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authorMartin Liska <mliska@suse.cz>2022-01-14 16:56:44 +0100
committerMartin Liska <mliska@suse.cz>2022-01-17 22:12:04 +0100
commit5c69acb32329d49e58c26fa41ae74229a52b9106 (patch)
treeddb05f9d73afb6f998457d2ac4b720e3b3b60483 /gcc/fortran/decl.cc
parent490e23032baaece71f2ec09fa1805064b150fbc2 (diff)
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Rename .c files to .cc files.
gcc/ada/ChangeLog: * adadecode.c: Moved to... * adadecode.cc: ...here. * affinity.c: Moved to... * affinity.cc: ...here. * argv-lynxos178-raven-cert.c: Moved to... * argv-lynxos178-raven-cert.cc: ...here. * argv.c: Moved to... * argv.cc: ...here. * aux-io.c: Moved to... * aux-io.cc: ...here. * cio.c: Moved to... * cio.cc: ...here. * cstreams.c: Moved to... * cstreams.cc: ...here. * env.c: Moved to... * env.cc: ...here. * exit.c: Moved to... * exit.cc: ...here. * expect.c: Moved to... * expect.cc: ...here. * final.c: Moved to... * final.cc: ...here. * gcc-interface/cuintp.c: Moved to... * gcc-interface/cuintp.cc: ...here. * gcc-interface/decl.c: Moved to... * gcc-interface/decl.cc: ...here. * gcc-interface/misc.c: Moved to... * gcc-interface/misc.cc: ...here. * gcc-interface/targtyps.c: Moved to... * gcc-interface/targtyps.cc: ...here. * gcc-interface/trans.c: Moved to... * gcc-interface/trans.cc: ...here. * gcc-interface/utils.c: Moved to... * gcc-interface/utils.cc: ...here. * gcc-interface/utils2.c: Moved to... * gcc-interface/utils2.cc: ...here. * init.c: Moved to... * init.cc: ...here. * initialize.c: Moved to... * initialize.cc: ...here. * libgnarl/thread.c: Moved to... * libgnarl/thread.cc: ...here. * link.c: Moved to... * link.cc: ...here. * locales.c: Moved to... * locales.cc: ...here. * mkdir.c: Moved to... * mkdir.cc: ...here. * raise.c: Moved to... * raise.cc: ...here. * rtfinal.c: Moved to... * rtfinal.cc: ...here. * rtinit.c: Moved to... * rtinit.cc: ...here. * seh_init.c: Moved to... * seh_init.cc: ...here. * sigtramp-armdroid.c: Moved to... * sigtramp-armdroid.cc: ...here. * sigtramp-ios.c: Moved to... * sigtramp-ios.cc: ...here. * sigtramp-qnx.c: Moved to... * sigtramp-qnx.cc: ...here. * sigtramp-vxworks.c: Moved to... * sigtramp-vxworks.cc: ...here. * socket.c: Moved to... * socket.cc: ...here. * tracebak.c: Moved to... * tracebak.cc: ...here. * version.c: Moved to... * version.cc: ...here. * vx_stack_info.c: Moved to... * vx_stack_info.cc: ...here. gcc/ChangeLog: * adjust-alignment.c: Moved to... * adjust-alignment.cc: ...here. * alias.c: Moved to... * alias.cc: ...here. * alloc-pool.c: Moved to... * alloc-pool.cc: ...here. * asan.c: Moved to... * asan.cc: ...here. * attribs.c: Moved to... * attribs.cc: ...here. * auto-inc-dec.c: Moved to... * auto-inc-dec.cc: ...here. * auto-profile.c: Moved to... * auto-profile.cc: ...here. * bb-reorder.c: Moved to... * bb-reorder.cc: ...here. * bitmap.c: Moved to... * bitmap.cc: ...here. * btfout.c: Moved to... * btfout.cc: ...here. * builtins.c: Moved to... * builtins.cc: ...here. * caller-save.c: Moved to... * caller-save.cc: ...here. * calls.c: Moved to... * calls.cc: ...here. * ccmp.c: Moved to... * ccmp.cc: ...here. * cfg.c: Moved to... * cfg.cc: ...here. * cfganal.c: Moved to... * cfganal.cc: ...here. * cfgbuild.c: Moved to... * cfgbuild.cc: ...here. * cfgcleanup.c: Moved to... * cfgcleanup.cc: ...here. * cfgexpand.c: Moved to... * cfgexpand.cc: ...here. * cfghooks.c: Moved to... * cfghooks.cc: ...here. * cfgloop.c: Moved to... * cfgloop.cc: ...here. * cfgloopanal.c: Moved to... * cfgloopanal.cc: ...here. * cfgloopmanip.c: Moved to... * cfgloopmanip.cc: ...here. * cfgrtl.c: Moved to... * cfgrtl.cc: ...here. * cgraph.c: Moved to... * cgraph.cc: ...here. * cgraphbuild.c: Moved to... * cgraphbuild.cc: ...here. * cgraphclones.c: Moved to... * cgraphclones.cc: ...here. * cgraphunit.c: Moved to... * cgraphunit.cc: ...here. * collect-utils.c: Moved to... * collect-utils.cc: ...here. * collect2-aix.c: Moved to... * collect2-aix.cc: ...here. * collect2.c: Moved to... * collect2.cc: ...here. * combine-stack-adj.c: Moved to... * combine-stack-adj.cc: ...here. * combine.c: Moved to... * combine.cc: ...here. * common/common-targhooks.c: Moved to... * common/common-targhooks.cc: ...here. * common/config/aarch64/aarch64-common.c: Moved to... * common/config/aarch64/aarch64-common.cc: ...here. * common/config/alpha/alpha-common.c: Moved to... * common/config/alpha/alpha-common.cc: ...here. * common/config/arc/arc-common.c: Moved to... * common/config/arc/arc-common.cc: ...here. * common/config/arm/arm-common.c: Moved to... * common/config/arm/arm-common.cc: ...here. * common/config/avr/avr-common.c: Moved to... * common/config/avr/avr-common.cc: ...here. * common/config/bfin/bfin-common.c: Moved to... * common/config/bfin/bfin-common.cc: ...here. * common/config/bpf/bpf-common.c: Moved to... * common/config/bpf/bpf-common.cc: ...here. * common/config/c6x/c6x-common.c: Moved to... * common/config/c6x/c6x-common.cc: ...here. * common/config/cr16/cr16-common.c: Moved to... * common/config/cr16/cr16-common.cc: ...here. * common/config/cris/cris-common.c: Moved to... * common/config/cris/cris-common.cc: ...here. * common/config/csky/csky-common.c: Moved to... * common/config/csky/csky-common.cc: ...here. * common/config/default-common.c: Moved to... * common/config/default-common.cc: ...here. * common/config/epiphany/epiphany-common.c: Moved to... * common/config/epiphany/epiphany-common.cc: ...here. * common/config/fr30/fr30-common.c: Moved to... * common/config/fr30/fr30-common.cc: ...here. * common/config/frv/frv-common.c: Moved to... * common/config/frv/frv-common.cc: ...here. * common/config/gcn/gcn-common.c: Moved to... * common/config/gcn/gcn-common.cc: ...here. * common/config/h8300/h8300-common.c: Moved to... * common/config/h8300/h8300-common.cc: ...here. * common/config/i386/i386-common.c: Moved to... * common/config/i386/i386-common.cc: ...here. * common/config/ia64/ia64-common.c: Moved to... * common/config/ia64/ia64-common.cc: ...here. * common/config/iq2000/iq2000-common.c: Moved to... * common/config/iq2000/iq2000-common.cc: ...here. * common/config/lm32/lm32-common.c: Moved to... * common/config/lm32/lm32-common.cc: ...here. * common/config/m32r/m32r-common.c: Moved to... * common/config/m32r/m32r-common.cc: ...here. * common/config/m68k/m68k-common.c: Moved to... * common/config/m68k/m68k-common.cc: ...here. * common/config/mcore/mcore-common.c: Moved to... * common/config/mcore/mcore-common.cc: ...here. * common/config/microblaze/microblaze-common.c: Moved to... * common/config/microblaze/microblaze-common.cc: ...here. * common/config/mips/mips-common.c: Moved to... * common/config/mips/mips-common.cc: ...here. * common/config/mmix/mmix-common.c: Moved to... * common/config/mmix/mmix-common.cc: ...here. * common/config/mn10300/mn10300-common.c: Moved to... * common/config/mn10300/mn10300-common.cc: ...here. * common/config/msp430/msp430-common.c: Moved to... * common/config/msp430/msp430-common.cc: ...here. * common/config/nds32/nds32-common.c: Moved to... * common/config/nds32/nds32-common.cc: ...here. * common/config/nios2/nios2-common.c: Moved to... * common/config/nios2/nios2-common.cc: ...here. * common/config/nvptx/nvptx-common.c: Moved to... * common/config/nvptx/nvptx-common.cc: ...here. * common/config/or1k/or1k-common.c: Moved to... * common/config/or1k/or1k-common.cc: ...here. * common/config/pa/pa-common.c: Moved to... * common/config/pa/pa-common.cc: ...here. * common/config/pdp11/pdp11-common.c: Moved to... * common/config/pdp11/pdp11-common.cc: ...here. * common/config/pru/pru-common.c: Moved to... * common/config/pru/pru-common.cc: ...here. * common/config/riscv/riscv-common.c: Moved to... * common/config/riscv/riscv-common.cc: ...here. * common/config/rs6000/rs6000-common.c: Moved to... * common/config/rs6000/rs6000-common.cc: ...here. * common/config/rx/rx-common.c: Moved to... * common/config/rx/rx-common.cc: ...here. * common/config/s390/s390-common.c: Moved to... * common/config/s390/s390-common.cc: ...here. * common/config/sh/sh-common.c: Moved to... * common/config/sh/sh-common.cc: ...here. * common/config/sparc/sparc-common.c: Moved to... * common/config/sparc/sparc-common.cc: ...here. * common/config/tilegx/tilegx-common.c: Moved to... * common/config/tilegx/tilegx-common.cc: ...here. * common/config/tilepro/tilepro-common.c: Moved to... * common/config/tilepro/tilepro-common.cc: ...here. * common/config/v850/v850-common.c: Moved to... * common/config/v850/v850-common.cc: ...here. * common/config/vax/vax-common.c: Moved to... * common/config/vax/vax-common.cc: ...here. * common/config/visium/visium-common.c: Moved to... * common/config/visium/visium-common.cc: ...here. * common/config/xstormy16/xstormy16-common.c: Moved to... * common/config/xstormy16/xstormy16-common.cc: ...here. * common/config/xtensa/xtensa-common.c: Moved to... * common/config/xtensa/xtensa-common.cc: ...here. * compare-elim.c: Moved to... * compare-elim.cc: ...here. * config/aarch64/aarch64-bti-insert.c: Moved to... * config/aarch64/aarch64-bti-insert.cc: ...here. * config/aarch64/aarch64-builtins.c: Moved to... * config/aarch64/aarch64-builtins.cc: ...here. * config/aarch64/aarch64-c.c: Moved to... * config/aarch64/aarch64-c.cc: ...here. * config/aarch64/aarch64-d.c: Moved to... * 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config/arm/arm-builtins.c: Moved to... * config/arm/arm-builtins.cc: ...here. * config/arm/arm-c.c: Moved to... * config/arm/arm-c.cc: ...here. * config/arm/arm-d.c: Moved to... * config/arm/arm-d.cc: ...here. * config/arm/arm.c: Moved to... * config/arm/arm.cc: ...here. * config/arm/driver-arm.c: Moved to... * config/arm/driver-arm.cc: ...here. * config/avr/avr-c.c: Moved to... * config/avr/avr-c.cc: ...here. * config/avr/avr-devices.c: Moved to... * config/avr/avr-devices.cc: ...here. * config/avr/avr-log.c: Moved to... * config/avr/avr-log.cc: ...here. * config/avr/avr.c: Moved to... * config/avr/avr.cc: ...here. * config/avr/driver-avr.c: Moved to... * config/avr/driver-avr.cc: ...here. * config/avr/gen-avr-mmcu-specs.c: Moved to... * config/avr/gen-avr-mmcu-specs.cc: ...here. * config/avr/gen-avr-mmcu-texi.c: Moved to... * config/avr/gen-avr-mmcu-texi.cc: ...here. * config/bfin/bfin.c: Moved to... * config/bfin/bfin.cc: ...here. * config/bpf/bpf.c: Moved to... * config/bpf/bpf.cc: ...here. * config/bpf/coreout.c: Moved to... * config/bpf/coreout.cc: ...here. * config/c6x/c6x.c: Moved to... * config/c6x/c6x.cc: ...here. * config/cr16/cr16.c: Moved to... * config/cr16/cr16.cc: ...here. * config/cris/cris.c: Moved to... * config/cris/cris.cc: ...here. * config/csky/csky.c: Moved to... * config/csky/csky.cc: ...here. * config/darwin-c.c: Moved to... * config/darwin-c.cc: ...here. * config/darwin-d.c: Moved to... * config/darwin-d.cc: ...here. * config/darwin-driver.c: Moved to... * config/darwin-driver.cc: ...here. * config/darwin-f.c: Moved to... * config/darwin-f.cc: ...here. * config/darwin.c: Moved to... * config/darwin.cc: ...here. * config/default-c.c: Moved to... * config/default-c.cc: ...here. * config/default-d.c: Moved to... * config/default-d.cc: ...here. * config/dragonfly-d.c: Moved to... * config/dragonfly-d.cc: ...here. * config/epiphany/epiphany.c: Moved to... * config/epiphany/epiphany.cc: ...here. * config/epiphany/mode-switch-use.c: Moved to... * config/epiphany/mode-switch-use.cc: ...here. * config/epiphany/resolve-sw-modes.c: Moved to... * config/epiphany/resolve-sw-modes.cc: ...here. * config/fr30/fr30.c: Moved to... * config/fr30/fr30.cc: ...here. * config/freebsd-d.c: Moved to... * config/freebsd-d.cc: ...here. * config/frv/frv.c: Moved to... * config/frv/frv.cc: ...here. * config/ft32/ft32.c: Moved to... * config/ft32/ft32.cc: ...here. * config/gcn/driver-gcn.c: Moved to... * config/gcn/driver-gcn.cc: ...here. * config/gcn/gcn-run.c: Moved to... * config/gcn/gcn-run.cc: ...here. * config/gcn/gcn-tree.c: Moved to... * config/gcn/gcn-tree.cc: ...here. * config/gcn/gcn.c: Moved to... * config/gcn/gcn.cc: ...here. * config/gcn/mkoffload.c: Moved to... * config/gcn/mkoffload.cc: ...here. * config/glibc-c.c: Moved to... * config/glibc-c.cc: ...here. * config/glibc-d.c: Moved to... * config/glibc-d.cc: ...here. * config/h8300/h8300.c: Moved to... * config/h8300/h8300.cc: ...here. * config/host-darwin.c: Moved to... * config/host-darwin.cc: ...here. * config/host-hpux.c: Moved to... * config/host-hpux.cc: ...here. * config/host-linux.c: Moved to... * config/host-linux.cc: ...here. * config/host-netbsd.c: Moved to... * config/host-netbsd.cc: ...here. * config/host-openbsd.c: Moved to... * config/host-openbsd.cc: ...here. * config/host-solaris.c: Moved to... * config/host-solaris.cc: ...here. * config/i386/djgpp.c: Moved to... * config/i386/djgpp.cc: ...here. * config/i386/driver-i386.c: Moved to... * config/i386/driver-i386.cc: ...here. * config/i386/driver-mingw32.c: Moved to... * config/i386/driver-mingw32.cc: ...here. * config/i386/gnu-property.c: Moved to... * config/i386/gnu-property.cc: ...here. * config/i386/host-cygwin.c: Moved to... * config/i386/host-cygwin.cc: ...here. * config/i386/host-i386-darwin.c: Moved to... * config/i386/host-i386-darwin.cc: ...here. * config/i386/host-mingw32.c: Moved to... * config/i386/host-mingw32.cc: ...here. * config/i386/i386-builtins.c: Moved to... * config/i386/i386-builtins.cc: ...here. * config/i386/i386-c.c: Moved to... * config/i386/i386-c.cc: ...here. * config/i386/i386-d.c: Moved to... * config/i386/i386-d.cc: ...here. * config/i386/i386-expand.c: Moved to... * config/i386/i386-expand.cc: ...here. * config/i386/i386-features.c: Moved to... * config/i386/i386-features.cc: ...here. * config/i386/i386-options.c: Moved to... * config/i386/i386-options.cc: ...here. * config/i386/i386.c: Moved to... * config/i386/i386.cc: ...here. * config/i386/intelmic-mkoffload.c: Moved to... * config/i386/intelmic-mkoffload.cc: ...here. * config/i386/msformat-c.c: Moved to... * config/i386/msformat-c.cc: ...here. * config/i386/winnt-cxx.c: Moved to... * config/i386/winnt-cxx.cc: ...here. * config/i386/winnt-d.c: Moved to... * config/i386/winnt-d.cc: ...here. * config/i386/winnt-stubs.c: Moved to... * config/i386/winnt-stubs.cc: ...here. * config/i386/winnt.c: Moved to... * config/i386/winnt.cc: ...here. * config/i386/x86-tune-sched-atom.c: 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config/msp430/msp430.c: Moved to... * config/msp430/msp430.cc: ...here. * config/nds32/nds32-cost.c: Moved to... * config/nds32/nds32-cost.cc: ...here. * config/nds32/nds32-fp-as-gp.c: Moved to... * config/nds32/nds32-fp-as-gp.cc: ...here. * config/nds32/nds32-intrinsic.c: Moved to... * config/nds32/nds32-intrinsic.cc: ...here. * config/nds32/nds32-isr.c: Moved to... * config/nds32/nds32-isr.cc: ...here. * config/nds32/nds32-md-auxiliary.c: Moved to... * config/nds32/nds32-md-auxiliary.cc: ...here. * config/nds32/nds32-memory-manipulation.c: Moved to... * config/nds32/nds32-memory-manipulation.cc: ...here. * config/nds32/nds32-pipelines-auxiliary.c: Moved to... * config/nds32/nds32-pipelines-auxiliary.cc: ...here. * config/nds32/nds32-predicates.c: Moved to... * config/nds32/nds32-predicates.cc: ...here. * config/nds32/nds32-relax-opt.c: Moved to... * config/nds32/nds32-relax-opt.cc: ...here. * config/nds32/nds32-utils.c: Moved to... * config/nds32/nds32-utils.cc: ...here. * config/nds32/nds32.c: Moved to... * config/nds32/nds32.cc: ...here. * config/netbsd-d.c: Moved to... * config/netbsd-d.cc: ...here. * config/netbsd.c: Moved to... * config/netbsd.cc: ...here. * config/nios2/nios2.c: Moved to... * config/nios2/nios2.cc: ...here. * config/nvptx/mkoffload.c: Moved to... * config/nvptx/mkoffload.cc: ...here. * config/nvptx/nvptx-c.c: Moved to... * config/nvptx/nvptx-c.cc: ...here. * config/nvptx/nvptx.c: Moved to... * config/nvptx/nvptx.cc: ...here. * config/openbsd-d.c: Moved to... * config/openbsd-d.cc: ...here. * config/or1k/or1k.c: Moved to... * config/or1k/or1k.cc: ...here. * config/pa/pa-d.c: Moved to... * config/pa/pa-d.cc: ...here. * config/pa/pa.c: Moved to... * config/pa/pa.cc: ...here. * config/pdp11/pdp11.c: Moved to... * config/pdp11/pdp11.cc: ...here. * config/pru/pru-passes.c: Moved to... * config/pru/pru-passes.cc: ...here. * config/pru/pru-pragma.c: Moved to... * config/pru/pru-pragma.cc: ...here. * config/pru/pru.c: Moved to... * config/pru/pru.cc: ...here. * config/riscv/riscv-builtins.c: Moved to... * config/riscv/riscv-builtins.cc: ...here. * config/riscv/riscv-c.c: Moved to... * config/riscv/riscv-c.cc: ...here. * config/riscv/riscv-d.c: Moved to... * config/riscv/riscv-d.cc: ...here. * config/riscv/riscv-shorten-memrefs.c: Moved to... * config/riscv/riscv-shorten-memrefs.cc: ...here. * config/riscv/riscv-sr.c: Moved to... * config/riscv/riscv-sr.cc: ...here. * config/riscv/riscv.c: Moved to... * config/riscv/riscv.cc: ...here. * config/rl78/rl78-c.c: Moved to... * config/rl78/rl78-c.cc: ...here. * config/rl78/rl78.c: Moved to... * config/rl78/rl78.cc: ...here. * config/rs6000/driver-rs6000.c: Moved to... * config/rs6000/driver-rs6000.cc: ...here. * config/rs6000/host-darwin.c: Moved to... * config/rs6000/host-darwin.cc: ...here. * config/rs6000/host-ppc64-darwin.c: Moved to... * config/rs6000/host-ppc64-darwin.cc: ...here. * config/rs6000/rbtree.c: Moved to... * config/rs6000/rbtree.cc: ...here. * config/rs6000/rs6000-c.c: Moved to... * config/rs6000/rs6000-c.cc: ...here. * config/rs6000/rs6000-call.c: Moved to... * config/rs6000/rs6000-call.cc: ...here. * config/rs6000/rs6000-d.c: Moved to... * config/rs6000/rs6000-d.cc: ...here. * config/rs6000/rs6000-gen-builtins.c: Moved to... * config/rs6000/rs6000-gen-builtins.cc: ...here. * config/rs6000/rs6000-linux.c: Moved to... * config/rs6000/rs6000-linux.cc: ...here. * config/rs6000/rs6000-logue.c: Moved to... * config/rs6000/rs6000-logue.cc: ...here. * config/rs6000/rs6000-p8swap.c: Moved to... * config/rs6000/rs6000-p8swap.cc: ...here. * config/rs6000/rs6000-pcrel-opt.c: Moved to... * config/rs6000/rs6000-pcrel-opt.cc: ...here. * config/rs6000/rs6000-string.c: Moved to... * config/rs6000/rs6000-string.cc: ...here. * config/rs6000/rs6000.c: Moved to... * config/rs6000/rs6000.cc: ...here. * config/rx/rx.c: Moved to... * config/rx/rx.cc: ...here. * config/s390/driver-native.c: Moved to... * config/s390/driver-native.cc: ...here. * config/s390/s390-c.c: Moved to... * config/s390/s390-c.cc: ...here. * config/s390/s390-d.c: Moved to... * config/s390/s390-d.cc: ...here. * config/s390/s390.c: Moved to... * config/s390/s390.cc: ...here. * config/sh/divtab-sh4-300.c: Moved to... * config/sh/divtab-sh4-300.cc: ...here. * config/sh/divtab-sh4.c: Moved to... * config/sh/divtab-sh4.cc: ...here. * config/sh/divtab.c: Moved to... * config/sh/divtab.cc: ...here. * config/sh/sh-c.c: Moved to... * config/sh/sh-c.cc: ...here. * config/sh/sh.c: Moved to... * config/sh/sh.cc: ...here. * config/sol2-c.c: Moved to... * config/sol2-c.cc: ...here. * config/sol2-cxx.c: Moved to... * config/sol2-cxx.cc: ...here. * config/sol2-d.c: Moved to... * config/sol2-d.cc: ...here. * config/sol2-stubs.c: Moved to... * config/sol2-stubs.cc: ...here. * config/sol2.c: Moved to... * config/sol2.cc: ...here. * config/sparc/driver-sparc.c: Moved to... * config/sparc/driver-sparc.cc: ...here. * config/sparc/sparc-c.c: Moved to... * config/sparc/sparc-c.cc: ...here. * config/sparc/sparc-d.c: Moved to... * config/sparc/sparc-d.cc: ...here. * config/sparc/sparc.c: Moved to... * config/sparc/sparc.cc: ...here. * config/stormy16/stormy16.c: Moved to... * config/stormy16/stormy16.cc: ...here. * config/tilegx/mul-tables.c: Moved to... * config/tilegx/mul-tables.cc: ...here. * config/tilegx/tilegx-c.c: Moved to... * config/tilegx/tilegx-c.cc: ...here. * config/tilegx/tilegx.c: Moved to... * config/tilegx/tilegx.cc: ...here. * config/tilepro/mul-tables.c: Moved to... * config/tilepro/mul-tables.cc: ...here. * config/tilepro/tilepro-c.c: Moved to... * config/tilepro/tilepro-c.cc: ...here. * config/tilepro/tilepro.c: Moved to... * config/tilepro/tilepro.cc: ...here. * config/v850/v850-c.c: Moved to... * config/v850/v850-c.cc: ...here. * config/v850/v850.c: Moved to... * config/v850/v850.cc: ...here. * config/vax/vax.c: Moved to... * config/vax/vax.cc: ...here. * config/visium/visium.c: Moved to... * config/visium/visium.cc: ...here. * config/vms/vms-c.c: Moved to... * config/vms/vms-c.cc: ...here. * config/vms/vms-f.c: Moved to... * config/vms/vms-f.cc: ...here. * config/vms/vms.c: Moved to... * config/vms/vms.cc: ...here. * config/vxworks-c.c: Moved to... * config/vxworks-c.cc: ...here. * config/vxworks.c: Moved to... * config/vxworks.cc: ...here. * config/winnt-c.c: Moved to... * config/winnt-c.cc: ...here. * config/xtensa/xtensa.c: Moved to... * config/xtensa/xtensa.cc: ...here. * context.c: Moved to... * context.cc: ...here. * convert.c: Moved to... * convert.cc: ...here. * coverage.c: Moved to... * coverage.cc: ...here. * cppbuiltin.c: Moved to... * cppbuiltin.cc: ...here. * cppdefault.c: Moved to... * cppdefault.cc: ...here. * cprop.c: Moved to... * cprop.cc: ...here. * cse.c: Moved to... * cse.cc: ...here. * cselib.c: Moved to... * cselib.cc: ...here. * ctfc.c: Moved to... * ctfc.cc: ...here. * ctfout.c: Moved to... * ctfout.cc: ...here. * data-streamer-in.c: Moved to... * data-streamer-in.cc: ...here. * data-streamer-out.c: Moved to... * data-streamer-out.cc: ...here. * data-streamer.c: Moved to... * data-streamer.cc: ...here. * dbgcnt.c: Moved to... * dbgcnt.cc: ...here. * dbxout.c: Moved to... * dbxout.cc: ...here. * dce.c: Moved to... * dce.cc: ...here. * ddg.c: Moved to... * ddg.cc: ...here. * debug.c: Moved to... * debug.cc: ...here. * df-core.c: Moved to... * df-core.cc: ...here. * df-problems.c: Moved to... * df-problems.cc: ...here. * df-scan.c: Moved to... * df-scan.cc: ...here. * dfp.c: Moved to... * dfp.cc: ...here. * diagnostic-color.c: Moved to... * diagnostic-color.cc: ...here. * diagnostic-show-locus.c: Moved to... * diagnostic-show-locus.cc: ...here. * diagnostic-spec.c: Moved to... * diagnostic-spec.cc: ...here. * diagnostic.c: Moved to... * diagnostic.cc: ...here. * dojump.c: Moved to... * dojump.cc: ...here. * dominance.c: Moved to... * dominance.cc: ...here. * domwalk.c: Moved to... * domwalk.cc: ...here. * double-int.c: Moved to... * double-int.cc: ...here. * dse.c: Moved to... * dse.cc: ...here. * dumpfile.c: Moved to... * dumpfile.cc: ...here. * dwarf2asm.c: Moved to... * dwarf2asm.cc: ...here. * dwarf2cfi.c: Moved to... * dwarf2cfi.cc: ...here. * dwarf2ctf.c: Moved to... * dwarf2ctf.cc: ...here. * dwarf2out.c: Moved to... * dwarf2out.cc: ...here. * early-remat.c: Moved to... * early-remat.cc: ...here. * edit-context.c: Moved to... * edit-context.cc: ...here. * emit-rtl.c: Moved to... * emit-rtl.cc: ...here. * errors.c: Moved to... * errors.cc: ...here. * et-forest.c: Moved to... * et-forest.cc: ...here. * except.c: Moved to... * except.cc: ...here. * explow.c: Moved to... * explow.cc: ...here. * expmed.c: Moved to... * expmed.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * fibonacci_heap.c: Moved to... * fibonacci_heap.cc: ...here. * file-find.c: Moved to... * file-find.cc: ...here. * file-prefix-map.c: Moved to... * file-prefix-map.cc: ...here. * final.c: Moved to... * final.cc: ...here. * fixed-value.c: Moved to... * fixed-value.cc: ...here. * fold-const-call.c: Moved to... * fold-const-call.cc: ...here. * fold-const.c: Moved to... * fold-const.cc: ...here. * fp-test.c: Moved to... * fp-test.cc: ...here. * function-tests.c: Moved to... * function-tests.cc: ...here. * function.c: Moved to... * function.cc: ...here. * fwprop.c: Moved to... * fwprop.cc: ...here. * gcc-ar.c: Moved to... * gcc-ar.cc: ...here. * gcc-main.c: Moved to... * gcc-main.cc: ...here. * gcc-rich-location.c: Moved to... * gcc-rich-location.cc: ...here. * gcc.c: Moved to... * gcc.cc: ...here. * gcov-dump.c: Moved to... * gcov-dump.cc: ...here. * gcov-io.c: Moved to... * gcov-io.cc: ...here. * gcov-tool.c: Moved to... * gcov-tool.cc: ...here. * gcov.c: Moved to... * gcov.cc: ...here. * gcse-common.c: Moved to... * gcse-common.cc: ...here. * gcse.c: Moved to... * gcse.cc: ...here. * genattr-common.c: Moved to... * genattr-common.cc: ...here. * genattr.c: Moved to... * genattr.cc: ...here. * genattrtab.c: Moved to... * genattrtab.cc: ...here. * genautomata.c: Moved to... * genautomata.cc: ...here. * gencfn-macros.c: Moved to... * gencfn-macros.cc: ...here. * gencheck.c: Moved to... * gencheck.cc: ...here. * genchecksum.c: Moved to... * genchecksum.cc: ...here. * gencodes.c: Moved to... * gencodes.cc: ...here. * genconditions.c: Moved to... * genconditions.cc: ...here. * genconfig.c: Moved to... * genconfig.cc: ...here. * genconstants.c: Moved to... * genconstants.cc: ...here. * genemit.c: Moved to... * genemit.cc: ...here. * genenums.c: Moved to... * genenums.cc: ...here. * generic-match-head.c: Moved to... * generic-match-head.cc: ...here. * genextract.c: Moved to... * genextract.cc: ...here. * genflags.c: Moved to... * genflags.cc: ...here. * gengenrtl.c: Moved to... * gengenrtl.cc: ...here. * gengtype-parse.c: Moved to... * gengtype-parse.cc: ...here. * gengtype-state.c: Moved to... * gengtype-state.cc: ...here. * gengtype.c: Moved to... * gengtype.cc: ...here. * genhooks.c: Moved to... * genhooks.cc: ...here. * genmatch.c: Moved to... * genmatch.cc: ...here. * genmddeps.c: Moved to... * genmddeps.cc: ...here. * genmddump.c: Moved to... * genmddump.cc: ...here. * genmodes.c: Moved to... * genmodes.cc: ...here. * genopinit.c: Moved to... * genopinit.cc: ...here. * genoutput.c: Moved to... * genoutput.cc: ...here. * genpeep.c: Moved to... * genpeep.cc: ...here. * genpreds.c: Moved to... * genpreds.cc: ...here. * genrecog.c: Moved to... * genrecog.cc: ...here. * gensupport.c: Moved to... * gensupport.cc: ...here. * gentarget-def.c: Moved to... * gentarget-def.cc: ...here. * genversion.c: Moved to... * genversion.cc: ...here. * ggc-common.c: Moved to... * ggc-common.cc: ...here. * ggc-none.c: Moved to... * ggc-none.cc: ...here. * ggc-page.c: Moved to... * ggc-page.cc: ...here. * ggc-tests.c: Moved to... * ggc-tests.cc: ...here. * gimple-builder.c: Moved to... * gimple-builder.cc: ...here. * gimple-expr.c: Moved to... * gimple-expr.cc: ...here. * gimple-fold.c: Moved to... * gimple-fold.cc: ...here. * gimple-iterator.c: Moved to... * gimple-iterator.cc: ...here. * gimple-laddress.c: Moved to... * gimple-laddress.cc: ...here. * gimple-loop-jam.c: Moved to... * gimple-loop-jam.cc: ...here. * gimple-low.c: Moved to... * gimple-low.cc: ...here. * gimple-match-head.c: Moved to... * gimple-match-head.cc: ...here. * gimple-pretty-print.c: Moved to... * gimple-pretty-print.cc: ...here. * gimple-ssa-backprop.c: Moved to... * gimple-ssa-backprop.cc: ...here. * gimple-ssa-evrp-analyze.c: Moved to... * gimple-ssa-evrp-analyze.cc: ...here. * gimple-ssa-evrp.c: Moved to... * gimple-ssa-evrp.cc: ...here. * gimple-ssa-isolate-paths.c: Moved to... * gimple-ssa-isolate-paths.cc: ...here. * gimple-ssa-nonnull-compare.c: Moved to... * gimple-ssa-nonnull-compare.cc: ...here. * gimple-ssa-split-paths.c: Moved to... * gimple-ssa-split-paths.cc: ...here. * gimple-ssa-sprintf.c: Moved to... * gimple-ssa-sprintf.cc: ...here. * gimple-ssa-store-merging.c: Moved to... * gimple-ssa-store-merging.cc: ...here. * gimple-ssa-strength-reduction.c: Moved to... * gimple-ssa-strength-reduction.cc: ...here. * gimple-ssa-warn-alloca.c: Moved to... * gimple-ssa-warn-alloca.cc: ...here. * gimple-ssa-warn-restrict.c: Moved to... * gimple-ssa-warn-restrict.cc: ...here. * gimple-streamer-in.c: Moved to... * gimple-streamer-in.cc: ...here. * gimple-streamer-out.c: Moved to... * gimple-streamer-out.cc: ...here. * gimple-walk.c: Moved to... * gimple-walk.cc: ...here. * gimple-warn-recursion.c: Moved to... * gimple-warn-recursion.cc: ...here. * gimple.c: Moved to... * gimple.cc: ...here. * gimplify-me.c: Moved to... * gimplify-me.cc: ...here. * gimplify.c: Moved to... * gimplify.cc: ...here. * godump.c: Moved to... * godump.cc: ...here. * graph.c: Moved to... * graph.cc: ...here. * graphds.c: Moved to... * graphds.cc: ...here. * graphite-dependences.c: Moved to... * graphite-dependences.cc: ...here. * graphite-isl-ast-to-gimple.c: Moved to... * graphite-isl-ast-to-gimple.cc: ...here. * graphite-optimize-isl.c: Moved to... * graphite-optimize-isl.cc: ...here. * graphite-poly.c: Moved to... * graphite-poly.cc: ...here. * graphite-scop-detection.c: Moved to... * graphite-scop-detection.cc: ...here. * graphite-sese-to-poly.c: Moved to... * graphite-sese-to-poly.cc: ...here. * graphite.c: Moved to... * graphite.cc: ...here. * haifa-sched.c: Moved to... * haifa-sched.cc: ...here. * hash-map-tests.c: Moved to... * hash-map-tests.cc: ...here. * hash-set-tests.c: Moved to... * hash-set-tests.cc: ...here. * hash-table.c: Moved to... * hash-table.cc: ...here. * hooks.c: Moved to... * hooks.cc: ...here. * host-default.c: Moved to... * host-default.cc: ...here. * hw-doloop.c: Moved to... * hw-doloop.cc: ...here. * hwint.c: Moved to... * hwint.cc: ...here. * ifcvt.c: Moved to... * ifcvt.cc: ...here. * inchash.c: Moved to... * inchash.cc: ...here. * incpath.c: Moved to... * incpath.cc: ...here. * init-regs.c: Moved to... * init-regs.cc: ...here. * input.c: Moved to... * input.cc: ...here. * internal-fn.c: Moved to... * internal-fn.cc: ...here. * intl.c: Moved to... * intl.cc: ...here. * ipa-comdats.c: Moved to... * ipa-comdats.cc: ...here. * ipa-cp.c: Moved to... * ipa-cp.cc: ...here. * ipa-devirt.c: Moved to... * ipa-devirt.cc: ...here. * ipa-fnsummary.c: Moved to... * ipa-fnsummary.cc: ...here. * ipa-icf-gimple.c: Moved to... * ipa-icf-gimple.cc: ...here. * ipa-icf.c: Moved to... * ipa-icf.cc: ...here. * ipa-inline-analysis.c: Moved to... * ipa-inline-analysis.cc: ...here. * ipa-inline-transform.c: Moved to... * ipa-inline-transform.cc: ...here. * ipa-inline.c: Moved to... * ipa-inline.cc: ...here. * ipa-modref-tree.c: Moved to... * ipa-modref-tree.cc: ...here. * ipa-modref.c: Moved to... * ipa-modref.cc: ...here. * ipa-param-manipulation.c: Moved to... * ipa-param-manipulation.cc: ...here. * ipa-polymorphic-call.c: Moved to... * ipa-polymorphic-call.cc: ...here. * ipa-predicate.c: Moved to... * ipa-predicate.cc: ...here. * ipa-profile.c: Moved to... * ipa-profile.cc: ...here. * ipa-prop.c: Moved to... * ipa-prop.cc: ...here. * ipa-pure-const.c: Moved to... * ipa-pure-const.cc: ...here. * ipa-ref.c: Moved to... * ipa-ref.cc: ...here. * ipa-reference.c: Moved to... * ipa-reference.cc: ...here. * ipa-split.c: Moved to... * ipa-split.cc: ...here. * ipa-sra.c: Moved to... * ipa-sra.cc: ...here. * ipa-utils.c: Moved to... * ipa-utils.cc: ...here. * ipa-visibility.c: Moved to... * ipa-visibility.cc: ...here. * ipa.c: Moved to... * ipa.cc: ...here. * ira-build.c: Moved to... * ira-build.cc: ...here. * ira-color.c: Moved to... * ira-color.cc: ...here. * ira-conflicts.c: Moved to... * ira-conflicts.cc: ...here. * ira-costs.c: Moved to... * ira-costs.cc: ...here. * ira-emit.c: Moved to... * ira-emit.cc: ...here. * ira-lives.c: Moved to... * ira-lives.cc: ...here. * ira.c: Moved to... * ira.cc: ...here. * jump.c: Moved to... * jump.cc: ...here. * langhooks.c: Moved to... * langhooks.cc: ...here. * lcm.c: Moved to... * lcm.cc: ...here. * lists.c: Moved to... * lists.cc: ...here. * loop-doloop.c: Moved to... * loop-doloop.cc: ...here. * loop-init.c: Moved to... * loop-init.cc: ...here. * loop-invariant.c: Moved to... * loop-invariant.cc: ...here. * loop-iv.c: Moved to... * loop-iv.cc: ...here. * loop-unroll.c: Moved to... * loop-unroll.cc: ...here. * lower-subreg.c: Moved to... * lower-subreg.cc: ...here. * lra-assigns.c: Moved to... * lra-assigns.cc: ...here. * lra-coalesce.c: Moved to... * lra-coalesce.cc: ...here. * lra-constraints.c: Moved to... * lra-constraints.cc: ...here. * lra-eliminations.c: Moved to... * lra-eliminations.cc: ...here. * lra-lives.c: Moved to... * lra-lives.cc: ...here. * lra-remat.c: Moved to... * lra-remat.cc: ...here. * lra-spills.c: Moved to... * lra-spills.cc: ...here. * lra.c: Moved to... * lra.cc: ...here. * lto-cgraph.c: Moved to... * lto-cgraph.cc: ...here. * lto-compress.c: Moved to... * lto-compress.cc: ...here. * lto-opts.c: Moved to... * lto-opts.cc: ...here. * lto-section-in.c: Moved to... * lto-section-in.cc: ...here. * lto-section-out.c: Moved to... * lto-section-out.cc: ...here. * lto-streamer-in.c: Moved to... * lto-streamer-in.cc: ...here. * lto-streamer-out.c: Moved to... * lto-streamer-out.cc: ...here. * lto-streamer.c: Moved to... * lto-streamer.cc: ...here. * lto-wrapper.c: Moved to... * lto-wrapper.cc: ...here. * main.c: Moved to... * main.cc: ...here. * mcf.c: Moved to... * mcf.cc: ...here. * mode-switching.c: Moved to... * mode-switching.cc: ...here. * modulo-sched.c: Moved to... * modulo-sched.cc: ...here. * multiple_target.c: Moved to... * multiple_target.cc: ...here. * omp-expand.c: Moved to... * omp-expand.cc: ...here. * omp-general.c: Moved to... * omp-general.cc: ...here. * omp-low.c: Moved to... * omp-low.cc: ...here. * omp-offload.c: Moved to... * omp-offload.cc: ...here. * omp-simd-clone.c: Moved to... * omp-simd-clone.cc: ...here. * opt-suggestions.c: Moved to... * opt-suggestions.cc: ...here. * optabs-libfuncs.c: Moved to... * optabs-libfuncs.cc: ...here. * optabs-query.c: Moved to... * optabs-query.cc: ...here. * optabs-tree.c: Moved to... * optabs-tree.cc: ...here. * optabs.c: Moved to... * optabs.cc: ...here. * opts-common.c: Moved to... * opts-common.cc: ...here. * opts-global.c: Moved to... * opts-global.cc: ...here. * opts.c: Moved to... * opts.cc: ...here. * passes.c: Moved to... * passes.cc: ...here. * plugin.c: Moved to... * plugin.cc: ...here. * postreload-gcse.c: Moved to... * postreload-gcse.cc: ...here. * postreload.c: Moved to... * postreload.cc: ...here. * predict.c: Moved to... * predict.cc: ...here. * prefix.c: Moved to... * prefix.cc: ...here. * pretty-print.c: Moved to... * pretty-print.cc: ...here. * print-rtl-function.c: Moved to... * print-rtl-function.cc: ...here. * print-rtl.c: Moved to... * print-rtl.cc: ...here. * print-tree.c: Moved to... * print-tree.cc: ...here. * profile-count.c: Moved to... * profile-count.cc: ...here. * profile.c: Moved to... * profile.cc: ...here. * read-md.c: Moved to... * read-md.cc: ...here. * read-rtl-function.c: Moved to... * read-rtl-function.cc: ...here. * read-rtl.c: Moved to... * read-rtl.cc: ...here. * real.c: Moved to... * real.cc: ...here. * realmpfr.c: Moved to... * realmpfr.cc: ...here. * recog.c: Moved to... * recog.cc: ...here. * ree.c: Moved to... * ree.cc: ...here. * reg-stack.c: Moved to... * reg-stack.cc: ...here. * regcprop.c: Moved to... * regcprop.cc: ...here. * reginfo.c: Moved to... * reginfo.cc: ...here. * regrename.c: Moved to... * regrename.cc: ...here. * regstat.c: Moved to... * regstat.cc: ...here. * reload.c: Moved to... * reload.cc: ...here. * reload1.c: Moved to... * reload1.cc: ...here. * reorg.c: Moved to... * reorg.cc: ...here. * resource.c: Moved to... * resource.cc: ...here. * rtl-error.c: Moved to... * rtl-error.cc: ...here. * rtl-tests.c: Moved to... * rtl-tests.cc: ...here. * rtl.c: Moved to... * rtl.cc: ...here. * rtlanal.c: Moved to... * rtlanal.cc: ...here. * rtlhash.c: Moved to... * rtlhash.cc: ...here. * rtlhooks.c: Moved to... * rtlhooks.cc: ...here. * rtx-vector-builder.c: Moved to... * rtx-vector-builder.cc: ...here. * run-rtl-passes.c: Moved to... * run-rtl-passes.cc: ...here. * sancov.c: Moved to... * sancov.cc: ...here. * sanopt.c: Moved to... * sanopt.cc: ...here. * sbitmap.c: Moved to... * sbitmap.cc: ...here. * sched-deps.c: Moved to... * sched-deps.cc: ...here. * sched-ebb.c: Moved to... * sched-ebb.cc: ...here. * sched-rgn.c: Moved to... * sched-rgn.cc: ...here. * sel-sched-dump.c: Moved to... * sel-sched-dump.cc: ...here. * sel-sched-ir.c: Moved to... * sel-sched-ir.cc: ...here. * sel-sched.c: Moved to... * sel-sched.cc: ...here. * selftest-diagnostic.c: Moved to... * selftest-diagnostic.cc: ...here. * selftest-rtl.c: Moved to... * selftest-rtl.cc: ...here. * selftest-run-tests.c: Moved to... * selftest-run-tests.cc: ...here. * selftest.c: Moved to... * selftest.cc: ...here. * sese.c: Moved to... * sese.cc: ...here. * shrink-wrap.c: Moved to... * shrink-wrap.cc: ...here. * simplify-rtx.c: Moved to... * simplify-rtx.cc: ...here. * sparseset.c: Moved to... * sparseset.cc: ...here. * spellcheck-tree.c: Moved to... * spellcheck-tree.cc: ...here. * spellcheck.c: Moved to... * spellcheck.cc: ...here. * sreal.c: Moved to... * sreal.cc: ...here. * stack-ptr-mod.c: Moved to... * stack-ptr-mod.cc: ...here. * statistics.c: Moved to... * statistics.cc: ...here. * stmt.c: Moved to... * stmt.cc: ...here. * stor-layout.c: Moved to... * stor-layout.cc: ...here. * store-motion.c: Moved to... * store-motion.cc: ...here. * streamer-hooks.c: Moved to... * streamer-hooks.cc: ...here. * stringpool.c: Moved to... * stringpool.cc: ...here. * substring-locations.c: Moved to... * substring-locations.cc: ...here. * symtab.c: Moved to... * symtab.cc: ...here. * target-globals.c: Moved to... * target-globals.cc: ...here. * targhooks.c: Moved to... * targhooks.cc: ...here. * timevar.c: Moved to... * timevar.cc: ...here. * toplev.c: Moved to... * toplev.cc: ...here. * tracer.c: Moved to... * tracer.cc: ...here. * trans-mem.c: Moved to... * trans-mem.cc: ...here. * tree-affine.c: Moved to... * tree-affine.cc: ...here. * tree-call-cdce.c: Moved to... * tree-call-cdce.cc: ...here. * tree-cfg.c: Moved to... * tree-cfg.cc: ...here. * tree-cfgcleanup.c: Moved to... * tree-cfgcleanup.cc: ...here. * tree-chrec.c: Moved to... * tree-chrec.cc: ...here. * tree-complex.c: Moved to... * tree-complex.cc: ...here. * tree-data-ref.c: Moved to... * tree-data-ref.cc: ...here. * tree-dfa.c: Moved to... * tree-dfa.cc: ...here. * tree-diagnostic.c: Moved to... * tree-diagnostic.cc: ...here. * tree-dump.c: Moved to... * tree-dump.cc: ...here. * tree-eh.c: Moved to... * tree-eh.cc: ...here. * tree-emutls.c: Moved to... * tree-emutls.cc: ...here. * tree-if-conv.c: Moved to... * tree-if-conv.cc: ...here. * tree-inline.c: Moved to... * tree-inline.cc: ...here. * tree-into-ssa.c: Moved to... * tree-into-ssa.cc: ...here. * tree-iterator.c: Moved to... * tree-iterator.cc: ...here. * tree-loop-distribution.c: Moved to... * tree-loop-distribution.cc: ...here. * tree-nested.c: Moved to... * tree-nested.cc: ...here. * tree-nrv.c: Moved to... * tree-nrv.cc: ...here. * tree-object-size.c: Moved to... * tree-object-size.cc: ...here. * tree-outof-ssa.c: Moved to... * tree-outof-ssa.cc: ...here. * tree-parloops.c: Moved to... * tree-parloops.cc: ...here. * tree-phinodes.c: Moved to... * tree-phinodes.cc: ...here. * tree-predcom.c: Moved to... * tree-predcom.cc: ...here. * tree-pretty-print.c: Moved to... * tree-pretty-print.cc: ...here. * tree-profile.c: Moved to... * tree-profile.cc: ...here. * tree-scalar-evolution.c: Moved to... * tree-scalar-evolution.cc: ...here. * tree-sra.c: Moved to... * tree-sra.cc: ...here. * tree-ssa-address.c: Moved to... * tree-ssa-address.cc: ...here. * tree-ssa-alias.c: Moved to... * tree-ssa-alias.cc: ...here. * tree-ssa-ccp.c: Moved to... * tree-ssa-ccp.cc: ...here. * tree-ssa-coalesce.c: Moved to... * tree-ssa-coalesce.cc: ...here. * tree-ssa-copy.c: Moved to... * tree-ssa-copy.cc: ...here. * tree-ssa-dce.c: Moved to... * tree-ssa-dce.cc: ...here. * tree-ssa-dom.c: Moved to... * tree-ssa-dom.cc: ...here. * tree-ssa-dse.c: Moved to... * tree-ssa-dse.cc: ...here. * tree-ssa-forwprop.c: Moved to... * tree-ssa-forwprop.cc: ...here. * tree-ssa-ifcombine.c: Moved to... * tree-ssa-ifcombine.cc: ...here. * tree-ssa-live.c: Moved to... * tree-ssa-live.cc: ...here. * tree-ssa-loop-ch.c: Moved to... * tree-ssa-loop-ch.cc: ...here. * tree-ssa-loop-im.c: Moved to... * tree-ssa-loop-im.cc: ...here. * tree-ssa-loop-ivcanon.c: Moved to... * tree-ssa-loop-ivcanon.cc: ...here. * tree-ssa-loop-ivopts.c: Moved to... * tree-ssa-loop-ivopts.cc: ...here. * tree-ssa-loop-manip.c: Moved to... * tree-ssa-loop-manip.cc: ...here. * tree-ssa-loop-niter.c: Moved to... * tree-ssa-loop-niter.cc: ...here. * tree-ssa-loop-prefetch.c: Moved to... * tree-ssa-loop-prefetch.cc: ...here. * tree-ssa-loop-split.c: Moved to... * tree-ssa-loop-split.cc: ...here. * tree-ssa-loop-unswitch.c: Moved to... * tree-ssa-loop-unswitch.cc: ...here. * tree-ssa-loop.c: Moved to... * tree-ssa-loop.cc: ...here. * tree-ssa-math-opts.c: Moved to... * tree-ssa-math-opts.cc: ...here. * tree-ssa-operands.c: Moved to... * tree-ssa-operands.cc: ...here. * tree-ssa-phiopt.c: Moved to... * tree-ssa-phiopt.cc: ...here. * tree-ssa-phiprop.c: Moved to... * tree-ssa-phiprop.cc: ...here. * tree-ssa-pre.c: Moved to... * tree-ssa-pre.cc: ...here. * tree-ssa-propagate.c: Moved to... * tree-ssa-propagate.cc: ...here. * tree-ssa-reassoc.c: Moved to... * tree-ssa-reassoc.cc: ...here. * tree-ssa-sccvn.c: Moved to... * tree-ssa-sccvn.cc: ...here. * tree-ssa-scopedtables.c: Moved to... * tree-ssa-scopedtables.cc: ...here. * tree-ssa-sink.c: Moved to... * tree-ssa-sink.cc: ...here. * tree-ssa-strlen.c: Moved to... * tree-ssa-strlen.cc: ...here. * tree-ssa-structalias.c: Moved to... * tree-ssa-structalias.cc: ...here. * tree-ssa-tail-merge.c: Moved to... * tree-ssa-tail-merge.cc: ...here. * tree-ssa-ter.c: Moved to... * tree-ssa-ter.cc: ...here. * tree-ssa-threadbackward.c: Moved to... * tree-ssa-threadbackward.cc: ...here. * tree-ssa-threadedge.c: Moved to... * tree-ssa-threadedge.cc: ...here. * tree-ssa-threadupdate.c: Moved to... * tree-ssa-threadupdate.cc: ...here. * tree-ssa-uncprop.c: Moved to... * tree-ssa-uncprop.cc: ...here. * tree-ssa-uninit.c: Moved to... * tree-ssa-uninit.cc: ...here. * tree-ssa.c: Moved to... * tree-ssa.cc: ...here. * tree-ssanames.c: Moved to... * tree-ssanames.cc: ...here. * tree-stdarg.c: Moved to... * tree-stdarg.cc: ...here. * tree-streamer-in.c: Moved to... * tree-streamer-in.cc: ...here. * tree-streamer-out.c: Moved to... * tree-streamer-out.cc: ...here. * tree-streamer.c: Moved to... * tree-streamer.cc: ...here. * tree-switch-conversion.c: Moved to... * tree-switch-conversion.cc: ...here. * tree-tailcall.c: Moved to... * tree-tailcall.cc: ...here. * tree-vect-data-refs.c: Moved to... * tree-vect-data-refs.cc: ...here. * tree-vect-generic.c: Moved to... * tree-vect-generic.cc: ...here. * tree-vect-loop-manip.c: Moved to... * tree-vect-loop-manip.cc: ...here. * tree-vect-loop.c: Moved to... * tree-vect-loop.cc: ...here. * tree-vect-patterns.c: Moved to... * tree-vect-patterns.cc: ...here. * tree-vect-slp-patterns.c: Moved to... * tree-vect-slp-patterns.cc: ...here. * tree-vect-slp.c: Moved to... * tree-vect-slp.cc: ...here. * tree-vect-stmts.c: Moved to... * tree-vect-stmts.cc: ...here. * tree-vector-builder.c: Moved to... * tree-vector-builder.cc: ...here. * tree-vectorizer.c: Moved to... * tree-vectorizer.cc: ...here. * tree-vrp.c: Moved to... * tree-vrp.cc: ...here. * tree.c: Moved to... * tree.cc: ...here. * tsan.c: Moved to... * tsan.cc: ...here. * typed-splay-tree.c: Moved to... * typed-splay-tree.cc: ...here. * ubsan.c: Moved to... * ubsan.cc: ...here. * valtrack.c: Moved to... * valtrack.cc: ...here. * value-prof.c: Moved to... * value-prof.cc: ...here. * var-tracking.c: Moved to... * var-tracking.cc: ...here. * varasm.c: Moved to... * varasm.cc: ...here. * varpool.c: Moved to... * varpool.cc: ...here. * vec-perm-indices.c: Moved to... * vec-perm-indices.cc: ...here. * vec.c: Moved to... * vec.cc: ...here. * vmsdbgout.c: Moved to... * vmsdbgout.cc: ...here. * vr-values.c: Moved to... * vr-values.cc: ...here. * vtable-verify.c: Moved to... * vtable-verify.cc: ...here. * web.c: Moved to... * web.cc: ...here. * xcoffout.c: Moved to... * xcoffout.cc: ...here. gcc/c-family/ChangeLog: * c-ada-spec.c: Moved to... * c-ada-spec.cc: ...here. * c-attribs.c: Moved to... * c-attribs.cc: ...here. * c-common.c: Moved to... * c-common.cc: ...here. * c-cppbuiltin.c: Moved to... * c-cppbuiltin.cc: ...here. * c-dump.c: Moved to... * c-dump.cc: ...here. * c-format.c: Moved to... * c-format.cc: ...here. * c-gimplify.c: Moved to... * c-gimplify.cc: ...here. * c-indentation.c: Moved to... * c-indentation.cc: ...here. * c-lex.c: Moved to... * c-lex.cc: ...here. * c-omp.c: Moved to... * c-omp.cc: ...here. * c-opts.c: Moved to... * c-opts.cc: ...here. * c-pch.c: Moved to... * c-pch.cc: ...here. * c-ppoutput.c: Moved to... * c-ppoutput.cc: ...here. * c-pragma.c: Moved to... * c-pragma.cc: ...here. * c-pretty-print.c: Moved to... * c-pretty-print.cc: ...here. * c-semantics.c: Moved to... * c-semantics.cc: ...here. * c-ubsan.c: Moved to... * c-ubsan.cc: ...here. * c-warn.c: Moved to... * c-warn.cc: ...here. * cppspec.c: Moved to... * cppspec.cc: ...here. * stub-objc.c: Moved to... * stub-objc.cc: ...here. gcc/c/ChangeLog: * c-aux-info.c: Moved to... * c-aux-info.cc: ...here. * c-convert.c: Moved to... * c-convert.cc: ...here. * c-decl.c: Moved to... * c-decl.cc: ...here. * c-errors.c: Moved to... * c-errors.cc: ...here. * c-fold.c: Moved to... * c-fold.cc: ...here. * c-lang.c: Moved to... * c-lang.cc: ...here. * c-objc-common.c: Moved to... * c-objc-common.cc: ...here. * c-parser.c: Moved to... * c-parser.cc: ...here. * c-typeck.c: Moved to... * c-typeck.cc: ...here. * gccspec.c: Moved to... * gccspec.cc: ...here. * gimple-parser.c: Moved to... * gimple-parser.cc: ...here. gcc/cp/ChangeLog: * call.c: Moved to... * call.cc: ...here. * class.c: Moved to... * class.cc: ...here. * constexpr.c: Moved to... * constexpr.cc: ...here. * cp-gimplify.c: Moved to... * cp-gimplify.cc: ...here. * cp-lang.c: Moved to... * cp-lang.cc: ...here. * cp-objcp-common.c: Moved to... * cp-objcp-common.cc: ...here. * cp-ubsan.c: Moved to... * cp-ubsan.cc: ...here. * cvt.c: Moved to... * cvt.cc: ...here. * cxx-pretty-print.c: Moved to... * cxx-pretty-print.cc: ...here. * decl.c: Moved to... * decl.cc: ...here. * decl2.c: Moved to... * decl2.cc: ...here. * dump.c: Moved to... * dump.cc: ...here. * error.c: Moved to... * error.cc: ...here. * except.c: Moved to... * except.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * friend.c: Moved to... * friend.cc: ...here. * g++spec.c: Moved to... * g++spec.cc: ...here. * init.c: Moved to... * init.cc: ...here. * lambda.c: Moved to... * lambda.cc: ...here. * lex.c: Moved to... * lex.cc: ...here. * mangle.c: Moved to... * mangle.cc: ...here. * method.c: Moved to... * method.cc: ...here. * name-lookup.c: Moved to... * name-lookup.cc: ...here. * optimize.c: Moved to... * optimize.cc: ...here. * parser.c: Moved to... * parser.cc: ...here. * pt.c: Moved to... * pt.cc: ...here. * ptree.c: Moved to... * ptree.cc: ...here. * rtti.c: Moved to... * rtti.cc: ...here. * search.c: Moved to... * search.cc: ...here. * semantics.c: Moved to... * semantics.cc: ...here. * tree.c: Moved to... * tree.cc: ...here. * typeck.c: Moved to... * typeck.cc: ...here. * typeck2.c: Moved to... * typeck2.cc: ...here. * vtable-class-hierarchy.c: Moved to... * vtable-class-hierarchy.cc: ...here. gcc/fortran/ChangeLog: * arith.c: Moved to... * arith.cc: ...here. * array.c: Moved to... * array.cc: ...here. * bbt.c: Moved to... * bbt.cc: ...here. * check.c: Moved to... * check.cc: ...here. * class.c: Moved to... * class.cc: ...here. * constructor.c: Moved to... * constructor.cc: ...here. * convert.c: Moved to... * convert.cc: ...here. * cpp.c: Moved to... * cpp.cc: ...here. * data.c: Moved to... * data.cc: ...here. * decl.c: Moved to... * decl.cc: ...here. * dependency.c: Moved to... * dependency.cc: ...here. * dump-parse-tree.c: Moved to... * dump-parse-tree.cc: ...here. * error.c: Moved to... * error.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * f95-lang.c: Moved to... * f95-lang.cc: ...here. * frontend-passes.c: Moved to... * frontend-passes.cc: ...here. * gfortranspec.c: Moved to... * gfortranspec.cc: ...here. * interface.c: Moved to... * interface.cc: ...here. * intrinsic.c: Moved to... * intrinsic.cc: ...here. * io.c: Moved to... * io.cc: ...here. * iresolve.c: Moved to... * iresolve.cc: ...here. * match.c: Moved to... * match.cc: ...here. * matchexp.c: Moved to... * matchexp.cc: ...here. * misc.c: Moved to... * misc.cc: ...here. * module.c: Moved to... * module.cc: ...here. * openmp.c: Moved to... * openmp.cc: ...here. * options.c: Moved to... * options.cc: ...here. * parse.c: Moved to... * parse.cc: ...here. * primary.c: Moved to... * primary.cc: ...here. * resolve.c: Moved to... * resolve.cc: ...here. * scanner.c: Moved to... * scanner.cc: ...here. * simplify.c: Moved to... * simplify.cc: ...here. * st.c: Moved to... * st.cc: ...here. * symbol.c: Moved to... * symbol.cc: ...here. * target-memory.c: Moved to... * target-memory.cc: ...here. * trans-array.c: Moved to... * trans-array.cc: ...here. * trans-common.c: Moved to... * trans-common.cc: ...here. * trans-const.c: Moved to... * trans-const.cc: ...here. * trans-decl.c: Moved to... * trans-decl.cc: ...here. * trans-expr.c: Moved to... * trans-expr.cc: ...here. * trans-intrinsic.c: Moved to... * trans-intrinsic.cc: ...here. * trans-io.c: Moved to... * trans-io.cc: ...here. * trans-openmp.c: Moved to... * trans-openmp.cc: ...here. * trans-stmt.c: Moved to... * trans-stmt.cc: ...here. * trans-types.c: Moved to... * trans-types.cc: ...here. * trans.c: Moved to... * trans.cc: ...here. gcc/go/ChangeLog: * go-backend.c: Moved to... * go-backend.cc: ...here. * go-lang.c: Moved to... * go-lang.cc: ...here. * gospec.c: Moved to... * gospec.cc: ...here. gcc/jit/ChangeLog: * dummy-frontend.c: Moved to... * dummy-frontend.cc: ...here. * jit-builtins.c: Moved to... * jit-builtins.cc: ...here. * jit-logging.c: Moved to... * jit-logging.cc: ...here. * jit-playback.c: Moved to... * jit-playback.cc: ...here. * jit-recording.c: Moved to... * jit-recording.cc: ...here. * jit-result.c: Moved to... * jit-result.cc: ...here. * jit-spec.c: Moved to... * jit-spec.cc: ...here. * jit-tempdir.c: Moved to... * jit-tempdir.cc: ...here. * jit-w32.c: Moved to... * jit-w32.cc: ...here. * libgccjit.c: Moved to... * libgccjit.cc: ...here. gcc/lto/ChangeLog: * common.c: Moved to... * common.cc: ...here. * lto-common.c: Moved to... * lto-common.cc: ...here. * lto-dump.c: Moved to... * lto-dump.cc: ...here. * lto-lang.c: Moved to... * lto-lang.cc: ...here. * lto-object.c: Moved to... * lto-object.cc: ...here. * lto-partition.c: Moved to... * lto-partition.cc: ...here. * lto-symtab.c: Moved to... * lto-symtab.cc: ...here. * lto.c: Moved to... * lto.cc: ...here. gcc/objc/ChangeLog: * objc-act.c: Moved to... * objc-act.cc: ...here. * objc-encoding.c: Moved to... * objc-encoding.cc: ...here. * objc-gnu-runtime-abi-01.c: Moved to... * objc-gnu-runtime-abi-01.cc: ...here. * objc-lang.c: Moved to... * objc-lang.cc: ...here. * objc-map.c: Moved to... * objc-map.cc: ...here. * objc-next-runtime-abi-01.c: Moved to... * objc-next-runtime-abi-01.cc: ...here. * objc-next-runtime-abi-02.c: Moved to... * objc-next-runtime-abi-02.cc: ...here. * objc-runtime-shared-support.c: Moved to... * objc-runtime-shared-support.cc: ...here. gcc/objcp/ChangeLog: * objcp-decl.c: Moved to... * objcp-decl.cc: ...here. * objcp-lang.c: Moved to... * objcp-lang.cc: ...here. libcpp/ChangeLog: * charset.c: Moved to... * charset.cc: ...here. * directives.c: Moved to... * directives.cc: ...here. * errors.c: Moved to... * errors.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * files.c: Moved to... * files.cc: ...here. * identifiers.c: Moved to... * identifiers.cc: ...here. * init.c: Moved to... * init.cc: ...here. * lex.c: Moved to... * lex.cc: ...here. * line-map.c: Moved to... * line-map.cc: ...here. * macro.c: Moved to... * macro.cc: ...here. * makeucnid.c: Moved to... * makeucnid.cc: ...here. * mkdeps.c: Moved to... * mkdeps.cc: ...here. * pch.c: Moved to... * pch.cc: ...here. * symtab.c: Moved to... * symtab.cc: ...here. * traditional.c: Moved to... * traditional.cc: ...here.
Diffstat (limited to 'gcc/fortran/decl.cc')
-rw-r--r--gcc/fortran/decl.cc11910
1 files changed, 11910 insertions, 0 deletions
diff --git a/gcc/fortran/decl.cc b/gcc/fortran/decl.cc
new file mode 100644
index 0000000..c846923
--- /dev/null
+++ b/gcc/fortran/decl.cc
@@ -0,0 +1,11910 @@
+/* Declaration statement matcher
+ Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ Contributed by Andy Vaught
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "options.h"
+#include "tree.h"
+#include "gfortran.h"
+#include "stringpool.h"
+#include "match.h"
+#include "parse.h"
+#include "constructor.h"
+#include "target.h"
+
+/* Macros to access allocate memory for gfc_data_variable,
+ gfc_data_value and gfc_data. */
+#define gfc_get_data_variable() XCNEW (gfc_data_variable)
+#define gfc_get_data_value() XCNEW (gfc_data_value)
+#define gfc_get_data() XCNEW (gfc_data)
+
+
+static bool set_binding_label (const char **, const char *, int);
+
+
+/* This flag is set if an old-style length selector is matched
+ during a type-declaration statement. */
+
+static int old_char_selector;
+
+/* When variables acquire types and attributes from a declaration
+ statement, they get them from the following static variables. The
+ first part of a declaration sets these variables and the second
+ part copies these into symbol structures. */
+
+static gfc_typespec current_ts;
+
+static symbol_attribute current_attr;
+static gfc_array_spec *current_as;
+static int colon_seen;
+static int attr_seen;
+
+/* The current binding label (if any). */
+static const char* curr_binding_label;
+/* Need to know how many identifiers are on the current data declaration
+ line in case we're given the BIND(C) attribute with a NAME= specifier. */
+static int num_idents_on_line;
+/* Need to know if a NAME= specifier was found during gfc_match_bind_c so we
+ can supply a name if the curr_binding_label is nil and NAME= was not. */
+static int has_name_equals = 0;
+
+/* Initializer of the previous enumerator. */
+
+static gfc_expr *last_initializer;
+
+/* History of all the enumerators is maintained, so that
+ kind values of all the enumerators could be updated depending
+ upon the maximum initialized value. */
+
+typedef struct enumerator_history
+{
+ gfc_symbol *sym;
+ gfc_expr *initializer;
+ struct enumerator_history *next;
+}
+enumerator_history;
+
+/* Header of enum history chain. */
+
+static enumerator_history *enum_history = NULL;
+
+/* Pointer of enum history node containing largest initializer. */
+
+static enumerator_history *max_enum = NULL;
+
+/* gfc_new_block points to the symbol of a newly matched block. */
+
+gfc_symbol *gfc_new_block;
+
+bool gfc_matching_function;
+
+/* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */
+int directive_unroll = -1;
+
+/* Set upon parsing supported !GCC$ pragmas for use in the next loop. */
+bool directive_ivdep = false;
+bool directive_vector = false;
+bool directive_novector = false;
+
+/* Map of middle-end built-ins that should be vectorized. */
+hash_map<nofree_string_hash, int> *gfc_vectorized_builtins;
+
+/* If a kind expression of a component of a parameterized derived type is
+ parameterized, temporarily store the expression here. */
+static gfc_expr *saved_kind_expr = NULL;
+
+/* Used to store the parameter list arising in a PDT declaration and
+ in the typespec of a PDT variable or component. */
+static gfc_actual_arglist *decl_type_param_list;
+static gfc_actual_arglist *type_param_spec_list;
+
+/********************* DATA statement subroutines *********************/
+
+static bool in_match_data = false;
+
+bool
+gfc_in_match_data (void)
+{
+ return in_match_data;
+}
+
+static void
+set_in_match_data (bool set_value)
+{
+ in_match_data = set_value;
+}
+
+/* Free a gfc_data_variable structure and everything beneath it. */
+
+static void
+free_variable (gfc_data_variable *p)
+{
+ gfc_data_variable *q;
+
+ for (; p; p = q)
+ {
+ q = p->next;
+ gfc_free_expr (p->expr);
+ gfc_free_iterator (&p->iter, 0);
+ free_variable (p->list);
+ free (p);
+ }
+}
+
+
+/* Free a gfc_data_value structure and everything beneath it. */
+
+static void
+free_value (gfc_data_value *p)
+{
+ gfc_data_value *q;
+
+ for (; p; p = q)
+ {
+ q = p->next;
+ mpz_clear (p->repeat);
+ gfc_free_expr (p->expr);
+ free (p);
+ }
+}
+
+
+/* Free a list of gfc_data structures. */
+
+void
+gfc_free_data (gfc_data *p)
+{
+ gfc_data *q;
+
+ for (; p; p = q)
+ {
+ q = p->next;
+ free_variable (p->var);
+ free_value (p->value);
+ free (p);
+ }
+}
+
+
+/* Free all data in a namespace. */
+
+static void
+gfc_free_data_all (gfc_namespace *ns)
+{
+ gfc_data *d;
+
+ for (;ns->data;)
+ {
+ d = ns->data->next;
+ free (ns->data);
+ ns->data = d;
+ }
+}
+
+/* Reject data parsed since the last restore point was marked. */
+
+void
+gfc_reject_data (gfc_namespace *ns)
+{
+ gfc_data *d;
+
+ while (ns->data && ns->data != ns->old_data)
+ {
+ d = ns->data->next;
+ free (ns->data);
+ ns->data = d;
+ }
+}
+
+static match var_element (gfc_data_variable *);
+
+/* Match a list of variables terminated by an iterator and a right
+ parenthesis. */
+
+static match
+var_list (gfc_data_variable *parent)
+{
+ gfc_data_variable *tail, var;
+ match m;
+
+ m = var_element (&var);
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ if (m == MATCH_NO)
+ goto syntax;
+
+ tail = gfc_get_data_variable ();
+ *tail = var;
+
+ parent->list = tail;
+
+ for (;;)
+ {
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+
+ m = gfc_match_iterator (&parent->iter, 1);
+ if (m == MATCH_YES)
+ break;
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+
+ m = var_element (&var);
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ if (m == MATCH_NO)
+ goto syntax;
+
+ tail->next = gfc_get_data_variable ();
+ tail = tail->next;
+
+ *tail = var;
+ }
+
+ if (gfc_match_char (')') != MATCH_YES)
+ goto syntax;
+ return MATCH_YES;
+
+syntax:
+ gfc_syntax_error (ST_DATA);
+ return MATCH_ERROR;
+}
+
+
+/* Match a single element in a data variable list, which can be a
+ variable-iterator list. */
+
+static match
+var_element (gfc_data_variable *new_var)
+{
+ match m;
+ gfc_symbol *sym;
+
+ memset (new_var, 0, sizeof (gfc_data_variable));
+
+ if (gfc_match_char ('(') == MATCH_YES)
+ return var_list (new_var);
+
+ m = gfc_match_variable (&new_var->expr, 0);
+ if (m != MATCH_YES)
+ return m;
+
+ if (new_var->expr->expr_type == EXPR_CONSTANT
+ && new_var->expr->symtree == NULL)
+ {
+ gfc_error ("Inquiry parameter cannot appear in a "
+ "data-stmt-object-list at %C");
+ return MATCH_ERROR;
+ }
+
+ sym = new_var->expr->symtree->n.sym;
+
+ /* Symbol should already have an associated type. */
+ if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus))
+ return MATCH_ERROR;
+
+ if (!sym->attr.function && gfc_current_ns->parent
+ && gfc_current_ns->parent == sym->ns)
+ {
+ gfc_error ("Host associated variable %qs may not be in the DATA "
+ "statement at %C", sym->name);
+ return MATCH_ERROR;
+ }
+
+ if (gfc_current_state () != COMP_BLOCK_DATA
+ && sym->attr.in_common
+ && !gfc_notify_std (GFC_STD_GNU, "initialization of "
+ "common block variable %qs in DATA statement at %C",
+ sym->name))
+ return MATCH_ERROR;
+
+ if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where))
+ return MATCH_ERROR;
+
+ return MATCH_YES;
+}
+
+
+/* Match the top-level list of data variables. */
+
+static match
+top_var_list (gfc_data *d)
+{
+ gfc_data_variable var, *tail, *new_var;
+ match m;
+
+ tail = NULL;
+
+ for (;;)
+ {
+ m = var_element (&var);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+
+ new_var = gfc_get_data_variable ();
+ *new_var = var;
+ if (new_var->expr)
+ new_var->expr->where = gfc_current_locus;
+
+ if (tail == NULL)
+ d->var = new_var;
+ else
+ tail->next = new_var;
+
+ tail = new_var;
+
+ if (gfc_match_char ('/') == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_syntax_error (ST_DATA);
+ gfc_free_data_all (gfc_current_ns);
+ return MATCH_ERROR;
+}
+
+
+static match
+match_data_constant (gfc_expr **result)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym, *dt_sym = NULL;
+ gfc_expr *expr;
+ match m;
+ locus old_loc;
+
+ m = gfc_match_literal_constant (&expr, 1);
+ if (m == MATCH_YES)
+ {
+ *result = expr;
+ return MATCH_YES;
+ }
+
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+
+ m = gfc_match_null (result);
+ if (m != MATCH_NO)
+ return m;
+
+ old_loc = gfc_current_locus;
+
+ /* Should this be a structure component, try to match it
+ before matching a name. */
+ m = gfc_match_rvalue (result);
+ if (m == MATCH_ERROR)
+ return m;
+
+ if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE)
+ {
+ if (!gfc_simplify_expr (*result, 0))
+ m = MATCH_ERROR;
+ return m;
+ }
+ else if (m == MATCH_YES)
+ {
+ /* If a parameter inquiry ends up here, symtree is NULL but **result
+ contains the right constant expression. Check here. */
+ if ((*result)->symtree == NULL
+ && (*result)->expr_type == EXPR_CONSTANT
+ && ((*result)->ts.type == BT_INTEGER
+ || (*result)->ts.type == BT_REAL))
+ return m;
+
+ /* F2018:R845 data-stmt-constant is initial-data-target.
+ A data-stmt-constant shall be ... initial-data-target if and
+ only if the corresponding data-stmt-object has the POINTER
+ attribute. ... If data-stmt-constant is initial-data-target
+ the corresponding data statement object shall be
+ data-pointer-initialization compatible (7.5.4.6) with the initial
+ data target; the data statement object is initially associated
+ with the target. */
+ if ((*result)->symtree->n.sym->attr.save
+ && (*result)->symtree->n.sym->attr.target)
+ return m;
+ gfc_free_expr (*result);
+ }
+
+ gfc_current_locus = old_loc;
+
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ return m;
+
+ if (gfc_find_symbol (name, NULL, 1, &sym))
+ return MATCH_ERROR;
+
+ if (sym && sym->attr.generic)
+ dt_sym = gfc_find_dt_in_generic (sym);
+
+ if (sym == NULL
+ || (sym->attr.flavor != FL_PARAMETER
+ && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor))))
+ {
+ gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C",
+ name);
+ *result = NULL;
+ return MATCH_ERROR;
+ }
+ else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor))
+ return gfc_match_structure_constructor (dt_sym, result);
+
+ /* Check to see if the value is an initialization array expression. */
+ if (sym->value->expr_type == EXPR_ARRAY)
+ {
+ gfc_current_locus = old_loc;
+
+ m = gfc_match_init_expr (result);
+ if (m == MATCH_ERROR)
+ return m;
+
+ if (m == MATCH_YES)
+ {
+ if (!gfc_simplify_expr (*result, 0))
+ m = MATCH_ERROR;
+
+ if ((*result)->expr_type == EXPR_CONSTANT)
+ return m;
+ else
+ {
+ gfc_error ("Invalid initializer %s in Data statement at %C", name);
+ return MATCH_ERROR;
+ }
+ }
+ }
+
+ *result = gfc_copy_expr (sym->value);
+ return MATCH_YES;
+}
+
+
+/* Match a list of values in a DATA statement. The leading '/' has
+ already been seen at this point. */
+
+static match
+top_val_list (gfc_data *data)
+{
+ gfc_data_value *new_val, *tail;
+ gfc_expr *expr;
+ match m;
+
+ tail = NULL;
+
+ for (;;)
+ {
+ m = match_data_constant (&expr);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+
+ new_val = gfc_get_data_value ();
+ mpz_init (new_val->repeat);
+
+ if (tail == NULL)
+ data->value = new_val;
+ else
+ tail->next = new_val;
+
+ tail = new_val;
+
+ if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES)
+ {
+ tail->expr = expr;
+ mpz_set_ui (tail->repeat, 1);
+ }
+ else
+ {
+ mpz_set (tail->repeat, expr->value.integer);
+ gfc_free_expr (expr);
+
+ m = match_data_constant (&tail->expr);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ }
+
+ if (gfc_match_char ('/') == MATCH_YES)
+ break;
+ if (gfc_match_char (',') == MATCH_NO)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_syntax_error (ST_DATA);
+ gfc_free_data_all (gfc_current_ns);
+ return MATCH_ERROR;
+}
+
+
+/* Matches an old style initialization. */
+
+static match
+match_old_style_init (const char *name)
+{
+ match m;
+ gfc_symtree *st;
+ gfc_symbol *sym;
+ gfc_data *newdata, *nd;
+
+ /* Set up data structure to hold initializers. */
+ gfc_find_sym_tree (name, NULL, 0, &st);
+ sym = st->n.sym;
+
+ newdata = gfc_get_data ();
+ newdata->var = gfc_get_data_variable ();
+ newdata->var->expr = gfc_get_variable_expr (st);
+ newdata->var->expr->where = sym->declared_at;
+ newdata->where = gfc_current_locus;
+
+ /* Match initial value list. This also eats the terminal '/'. */
+ m = top_val_list (newdata);
+ if (m != MATCH_YES)
+ {
+ free (newdata);
+ return m;
+ }
+
+ /* Check that a BOZ did not creep into an old-style initialization. */
+ for (nd = newdata; nd; nd = nd->next)
+ {
+ if (nd->value->expr->ts.type == BT_BOZ
+ && gfc_invalid_boz (G_("BOZ at %L cannot appear in an old-style "
+ "initialization"), &nd->value->expr->where))
+ return MATCH_ERROR;
+
+ if (nd->var->expr->ts.type != BT_INTEGER
+ && nd->var->expr->ts.type != BT_REAL
+ && nd->value->expr->ts.type == BT_BOZ)
+ {
+ gfc_error (G_("BOZ literal constant near %L cannot be assigned to "
+ "a %qs variable in an old-style initialization"),
+ &nd->value->expr->where,
+ gfc_typename (&nd->value->expr->ts));
+ return MATCH_ERROR;
+ }
+ }
+
+ if (gfc_pure (NULL))
+ {
+ gfc_error ("Initialization at %C is not allowed in a PURE procedure");
+ free (newdata);
+ return MATCH_ERROR;
+ }
+ gfc_unset_implicit_pure (gfc_current_ns->proc_name);
+
+ /* Mark the variable as having appeared in a data statement. */
+ if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at))
+ {
+ free (newdata);
+ return MATCH_ERROR;
+ }
+
+ /* Chain in namespace list of DATA initializers. */
+ newdata->next = gfc_current_ns->data;
+ gfc_current_ns->data = newdata;
+
+ return m;
+}
+
+
+/* Match the stuff following a DATA statement. If ERROR_FLAG is set,
+ we are matching a DATA statement and are therefore issuing an error
+ if we encounter something unexpected, if not, we're trying to match
+ an old-style initialization expression of the form INTEGER I /2/. */
+
+match
+gfc_match_data (void)
+{
+ gfc_data *new_data;
+ gfc_expr *e;
+ gfc_ref *ref;
+ match m;
+ char c;
+
+ /* DATA has been matched. In free form source code, the next character
+ needs to be whitespace or '(' from an implied do-loop. Check that
+ here. */
+ c = gfc_peek_ascii_char ();
+ if (gfc_current_form == FORM_FREE && !gfc_is_whitespace (c) && c != '(')
+ return MATCH_NO;
+
+ /* Before parsing the rest of a DATA statement, check F2008:c1206. */
+ if ((gfc_current_state () == COMP_FUNCTION
+ || gfc_current_state () == COMP_SUBROUTINE)
+ && gfc_state_stack->previous->state == COMP_INTERFACE)
+ {
+ gfc_error ("DATA statement at %C cannot appear within an INTERFACE");
+ return MATCH_ERROR;
+ }
+
+ set_in_match_data (true);
+
+ for (;;)
+ {
+ new_data = gfc_get_data ();
+ new_data->where = gfc_current_locus;
+
+ m = top_var_list (new_data);
+ if (m != MATCH_YES)
+ goto cleanup;
+
+ if (new_data->var->iter.var
+ && new_data->var->iter.var->ts.type == BT_INTEGER
+ && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1
+ && new_data->var->list
+ && new_data->var->list->expr
+ && new_data->var->list->expr->ts.type == BT_CHARACTER
+ && new_data->var->list->expr->ref
+ && new_data->var->list->expr->ref->type == REF_SUBSTRING)
+ {
+ gfc_error ("Invalid substring in data-implied-do at %L in DATA "
+ "statement", &new_data->var->list->expr->where);
+ goto cleanup;
+ }
+
+ /* Check for an entity with an allocatable component, which is not
+ allowed. */
+ e = new_data->var->expr;
+ if (e)
+ {
+ bool invalid;
+
+ invalid = false;
+ for (ref = e->ref; ref; ref = ref->next)
+ if ((ref->type == REF_COMPONENT
+ && ref->u.c.component->attr.allocatable)
+ || (ref->type == REF_ARRAY
+ && e->symtree->n.sym->attr.pointer != 1
+ && ref->u.ar.as && ref->u.ar.as->type == AS_DEFERRED))
+ invalid = true;
+
+ if (invalid)
+ {
+ gfc_error ("Allocatable component or deferred-shaped array "
+ "near %C in DATA statement");
+ goto cleanup;
+ }
+
+ /* F2008:C567 (R536) A data-i-do-object or a variable that appears
+ as a data-stmt-object shall not be an object designator in which
+ a pointer appears other than as the entire rightmost part-ref. */
+ if (!e->ref && e->ts.type == BT_DERIVED
+ && e->symtree->n.sym->attr.pointer)
+ goto partref;
+
+ ref = e->ref;
+ if (e->symtree->n.sym->ts.type == BT_DERIVED
+ && e->symtree->n.sym->attr.pointer
+ && ref->type == REF_COMPONENT)
+ goto partref;
+
+ for (; ref; ref = ref->next)
+ if (ref->type == REF_COMPONENT
+ && ref->u.c.component->attr.pointer
+ && ref->next)
+ goto partref;
+ }
+
+ m = top_val_list (new_data);
+ if (m != MATCH_YES)
+ goto cleanup;
+
+ new_data->next = gfc_current_ns->data;
+ gfc_current_ns->data = new_data;
+
+ /* A BOZ literal constant cannot appear in a structure constructor.
+ Check for that here for a data statement value. */
+ if (new_data->value->expr->ts.type == BT_DERIVED
+ && new_data->value->expr->value.constructor)
+ {
+ gfc_constructor *c;
+ c = gfc_constructor_first (new_data->value->expr->value.constructor);
+ for (; c; c = gfc_constructor_next (c))
+ if (c->expr && c->expr->ts.type == BT_BOZ)
+ {
+ gfc_error ("BOZ literal constant at %L cannot appear in a "
+ "structure constructor", &c->expr->where);
+ return MATCH_ERROR;
+ }
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+
+ gfc_match_char (','); /* Optional comma */
+ }
+
+ set_in_match_data (false);
+
+ if (gfc_pure (NULL))
+ {
+ gfc_error ("DATA statement at %C is not allowed in a PURE procedure");
+ return MATCH_ERROR;
+ }
+ gfc_unset_implicit_pure (gfc_current_ns->proc_name);
+
+ return MATCH_YES;
+
+partref:
+
+ gfc_error ("part-ref with pointer attribute near %L is not "
+ "rightmost part-ref of data-stmt-object",
+ &e->where);
+
+cleanup:
+ set_in_match_data (false);
+ gfc_free_data (new_data);
+ return MATCH_ERROR;
+}
+
+
+/************************ Declaration statements *********************/
+
+
+/* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization
+ list). The difference here is the expression is a list of constants
+ and is surrounded by '/'.
+ The typespec ts must match the typespec of the variable which the
+ clist is initializing.
+ The arrayspec tells whether this should match a list of constants
+ corresponding to array elements or a scalar (as == NULL). */
+
+static match
+match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as)
+{
+ gfc_constructor_base array_head = NULL;
+ gfc_expr *expr = NULL;
+ match m = MATCH_ERROR;
+ locus where;
+ mpz_t repeat, cons_size, as_size;
+ bool scalar;
+ int cmp;
+
+ gcc_assert (ts);
+
+ /* We have already matched '/' - now look for a constant list, as with
+ top_val_list from decl.c, but append the result to an array. */
+ if (gfc_match ("/") == MATCH_YES)
+ {
+ gfc_error ("Empty old style initializer list at %C");
+ return MATCH_ERROR;
+ }
+
+ where = gfc_current_locus;
+ scalar = !as || !as->rank;
+
+ if (!scalar && !spec_size (as, &as_size))
+ {
+ gfc_error ("Array in initializer list at %L must have an explicit shape",
+ as->type == AS_EXPLICIT ? &as->upper[0]->where : &where);
+ /* Nothing to cleanup yet. */
+ return MATCH_ERROR;
+ }
+
+ mpz_init_set_ui (repeat, 0);
+
+ for (;;)
+ {
+ m = match_data_constant (&expr);
+ if (m != MATCH_YES)
+ expr = NULL; /* match_data_constant may set expr to garbage */
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ goto cleanup;
+
+ /* Found r in repeat spec r*c; look for the constant to repeat. */
+ if ( gfc_match_char ('*') == MATCH_YES)
+ {
+ if (scalar)
+ {
+ gfc_error ("Repeat spec invalid in scalar initializer at %C");
+ goto cleanup;
+ }
+ if (expr->ts.type != BT_INTEGER)
+ {
+ gfc_error ("Repeat spec must be an integer at %C");
+ goto cleanup;
+ }
+ mpz_set (repeat, expr->value.integer);
+ gfc_free_expr (expr);
+ expr = NULL;
+
+ m = match_data_constant (&expr);
+ if (m == MATCH_NO)
+ {
+ m = MATCH_ERROR;
+ gfc_error ("Expected data constant after repeat spec at %C");
+ }
+ if (m != MATCH_YES)
+ goto cleanup;
+ }
+ /* No repeat spec, we matched the data constant itself. */
+ else
+ mpz_set_ui (repeat, 1);
+
+ if (!scalar)
+ {
+ /* Add the constant initializer as many times as repeated. */
+ for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1))
+ {
+ /* Make sure types of elements match */
+ if(ts && !gfc_compare_types (&expr->ts, ts)
+ && !gfc_convert_type (expr, ts, 1))
+ goto cleanup;
+
+ gfc_constructor_append_expr (&array_head,
+ gfc_copy_expr (expr), &gfc_current_locus);
+ }
+
+ gfc_free_expr (expr);
+ expr = NULL;
+ }
+
+ /* For scalar initializers quit after one element. */
+ else
+ {
+ if(gfc_match_char ('/') != MATCH_YES)
+ {
+ gfc_error ("End of scalar initializer expected at %C");
+ goto cleanup;
+ }
+ break;
+ }
+
+ if (gfc_match_char ('/') == MATCH_YES)
+ break;
+ if (gfc_match_char (',') == MATCH_NO)
+ goto syntax;
+ }
+
+ /* If we break early from here out, we encountered an error. */
+ m = MATCH_ERROR;
+
+ /* Set up expr as an array constructor. */
+ if (!scalar)
+ {
+ expr = gfc_get_array_expr (ts->type, ts->kind, &where);
+ expr->ts = *ts;
+ expr->value.constructor = array_head;
+
+ /* Validate sizes. We built expr ourselves, so cons_size will be
+ constant (we fail above for non-constant expressions).
+ We still need to verify that the sizes match. */
+ gcc_assert (gfc_array_size (expr, &cons_size));
+ cmp = mpz_cmp (cons_size, as_size);
+ if (cmp < 0)
+ gfc_error ("Not enough elements in array initializer at %C");
+ else if (cmp > 0)
+ gfc_error ("Too many elements in array initializer at %C");
+ mpz_clear (cons_size);
+ if (cmp)
+ goto cleanup;
+
+ /* Set the rank/shape to match the LHS as auto-reshape is implied. */
+ expr->rank = as->rank;
+ expr->shape = gfc_get_shape (as->rank);
+ for (int i = 0; i < as->rank; ++i)
+ spec_dimen_size (as, i, &expr->shape[i]);
+ }
+
+ /* Make sure scalar types match. */
+ else if (!gfc_compare_types (&expr->ts, ts)
+ && !gfc_convert_type (expr, ts, 1))
+ goto cleanup;
+
+ if (expr->ts.u.cl)
+ expr->ts.u.cl->length_from_typespec = 1;
+
+ *result = expr;
+ m = MATCH_YES;
+ goto done;
+
+syntax:
+ m = MATCH_ERROR;
+ gfc_error ("Syntax error in old style initializer list at %C");
+
+cleanup:
+ if (expr)
+ expr->value.constructor = NULL;
+ gfc_free_expr (expr);
+ gfc_constructor_free (array_head);
+
+done:
+ mpz_clear (repeat);
+ if (!scalar)
+ mpz_clear (as_size);
+ return m;
+}
+
+
+/* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */
+
+static bool
+merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy)
+{
+ if ((from->type == AS_ASSUMED_RANK && to->corank)
+ || (to->type == AS_ASSUMED_RANK && from->corank))
+ {
+ gfc_error ("The assumed-rank array at %C shall not have a codimension");
+ return false;
+ }
+
+ if (to->rank == 0 && from->rank > 0)
+ {
+ to->rank = from->rank;
+ to->type = from->type;
+ to->cray_pointee = from->cray_pointee;
+ to->cp_was_assumed = from->cp_was_assumed;
+
+ for (int i = to->corank - 1; i >= 0; i--)
+ {
+ /* Do not exceed the limits on lower[] and upper[]. gfortran
+ cleans up elsewhere. */
+ int j = from->rank + i;
+ if (j >= GFC_MAX_DIMENSIONS)
+ break;
+
+ to->lower[j] = to->lower[i];
+ to->upper[j] = to->upper[i];
+ }
+ for (int i = 0; i < from->rank; i++)
+ {
+ if (copy)
+ {
+ to->lower[i] = gfc_copy_expr (from->lower[i]);
+ to->upper[i] = gfc_copy_expr (from->upper[i]);
+ }
+ else
+ {
+ to->lower[i] = from->lower[i];
+ to->upper[i] = from->upper[i];
+ }
+ }
+ }
+ else if (to->corank == 0 && from->corank > 0)
+ {
+ to->corank = from->corank;
+ to->cotype = from->cotype;
+
+ for (int i = 0; i < from->corank; i++)
+ {
+ /* Do not exceed the limits on lower[] and upper[]. gfortran
+ cleans up elsewhere. */
+ int k = from->rank + i;
+ int j = to->rank + i;
+ if (j >= GFC_MAX_DIMENSIONS)
+ break;
+
+ if (copy)
+ {
+ to->lower[j] = gfc_copy_expr (from->lower[k]);
+ to->upper[j] = gfc_copy_expr (from->upper[k]);
+ }
+ else
+ {
+ to->lower[j] = from->lower[k];
+ to->upper[j] = from->upper[k];
+ }
+ }
+ }
+
+ if (to->rank + to->corank > GFC_MAX_DIMENSIONS)
+ {
+ gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum "
+ "allowed dimensions of %d",
+ to->rank, to->corank, GFC_MAX_DIMENSIONS);
+ to->corank = GFC_MAX_DIMENSIONS - to->rank;
+ return false;
+ }
+ return true;
+}
+
+
+/* Match an intent specification. Since this can only happen after an
+ INTENT word, a legal intent-spec must follow. */
+
+static sym_intent
+match_intent_spec (void)
+{
+
+ if (gfc_match (" ( in out )") == MATCH_YES)
+ return INTENT_INOUT;
+ if (gfc_match (" ( in )") == MATCH_YES)
+ return INTENT_IN;
+ if (gfc_match (" ( out )") == MATCH_YES)
+ return INTENT_OUT;
+
+ gfc_error ("Bad INTENT specification at %C");
+ return INTENT_UNKNOWN;
+}
+
+
+/* Matches a character length specification, which is either a
+ specification expression, '*', or ':'. */
+
+static match
+char_len_param_value (gfc_expr **expr, bool *deferred)
+{
+ match m;
+
+ *expr = NULL;
+ *deferred = false;
+
+ if (gfc_match_char ('*') == MATCH_YES)
+ return MATCH_YES;
+
+ if (gfc_match_char (':') == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C"))
+ return MATCH_ERROR;
+
+ *deferred = true;
+
+ return MATCH_YES;
+ }
+
+ m = gfc_match_expr (expr);
+
+ if (m == MATCH_NO || m == MATCH_ERROR)
+ return m;
+
+ if (!gfc_expr_check_typed (*expr, gfc_current_ns, false))
+ return MATCH_ERROR;
+
+ /* If gfortran gets an EXPR_OP, try to simplifiy it. This catches things
+ like CHARACTER(([1])). */
+ if ((*expr)->expr_type == EXPR_OP)
+ gfc_simplify_expr (*expr, 1);
+
+ if ((*expr)->expr_type == EXPR_FUNCTION)
+ {
+ if ((*expr)->ts.type == BT_INTEGER
+ || ((*expr)->ts.type == BT_UNKNOWN
+ && strcmp((*expr)->symtree->name, "null") != 0))
+ return MATCH_YES;
+
+ goto syntax;
+ }
+ else if ((*expr)->expr_type == EXPR_CONSTANT)
+ {
+ /* F2008, 4.4.3.1: The length is a type parameter; its kind is
+ processor dependent and its value is greater than or equal to zero.
+ F2008, 4.4.3.2: If the character length parameter value evaluates
+ to a negative value, the length of character entities declared
+ is zero. */
+
+ if ((*expr)->ts.type == BT_INTEGER)
+ {
+ if (mpz_cmp_si ((*expr)->value.integer, 0) < 0)
+ mpz_set_si ((*expr)->value.integer, 0);
+ }
+ else
+ goto syntax;
+ }
+ else if ((*expr)->expr_type == EXPR_ARRAY)
+ goto syntax;
+ else if ((*expr)->expr_type == EXPR_VARIABLE)
+ {
+ bool t;
+ gfc_expr *e;
+
+ e = gfc_copy_expr (*expr);
+
+ /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']",
+ which causes an ICE if gfc_reduce_init_expr() is called. */
+ if (e->ref && e->ref->type == REF_ARRAY
+ && e->ref->u.ar.type == AR_UNKNOWN
+ && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE)
+ goto syntax;
+
+ t = gfc_reduce_init_expr (e);
+
+ if (!t && e->ts.type == BT_UNKNOWN
+ && e->symtree->n.sym->attr.untyped == 1
+ && (flag_implicit_none
+ || e->symtree->n.sym->ns->seen_implicit_none == 1
+ || e->symtree->n.sym->ns->parent->seen_implicit_none == 1))
+ {
+ gfc_free_expr (e);
+ goto syntax;
+ }
+
+ if ((e->ref && e->ref->type == REF_ARRAY
+ && e->ref->u.ar.type != AR_ELEMENT)
+ || (!e->ref && e->expr_type == EXPR_ARRAY))
+ {
+ gfc_free_expr (e);
+ goto syntax;
+ }
+
+ gfc_free_expr (e);
+ }
+
+ if (gfc_seen_div0)
+ m = MATCH_ERROR;
+
+ return m;
+
+syntax:
+ gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where);
+ return MATCH_ERROR;
+}
+
+
+/* A character length is a '*' followed by a literal integer or a
+ char_len_param_value in parenthesis. */
+
+static match
+match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check)
+{
+ int length;
+ match m;
+
+ *deferred = false;
+ m = gfc_match_char ('*');
+ if (m != MATCH_YES)
+ return m;
+
+ m = gfc_match_small_literal_int (&length, NULL);
+ if (m == MATCH_ERROR)
+ return m;
+
+ if (m == MATCH_YES)
+ {
+ if (obsolescent_check
+ && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C"))
+ return MATCH_ERROR;
+ *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length);
+ return m;
+ }
+
+ if (gfc_match_char ('(') == MATCH_NO)
+ goto syntax;
+
+ m = char_len_param_value (expr, deferred);
+ if (m != MATCH_YES && gfc_matching_function)
+ {
+ gfc_undo_symbols ();
+ m = MATCH_YES;
+ }
+
+ if (m == MATCH_ERROR)
+ return m;
+ if (m == MATCH_NO)
+ goto syntax;
+
+ if (gfc_match_char (')') == MATCH_NO)
+ {
+ gfc_free_expr (*expr);
+ *expr = NULL;
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in character length specification at %C");
+ return MATCH_ERROR;
+}
+
+
+/* Special subroutine for finding a symbol. Check if the name is found
+ in the current name space. If not, and we're compiling a function or
+ subroutine and the parent compilation unit is an interface, then check
+ to see if the name we've been given is the name of the interface
+ (located in another namespace). */
+
+static int
+find_special (const char *name, gfc_symbol **result, bool allow_subroutine)
+{
+ gfc_state_data *s;
+ gfc_symtree *st;
+ int i;
+
+ i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine);
+ if (i == 0)
+ {
+ *result = st ? st->n.sym : NULL;
+ goto end;
+ }
+
+ if (gfc_current_state () != COMP_SUBROUTINE
+ && gfc_current_state () != COMP_FUNCTION)
+ goto end;
+
+ s = gfc_state_stack->previous;
+ if (s == NULL)
+ goto end;
+
+ if (s->state != COMP_INTERFACE)
+ goto end;
+ if (s->sym == NULL)
+ goto end; /* Nameless interface. */
+
+ if (strcmp (name, s->sym->name) == 0)
+ {
+ *result = s->sym;
+ return 0;
+ }
+
+end:
+ return i;
+}
+
+
+/* Special subroutine for getting a symbol node associated with a
+ procedure name, used in SUBROUTINE and FUNCTION statements. The
+ symbol is created in the parent using with symtree node in the
+ child unit pointing to the symbol. If the current namespace has no
+ parent, then the symbol is just created in the current unit. */
+
+static int
+get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry)
+{
+ gfc_symtree *st;
+ gfc_symbol *sym;
+ int rc = 0;
+
+ /* Module functions have to be left in their own namespace because
+ they have potentially (almost certainly!) already been referenced.
+ In this sense, they are rather like external functions. This is
+ fixed up in resolve.c(resolve_entries), where the symbol name-
+ space is set to point to the master function, so that the fake
+ result mechanism can work. */
+ if (module_fcn_entry)
+ {
+ /* Present if entry is declared to be a module procedure. */
+ rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result);
+
+ if (*result == NULL)
+ rc = gfc_get_symbol (name, NULL, result);
+ else if (!gfc_get_symbol (name, NULL, &sym) && sym
+ && (*result)->ts.type == BT_UNKNOWN
+ && sym->attr.flavor == FL_UNKNOWN)
+ /* Pick up the typespec for the entry, if declared in the function
+ body. Note that this symbol is FL_UNKNOWN because it will
+ only have appeared in a type declaration. The local symtree
+ is set to point to the module symbol and a unique symtree
+ to the local version. This latter ensures a correct clearing
+ of the symbols. */
+ {
+ /* If the ENTRY proceeds its specification, we need to ensure
+ that this does not raise a "has no IMPLICIT type" error. */
+ if (sym->ts.type == BT_UNKNOWN)
+ sym->attr.untyped = 1;
+
+ (*result)->ts = sym->ts;
+
+ /* Put the symbol in the procedure namespace so that, should
+ the ENTRY precede its specification, the specification
+ can be applied. */
+ (*result)->ns = gfc_current_ns;
+
+ gfc_find_sym_tree (name, gfc_current_ns, 0, &st);
+ st->n.sym = *result;
+ st = gfc_get_unique_symtree (gfc_current_ns);
+ sym->refs++;
+ st->n.sym = sym;
+ }
+ }
+ else
+ rc = gfc_get_symbol (name, gfc_current_ns->parent, result);
+
+ if (rc)
+ return rc;
+
+ sym = *result;
+ if (sym->attr.proc == PROC_ST_FUNCTION)
+ return rc;
+
+ if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY)
+ {
+ /* Create a partially populated interface symbol to carry the
+ characteristics of the procedure and the result. */
+ sym->tlink = gfc_new_symbol (name, sym->ns);
+ gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus);
+ gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL);
+ if (sym->attr.dimension)
+ sym->tlink->as = gfc_copy_array_spec (sym->as);
+
+ /* Ideally, at this point, a copy would be made of the formal
+ arguments and their namespace. However, this does not appear
+ to be necessary, albeit at the expense of not being able to
+ use gfc_compare_interfaces directly. */
+
+ if (sym->result && sym->result != sym)
+ {
+ sym->tlink->result = sym->result;
+ sym->result = NULL;
+ }
+ else if (sym->result)
+ {
+ sym->tlink->result = sym->tlink;
+ }
+ }
+ else if (sym && !sym->gfc_new
+ && gfc_current_state () != COMP_INTERFACE)
+ {
+ /* Trap another encompassed procedure with the same name. All
+ these conditions are necessary to avoid picking up an entry
+ whose name clashes with that of the encompassing procedure;
+ this is handled using gsymbols to register unique, globally
+ accessible names. */
+ if (sym->attr.flavor != 0
+ && sym->attr.proc != 0
+ && (sym->attr.subroutine || sym->attr.function || sym->attr.entry)
+ && sym->attr.if_source != IFSRC_UNKNOWN)
+ {
+ gfc_error_now ("Procedure %qs at %C is already defined at %L",
+ name, &sym->declared_at);
+ return true;
+ }
+ if (sym->attr.flavor != 0
+ && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN)
+ {
+ gfc_error_now ("Procedure %qs at %C is already defined at %L",
+ name, &sym->declared_at);
+ return true;
+ }
+
+ if (sym->attr.external && sym->attr.procedure
+ && gfc_current_state () == COMP_CONTAINS)
+ {
+ gfc_error_now ("Contained procedure %qs at %C clashes with "
+ "procedure defined at %L",
+ name, &sym->declared_at);
+ return true;
+ }
+
+ /* Trap a procedure with a name the same as interface in the
+ encompassing scope. */
+ if (sym->attr.generic != 0
+ && (sym->attr.subroutine || sym->attr.function)
+ && !sym->attr.mod_proc)
+ {
+ gfc_error_now ("Name %qs at %C is already defined"
+ " as a generic interface at %L",
+ name, &sym->declared_at);
+ return true;
+ }
+
+ /* Trap declarations of attributes in encompassing scope. The
+ signature for this is that ts.kind is nonzero for no-CLASS
+ entity. For a CLASS entity, ts.kind is zero. */
+ if ((sym->ts.kind != 0 || sym->ts.type == BT_CLASS)
+ && !sym->attr.implicit_type
+ && sym->attr.proc == 0
+ && gfc_current_ns->parent != NULL
+ && sym->attr.access == 0
+ && !module_fcn_entry)
+ {
+ gfc_error_now ("Procedure %qs at %C has an explicit interface "
+ "from a previous declaration", name);
+ return true;
+ }
+ }
+
+ /* C1246 (R1225) MODULE shall appear only in the function-stmt or
+ subroutine-stmt of a module subprogram or of a nonabstract interface
+ body that is declared in the scoping unit of a module or submodule. */
+ if (sym->attr.external
+ && (sym->attr.subroutine || sym->attr.function)
+ && sym->attr.if_source == IFSRC_IFBODY
+ && !current_attr.module_procedure
+ && sym->attr.proc == PROC_MODULE
+ && gfc_state_stack->state == COMP_CONTAINS)
+ {
+ gfc_error_now ("Procedure %qs defined in interface body at %L "
+ "clashes with internal procedure defined at %C",
+ name, &sym->declared_at);
+ return true;
+ }
+
+ if (sym && !sym->gfc_new
+ && sym->attr.flavor != FL_UNKNOWN
+ && sym->attr.referenced == 0 && sym->attr.subroutine == 1
+ && gfc_state_stack->state == COMP_CONTAINS
+ && gfc_state_stack->previous->state == COMP_SUBROUTINE)
+ {
+ gfc_error_now ("Procedure %qs at %C is already defined at %L",
+ name, &sym->declared_at);
+ return true;
+ }
+
+ if (gfc_current_ns->parent == NULL || *result == NULL)
+ return rc;
+
+ /* Module function entries will already have a symtree in
+ the current namespace but will need one at module level. */
+ if (module_fcn_entry)
+ {
+ /* Present if entry is declared to be a module procedure. */
+ rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st);
+ if (st == NULL)
+ st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name);
+ }
+ else
+ st = gfc_new_symtree (&gfc_current_ns->sym_root, name);
+
+ st->n.sym = sym;
+ sym->refs++;
+
+ /* See if the procedure should be a module procedure. */
+
+ if (((sym->ns->proc_name != NULL
+ && sym->ns->proc_name->attr.flavor == FL_MODULE
+ && sym->attr.proc != PROC_MODULE)
+ || (module_fcn_entry && sym->attr.proc != PROC_MODULE))
+ && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL))
+ rc = 2;
+
+ return rc;
+}
+
+
+/* Verify that the given symbol representing a parameter is C
+ interoperable, by checking to see if it was marked as such after
+ its declaration. If the given symbol is not interoperable, a
+ warning is reported, thus removing the need to return the status to
+ the calling function. The standard does not require the user use
+ one of the iso_c_binding named constants to declare an
+ interoperable parameter, but we can't be sure if the param is C
+ interop or not if the user doesn't. For example, integer(4) may be
+ legal Fortran, but doesn't have meaning in C. It may interop with
+ a number of the C types, which causes a problem because the
+ compiler can't know which one. This code is almost certainly not
+ portable, and the user will get what they deserve if the C type
+ across platforms isn't always interoperable with integer(4). If
+ the user had used something like integer(c_int) or integer(c_long),
+ the compiler could have automatically handled the varying sizes
+ across platforms. */
+
+bool
+gfc_verify_c_interop_param (gfc_symbol *sym)
+{
+ int is_c_interop = 0;
+ bool retval = true;
+
+ /* We check implicitly typed variables in symbol.c:gfc_set_default_type().
+ Don't repeat the checks here. */
+ if (sym->attr.implicit_type)
+ return true;
+
+ /* For subroutines or functions that are passed to a BIND(C) procedure,
+ they're interoperable if they're BIND(C) and their params are all
+ interoperable. */
+ if (sym->attr.flavor == FL_PROCEDURE)
+ {
+ if (sym->attr.is_bind_c == 0)
+ {
+ gfc_error_now ("Procedure %qs at %L must have the BIND(C) "
+ "attribute to be C interoperable", sym->name,
+ &(sym->declared_at));
+ return false;
+ }
+ else
+ {
+ if (sym->attr.is_c_interop == 1)
+ /* We've already checked this procedure; don't check it again. */
+ return true;
+ else
+ return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common,
+ sym->common_block);
+ }
+ }
+
+ /* See if we've stored a reference to a procedure that owns sym. */
+ if (sym->ns != NULL && sym->ns->proc_name != NULL)
+ {
+ if (sym->ns->proc_name->attr.is_bind_c == 1)
+ {
+ is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0);
+
+ if (is_c_interop != 1)
+ {
+ /* Make personalized messages to give better feedback. */
+ if (sym->ts.type == BT_DERIVED)
+ gfc_error ("Variable %qs at %L is a dummy argument to the "
+ "BIND(C) procedure %qs but is not C interoperable "
+ "because derived type %qs is not C interoperable",
+ sym->name, &(sym->declared_at),
+ sym->ns->proc_name->name,
+ sym->ts.u.derived->name);
+ else if (sym->ts.type == BT_CLASS)
+ gfc_error ("Variable %qs at %L is a dummy argument to the "
+ "BIND(C) procedure %qs but is not C interoperable "
+ "because it is polymorphic",
+ sym->name, &(sym->declared_at),
+ sym->ns->proc_name->name);
+ else if (warn_c_binding_type)
+ gfc_warning (OPT_Wc_binding_type,
+ "Variable %qs at %L is a dummy argument of the "
+ "BIND(C) procedure %qs but may not be C "
+ "interoperable",
+ sym->name, &(sym->declared_at),
+ sym->ns->proc_name->name);
+ }
+
+ /* Per F2018, 18.3.6 (5), pointer + contiguous is not permitted. */
+ if (sym->attr.pointer && sym->attr.contiguous)
+ gfc_error ("Dummy argument %qs at %L may not be a pointer with "
+ "CONTIGUOUS attribute as procedure %qs is BIND(C)",
+ sym->name, &sym->declared_at, sym->ns->proc_name->name);
+
+ /* Per F2018, C1557, pointer/allocatable dummies to a bind(c)
+ procedure that are default-initialized are not permitted. */
+ if ((sym->attr.pointer || sym->attr.allocatable)
+ && sym->ts.type == BT_DERIVED
+ && gfc_has_default_initializer (sym->ts.u.derived))
+ {
+ gfc_error ("Default-initialized %s dummy argument %qs "
+ "at %L is not permitted in BIND(C) procedure %qs",
+ (sym->attr.pointer ? "pointer" : "allocatable"),
+ sym->name, &sym->declared_at,
+ sym->ns->proc_name->name);
+ retval = false;
+ }
+
+ /* Character strings are only C interoperable if they have a
+ length of 1. However, as an argument they are also iteroperable
+ when passed as descriptor (which requires len=: or len=*). */
+ if (sym->ts.type == BT_CHARACTER)
+ {
+ gfc_charlen *cl = sym->ts.u.cl;
+
+ if (sym->attr.allocatable || sym->attr.pointer)
+ {
+ /* F2018, 18.3.6 (6). */
+ if (!sym->ts.deferred)
+ {
+ if (sym->attr.allocatable)
+ gfc_error ("Allocatable character dummy argument %qs "
+ "at %L must have deferred length as "
+ "procedure %qs is BIND(C)", sym->name,
+ &sym->declared_at, sym->ns->proc_name->name);
+ else
+ gfc_error ("Pointer character dummy argument %qs at %L "
+ "must have deferred length as procedure %qs "
+ "is BIND(C)", sym->name, &sym->declared_at,
+ sym->ns->proc_name->name);
+ retval = false;
+ }
+ else if (!gfc_notify_std (GFC_STD_F2018,
+ "Deferred-length character dummy "
+ "argument %qs at %L of procedure "
+ "%qs with BIND(C) attribute",
+ sym->name, &sym->declared_at,
+ sym->ns->proc_name->name))
+ retval = false;
+ }
+ else if (sym->attr.value
+ && (!cl || !cl->length
+ || cl->length->expr_type != EXPR_CONSTANT
+ || mpz_cmp_si (cl->length->value.integer, 1) != 0))
+ {
+ gfc_error ("Character dummy argument %qs at %L must be "
+ "of length 1 as it has the VALUE attribute",
+ sym->name, &sym->declared_at);
+ retval = false;
+ }
+ else if (!cl || !cl->length)
+ {
+ /* Assumed length; F2018, 18.3.6 (5)(2).
+ Uses the CFI array descriptor - also for scalars and
+ explicit-size/assumed-size arrays. */
+ if (!gfc_notify_std (GFC_STD_F2018,
+ "Assumed-length character dummy argument "
+ "%qs at %L of procedure %qs with BIND(C) "
+ "attribute", sym->name, &sym->declared_at,
+ sym->ns->proc_name->name))
+ retval = false;
+ }
+ else if (cl->length->expr_type != EXPR_CONSTANT
+ || mpz_cmp_si (cl->length->value.integer, 1) != 0)
+ {
+ /* F2018, 18.3.6, (5), item 4. */
+ if (!sym->attr.dimension
+ || sym->as->type == AS_ASSUMED_SIZE
+ || sym->as->type == AS_EXPLICIT)
+ {
+ gfc_error ("Character dummy argument %qs at %L must be "
+ "of constant length of one or assumed length, "
+ "unless it has assumed shape or assumed rank, "
+ "as procedure %qs has the BIND(C) attribute",
+ sym->name, &sym->declared_at,
+ sym->ns->proc_name->name);
+ retval = false;
+ }
+ /* else: valid only since F2018 - and an assumed-shape/rank
+ array; however, gfc_notify_std is already called when
+ those array types are used. Thus, silently accept F200x. */
+ }
+ }
+
+ /* We have to make sure that any param to a bind(c) routine does
+ not have the allocatable, pointer, or optional attributes,
+ according to J3/04-007, section 5.1. */
+ if (sym->attr.allocatable == 1
+ && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with "
+ "ALLOCATABLE attribute in procedure %qs "
+ "with BIND(C)", sym->name,
+ &(sym->declared_at),
+ sym->ns->proc_name->name))
+ retval = false;
+
+ if (sym->attr.pointer == 1
+ && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with "
+ "POINTER attribute in procedure %qs "
+ "with BIND(C)", sym->name,
+ &(sym->declared_at),
+ sym->ns->proc_name->name))
+ retval = false;
+
+ if (sym->attr.optional == 1 && sym->attr.value)
+ {
+ gfc_error ("Variable %qs at %L cannot have both the OPTIONAL "
+ "and the VALUE attribute because procedure %qs "
+ "is BIND(C)", sym->name, &(sym->declared_at),
+ sym->ns->proc_name->name);
+ retval = false;
+ }
+ else if (sym->attr.optional == 1
+ && !gfc_notify_std (GFC_STD_F2018, "Variable %qs "
+ "at %L with OPTIONAL attribute in "
+ "procedure %qs which is BIND(C)",
+ sym->name, &(sym->declared_at),
+ sym->ns->proc_name->name))
+ retval = false;
+
+ /* Make sure that if it has the dimension attribute, that it is
+ either assumed size or explicit shape. Deferred shape is already
+ covered by the pointer/allocatable attribute. */
+ if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE
+ && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs "
+ "at %L as dummy argument to the BIND(C) "
+ "procedure %qs at %L", sym->name,
+ &(sym->declared_at),
+ sym->ns->proc_name->name,
+ &(sym->ns->proc_name->declared_at)))
+ retval = false;
+ }
+ }
+
+ return retval;
+}
+
+
+
+/* Function called by variable_decl() that adds a name to the symbol table. */
+
+static bool
+build_sym (const char *name, gfc_charlen *cl, bool cl_deferred,
+ gfc_array_spec **as, locus *var_locus)
+{
+ symbol_attribute attr;
+ gfc_symbol *sym;
+ int upper;
+ gfc_symtree *st;
+
+ /* Symbols in a submodule are host associated from the parent module or
+ submodules. Therefore, they can be overridden by declarations in the
+ submodule scope. Deal with this by attaching the existing symbol to
+ a new symtree and recycling the old symtree with a new symbol... */
+ st = gfc_find_symtree (gfc_current_ns->sym_root, name);
+ if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE
+ && st->n.sym != NULL
+ && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule)
+ {
+ gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns);
+ s->n.sym = st->n.sym;
+ sym = gfc_new_symbol (name, gfc_current_ns);
+
+
+ st->n.sym = sym;
+ sym->refs++;
+ gfc_set_sym_referenced (sym);
+ }
+ /* ...Otherwise generate a new symtree and new symbol. */
+ else if (gfc_get_symbol (name, NULL, &sym))
+ return false;
+
+ /* Check if the name has already been defined as a type. The
+ first letter of the symtree will be in upper case then. Of
+ course, this is only necessary if the upper case letter is
+ actually different. */
+
+ upper = TOUPPER(name[0]);
+ if (upper != name[0])
+ {
+ char u_name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symtree *st;
+
+ gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN);
+ strcpy (u_name, name);
+ u_name[0] = upper;
+
+ st = gfc_find_symtree (gfc_current_ns->sym_root, u_name);
+
+ /* STRUCTURE types can alias symbol names */
+ if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT)
+ {
+ gfc_error ("Symbol %qs at %C also declared as a type at %L", name,
+ &st->n.sym->declared_at);
+ return false;
+ }
+ }
+
+ /* Start updating the symbol table. Add basic type attribute if present. */
+ if (current_ts.type != BT_UNKNOWN
+ && (sym->attr.implicit_type == 0
+ || !gfc_compare_types (&sym->ts, &current_ts))
+ && !gfc_add_type (sym, &current_ts, var_locus))
+ return false;
+
+ if (sym->ts.type == BT_CHARACTER)
+ {
+ sym->ts.u.cl = cl;
+ sym->ts.deferred = cl_deferred;
+ }
+
+ /* Add dimension attribute if present. */
+ if (!gfc_set_array_spec (sym, *as, var_locus))
+ return false;
+ *as = NULL;
+
+ /* Add attribute to symbol. The copy is so that we can reset the
+ dimension attribute. */
+ attr = current_attr;
+ attr.dimension = 0;
+ attr.codimension = 0;
+
+ if (!gfc_copy_attr (&sym->attr, &attr, var_locus))
+ return false;
+
+ /* Finish any work that may need to be done for the binding label,
+ if it's a bind(c). The bind(c) attr is found before the symbol
+ is made, and before the symbol name (for data decls), so the
+ current_ts is holding the binding label, or nothing if the
+ name= attr wasn't given. Therefore, test here if we're dealing
+ with a bind(c) and make sure the binding label is set correctly. */
+ if (sym->attr.is_bind_c == 1)
+ {
+ if (!sym->binding_label)
+ {
+ /* Set the binding label and verify that if a NAME= was specified
+ then only one identifier was in the entity-decl-list. */
+ if (!set_binding_label (&sym->binding_label, sym->name,
+ num_idents_on_line))
+ return false;
+ }
+ }
+
+ /* See if we know we're in a common block, and if it's a bind(c)
+ common then we need to make sure we're an interoperable type. */
+ if (sym->attr.in_common == 1)
+ {
+ /* Test the common block object. */
+ if (sym->common_block != NULL && sym->common_block->is_bind_c == 1
+ && sym->ts.is_c_interop != 1)
+ {
+ gfc_error_now ("Variable %qs in common block %qs at %C "
+ "must be declared with a C interoperable "
+ "kind since common block %qs is BIND(C)",
+ sym->name, sym->common_block->name,
+ sym->common_block->name);
+ gfc_clear_error ();
+ }
+ }
+
+ sym->attr.implied_index = 0;
+
+ /* Use the parameter expressions for a parameterized derived type. */
+ if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS)
+ && sym->ts.u.derived->attr.pdt_type && type_param_spec_list)
+ sym->param_list = gfc_copy_actual_arglist (type_param_spec_list);
+
+ if (sym->ts.type == BT_CLASS)
+ return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as);
+
+ return true;
+}
+
+
+/* Set character constant to the given length. The constant will be padded or
+ truncated. If we're inside an array constructor without a typespec, we
+ additionally check that all elements have the same length; check_len -1
+ means no checking. */
+
+void
+gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr,
+ gfc_charlen_t check_len)
+{
+ gfc_char_t *s;
+ gfc_charlen_t slen;
+
+ if (expr->ts.type != BT_CHARACTER)
+ return;
+
+ if (expr->expr_type != EXPR_CONSTANT)
+ {
+ gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where);
+ return;
+ }
+
+ slen = expr->value.character.length;
+ if (len != slen)
+ {
+ s = gfc_get_wide_string (len + 1);
+ memcpy (s, expr->value.character.string,
+ MIN (len, slen) * sizeof (gfc_char_t));
+ if (len > slen)
+ gfc_wide_memset (&s[slen], ' ', len - slen);
+
+ if (warn_character_truncation && slen > len)
+ gfc_warning_now (OPT_Wcharacter_truncation,
+ "CHARACTER expression at %L is being truncated "
+ "(%ld/%ld)", &expr->where,
+ (long) slen, (long) len);
+
+ /* Apply the standard by 'hand' otherwise it gets cleared for
+ initializers. */
+ if (check_len != -1 && slen != check_len
+ && !(gfc_option.allow_std & GFC_STD_GNU))
+ gfc_error_now ("The CHARACTER elements of the array constructor "
+ "at %L must have the same length (%ld/%ld)",
+ &expr->where, (long) slen,
+ (long) check_len);
+
+ s[len] = '\0';
+ free (expr->value.character.string);
+ expr->value.character.string = s;
+ expr->value.character.length = len;
+ /* If explicit representation was given, clear it
+ as it is no longer needed after padding. */
+ if (expr->representation.length)
+ {
+ expr->representation.length = 0;
+ free (expr->representation.string);
+ expr->representation.string = NULL;
+ }
+ }
+}
+
+
+/* Function to create and update the enumerator history
+ using the information passed as arguments.
+ Pointer "max_enum" is also updated, to point to
+ enum history node containing largest initializer.
+
+ SYM points to the symbol node of enumerator.
+ INIT points to its enumerator value. */
+
+static void
+create_enum_history (gfc_symbol *sym, gfc_expr *init)
+{
+ enumerator_history *new_enum_history;
+ gcc_assert (sym != NULL && init != NULL);
+
+ new_enum_history = XCNEW (enumerator_history);
+
+ new_enum_history->sym = sym;
+ new_enum_history->initializer = init;
+ new_enum_history->next = NULL;
+
+ if (enum_history == NULL)
+ {
+ enum_history = new_enum_history;
+ max_enum = enum_history;
+ }
+ else
+ {
+ new_enum_history->next = enum_history;
+ enum_history = new_enum_history;
+
+ if (mpz_cmp (max_enum->initializer->value.integer,
+ new_enum_history->initializer->value.integer) < 0)
+ max_enum = new_enum_history;
+ }
+}
+
+
+/* Function to free enum kind history. */
+
+void
+gfc_free_enum_history (void)
+{
+ enumerator_history *current = enum_history;
+ enumerator_history *next;
+
+ while (current != NULL)
+ {
+ next = current->next;
+ free (current);
+ current = next;
+ }
+ max_enum = NULL;
+ enum_history = NULL;
+}
+
+
+/* Function called by variable_decl() that adds an initialization
+ expression to a symbol. */
+
+static bool
+add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus)
+{
+ symbol_attribute attr;
+ gfc_symbol *sym;
+ gfc_expr *init;
+
+ init = *initp;
+ if (find_special (name, &sym, false))
+ return false;
+
+ attr = sym->attr;
+
+ /* If this symbol is confirming an implicit parameter type,
+ then an initialization expression is not allowed. */
+ if (attr.flavor == FL_PARAMETER && sym->value != NULL)
+ {
+ if (*initp != NULL)
+ {
+ gfc_error ("Initializer not allowed for PARAMETER %qs at %C",
+ sym->name);
+ return false;
+ }
+ else
+ return true;
+ }
+
+ if (init == NULL)
+ {
+ /* An initializer is required for PARAMETER declarations. */
+ if (attr.flavor == FL_PARAMETER)
+ {
+ gfc_error ("PARAMETER at %L is missing an initializer", var_locus);
+ return false;
+ }
+ }
+ else
+ {
+ /* If a variable appears in a DATA block, it cannot have an
+ initializer. */
+ if (sym->attr.data)
+ {
+ gfc_error ("Variable %qs at %C with an initializer already "
+ "appears in a DATA statement", sym->name);
+ return false;
+ }
+
+ /* Check if the assignment can happen. This has to be put off
+ until later for derived type variables and procedure pointers. */
+ if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type)
+ && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS
+ && !sym->attr.proc_pointer
+ && !gfc_check_assign_symbol (sym, NULL, init))
+ return false;
+
+ if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl
+ && init->ts.type == BT_CHARACTER)
+ {
+ /* Update symbol character length according initializer. */
+ if (!gfc_check_assign_symbol (sym, NULL, init))
+ return false;
+
+ if (sym->ts.u.cl->length == NULL)
+ {
+ gfc_charlen_t clen;
+ /* If there are multiple CHARACTER variables declared on the
+ same line, we don't want them to share the same length. */
+ sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
+
+ if (sym->attr.flavor == FL_PARAMETER)
+ {
+ if (init->expr_type == EXPR_CONSTANT)
+ {
+ clen = init->value.character.length;
+ sym->ts.u.cl->length
+ = gfc_get_int_expr (gfc_charlen_int_kind,
+ NULL, clen);
+ }
+ else if (init->expr_type == EXPR_ARRAY)
+ {
+ if (init->ts.u.cl && init->ts.u.cl->length)
+ {
+ const gfc_expr *length = init->ts.u.cl->length;
+ if (length->expr_type != EXPR_CONSTANT)
+ {
+ gfc_error ("Cannot initialize parameter array "
+ "at %L "
+ "with variable length elements",
+ &sym->declared_at);
+ return false;
+ }
+ clen = mpz_get_si (length->value.integer);
+ }
+ else if (init->value.constructor)
+ {
+ gfc_constructor *c;
+ c = gfc_constructor_first (init->value.constructor);
+ clen = c->expr->value.character.length;
+ }
+ else
+ gcc_unreachable ();
+ sym->ts.u.cl->length
+ = gfc_get_int_expr (gfc_charlen_int_kind,
+ NULL, clen);
+ }
+ else if (init->ts.u.cl && init->ts.u.cl->length)
+ sym->ts.u.cl->length =
+ gfc_copy_expr (init->ts.u.cl->length);
+ }
+ }
+ /* Update initializer character length according symbol. */
+ else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT)
+ {
+ if (!gfc_specification_expr (sym->ts.u.cl->length))
+ return false;
+
+ int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind,
+ false);
+ /* resolve_charlen will complain later on if the length
+ is too large. Just skeep the initialization in that case. */
+ if (mpz_cmp (sym->ts.u.cl->length->value.integer,
+ gfc_integer_kinds[k].huge) <= 0)
+ {
+ HOST_WIDE_INT len
+ = gfc_mpz_get_hwi (sym->ts.u.cl->length->value.integer);
+
+ if (init->expr_type == EXPR_CONSTANT)
+ gfc_set_constant_character_len (len, init, -1);
+ else if (init->expr_type == EXPR_ARRAY)
+ {
+ gfc_constructor *c;
+
+ /* Build a new charlen to prevent simplification from
+ deleting the length before it is resolved. */
+ init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
+ init->ts.u.cl->length
+ = gfc_copy_expr (sym->ts.u.cl->length);
+
+ for (c = gfc_constructor_first (init->value.constructor);
+ c; c = gfc_constructor_next (c))
+ gfc_set_constant_character_len (len, c->expr, -1);
+ }
+ }
+ }
+ }
+
+ if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension && sym->as
+ && sym->as->rank && init->rank && init->rank != sym->as->rank)
+ {
+ gfc_error ("Rank mismatch of array at %L and its initializer "
+ "(%d/%d)", &sym->declared_at, sym->as->rank, init->rank);
+ return false;
+ }
+
+ /* If sym is implied-shape, set its upper bounds from init. */
+ if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension
+ && sym->as->type == AS_IMPLIED_SHAPE)
+ {
+ int dim;
+
+ if (init->rank == 0)
+ {
+ gfc_error ("Cannot initialize implied-shape array at %L"
+ " with scalar", &sym->declared_at);
+ return false;
+ }
+
+ /* The shape may be NULL for EXPR_ARRAY, set it. */
+ if (init->shape == NULL)
+ {
+ gcc_assert (init->expr_type == EXPR_ARRAY);
+ init->shape = gfc_get_shape (1);
+ if (!gfc_array_size (init, &init->shape[0]))
+ gfc_internal_error ("gfc_array_size failed");
+ }
+
+ for (dim = 0; dim < sym->as->rank; ++dim)
+ {
+ int k;
+ gfc_expr *e, *lower;
+
+ lower = sym->as->lower[dim];
+
+ /* If the lower bound is an array element from another
+ parameterized array, then it is marked with EXPR_VARIABLE and
+ is an initialization expression. Try to reduce it. */
+ if (lower->expr_type == EXPR_VARIABLE)
+ gfc_reduce_init_expr (lower);
+
+ if (lower->expr_type == EXPR_CONSTANT)
+ {
+ /* All dimensions must be without upper bound. */
+ gcc_assert (!sym->as->upper[dim]);
+
+ k = lower->ts.kind;
+ e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at);
+ mpz_add (e->value.integer, lower->value.integer,
+ init->shape[dim]);
+ mpz_sub_ui (e->value.integer, e->value.integer, 1);
+ sym->as->upper[dim] = e;
+ }
+ else
+ {
+ gfc_error ("Non-constant lower bound in implied-shape"
+ " declaration at %L", &lower->where);
+ return false;
+ }
+ }
+
+ sym->as->type = AS_EXPLICIT;
+ }
+
+ /* Ensure that explicit bounds are simplified. */
+ if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension
+ && sym->as->type == AS_EXPLICIT)
+ {
+ for (int dim = 0; dim < sym->as->rank; ++dim)
+ {
+ gfc_expr *e;
+
+ e = sym->as->lower[dim];
+ if (e->expr_type != EXPR_CONSTANT)
+ gfc_reduce_init_expr (e);
+
+ e = sym->as->upper[dim];
+ if (e->expr_type != EXPR_CONSTANT)
+ gfc_reduce_init_expr (e);
+ }
+ }
+
+ /* Need to check if the expression we initialized this
+ to was one of the iso_c_binding named constants. If so,
+ and we're a parameter (constant), let it be iso_c.
+ For example:
+ integer(c_int), parameter :: my_int = c_int
+ integer(my_int) :: my_int_2
+ If we mark my_int as iso_c (since we can see it's value
+ is equal to one of the named constants), then my_int_2
+ will be considered C interoperable. */
+ if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type))
+ {
+ sym->ts.is_iso_c |= init->ts.is_iso_c;
+ sym->ts.is_c_interop |= init->ts.is_c_interop;
+ /* attr bits needed for module files. */
+ sym->attr.is_iso_c |= init->ts.is_iso_c;
+ sym->attr.is_c_interop |= init->ts.is_c_interop;
+ if (init->ts.is_iso_c)
+ sym->ts.f90_type = init->ts.f90_type;
+ }
+
+ /* Add initializer. Make sure we keep the ranks sane. */
+ if (sym->attr.dimension && init->rank == 0)
+ {
+ mpz_t size;
+ gfc_expr *array;
+ int n;
+ if (sym->attr.flavor == FL_PARAMETER
+ && gfc_is_constant_expr (init)
+ && (init->expr_type == EXPR_CONSTANT
+ || init->expr_type == EXPR_STRUCTURE)
+ && spec_size (sym->as, &size)
+ && mpz_cmp_si (size, 0) > 0)
+ {
+ array = gfc_get_array_expr (init->ts.type, init->ts.kind,
+ &init->where);
+ if (init->ts.type == BT_DERIVED)
+ array->ts.u.derived = init->ts.u.derived;
+ for (n = 0; n < (int)mpz_get_si (size); n++)
+ gfc_constructor_append_expr (&array->value.constructor,
+ n == 0
+ ? init
+ : gfc_copy_expr (init),
+ &init->where);
+
+ array->shape = gfc_get_shape (sym->as->rank);
+ for (n = 0; n < sym->as->rank; n++)
+ spec_dimen_size (sym->as, n, &array->shape[n]);
+
+ init = array;
+ mpz_clear (size);
+ }
+ init->rank = sym->as->rank;
+ }
+
+ sym->value = init;
+ if (sym->attr.save == SAVE_NONE)
+ sym->attr.save = SAVE_IMPLICIT;
+ *initp = NULL;
+ }
+
+ return true;
+}
+
+
+/* Function called by variable_decl() that adds a name to a structure
+ being built. */
+
+static bool
+build_struct (const char *name, gfc_charlen *cl, gfc_expr **init,
+ gfc_array_spec **as)
+{
+ gfc_state_data *s;
+ gfc_component *c;
+
+ /* F03:C438/C439. If the current symbol is of the same derived type that we're
+ constructing, it must have the pointer attribute. */
+ if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
+ && current_ts.u.derived == gfc_current_block ()
+ && current_attr.pointer == 0)
+ {
+ if (current_attr.allocatable
+ && !gfc_notify_std(GFC_STD_F2008, "Component at %C "
+ "must have the POINTER attribute"))
+ {
+ return false;
+ }
+ else if (current_attr.allocatable == 0)
+ {
+ gfc_error ("Component at %C must have the POINTER attribute");
+ return false;
+ }
+ }
+
+ /* F03:C437. */
+ if (current_ts.type == BT_CLASS
+ && !(current_attr.pointer || current_attr.allocatable))
+ {
+ gfc_error ("Component %qs with CLASS at %C must be allocatable "
+ "or pointer", name);
+ return false;
+ }
+
+ if (gfc_current_block ()->attr.pointer && (*as)->rank != 0)
+ {
+ if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT)
+ {
+ gfc_error ("Array component of structure at %C must have explicit "
+ "or deferred shape");
+ return false;
+ }
+ }
+
+ /* If we are in a nested union/map definition, gfc_add_component will not
+ properly find repeated components because:
+ (i) gfc_add_component does a flat search, where components of unions
+ and maps are implicity chained so nested components may conflict.
+ (ii) Unions and maps are not linked as components of their parent
+ structures until after they are parsed.
+ For (i) we use gfc_find_component which searches recursively, and for (ii)
+ we search each block directly from the parse stack until we find the top
+ level structure. */
+
+ s = gfc_state_stack;
+ if (s->state == COMP_UNION || s->state == COMP_MAP)
+ {
+ while (s->state == COMP_UNION || gfc_comp_struct (s->state))
+ {
+ c = gfc_find_component (s->sym, name, true, true, NULL);
+ if (c != NULL)
+ {
+ gfc_error_now ("Component %qs at %C already declared at %L",
+ name, &c->loc);
+ return false;
+ }
+ /* Break after we've searched the entire chain. */
+ if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE)
+ break;
+ s = s->previous;
+ }
+ }
+
+ if (!gfc_add_component (gfc_current_block(), name, &c))
+ return false;
+
+ c->ts = current_ts;
+ if (c->ts.type == BT_CHARACTER)
+ c->ts.u.cl = cl;
+
+ if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED
+ && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER)
+ && saved_kind_expr != NULL)
+ c->kind_expr = gfc_copy_expr (saved_kind_expr);
+
+ c->attr = current_attr;
+
+ c->initializer = *init;
+ *init = NULL;
+
+ c->as = *as;
+ if (c->as != NULL)
+ {
+ if (c->as->corank)
+ c->attr.codimension = 1;
+ if (c->as->rank)
+ c->attr.dimension = 1;
+ }
+ *as = NULL;
+
+ gfc_apply_init (&c->ts, &c->attr, c->initializer);
+
+ /* Check array components. */
+ if (!c->attr.dimension)
+ goto scalar;
+
+ if (c->attr.pointer)
+ {
+ if (c->as->type != AS_DEFERRED)
+ {
+ gfc_error ("Pointer array component of structure at %C must have a "
+ "deferred shape");
+ return false;
+ }
+ }
+ else if (c->attr.allocatable)
+ {
+ if (c->as->type != AS_DEFERRED)
+ {
+ gfc_error ("Allocatable component of structure at %C must have a "
+ "deferred shape");
+ return false;
+ }
+ }
+ else
+ {
+ if (c->as->type != AS_EXPLICIT)
+ {
+ gfc_error ("Array component of structure at %C must have an "
+ "explicit shape");
+ return false;
+ }
+ }
+
+scalar:
+ if (c->ts.type == BT_CLASS)
+ return gfc_build_class_symbol (&c->ts, &c->attr, &c->as);
+
+ if (c->attr.pdt_kind || c->attr.pdt_len)
+ {
+ gfc_symbol *sym;
+ gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived,
+ 0, &sym);
+ if (sym == NULL)
+ {
+ gfc_error ("Type parameter %qs at %C has no corresponding entry "
+ "in the type parameter name list at %L",
+ c->name, &gfc_current_block ()->declared_at);
+ return false;
+ }
+ sym->ts = c->ts;
+ sym->attr.pdt_kind = c->attr.pdt_kind;
+ sym->attr.pdt_len = c->attr.pdt_len;
+ if (c->initializer)
+ sym->value = gfc_copy_expr (c->initializer);
+ sym->attr.flavor = FL_VARIABLE;
+ }
+
+ if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS)
+ && c->ts.u.derived && c->ts.u.derived->attr.pdt_template
+ && decl_type_param_list)
+ c->param_list = gfc_copy_actual_arglist (decl_type_param_list);
+
+ return true;
+}
+
+
+/* Match a 'NULL()', and possibly take care of some side effects. */
+
+match
+gfc_match_null (gfc_expr **result)
+{
+ gfc_symbol *sym;
+ match m, m2 = MATCH_NO;
+
+ if ((m = gfc_match (" null ( )")) == MATCH_ERROR)
+ return MATCH_ERROR;
+
+ if (m == MATCH_NO)
+ {
+ locus old_loc;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+
+ if ((m2 = gfc_match (" null (")) != MATCH_YES)
+ return m2;
+
+ old_loc = gfc_current_locus;
+ if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR)
+ return MATCH_ERROR;
+ if (m2 != MATCH_YES
+ && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR))
+ return MATCH_ERROR;
+ if (m2 == MATCH_NO)
+ {
+ gfc_current_locus = old_loc;
+ return MATCH_NO;
+ }
+ }
+
+ /* The NULL symbol now has to be/become an intrinsic function. */
+ if (gfc_get_symbol ("null", NULL, &sym))
+ {
+ gfc_error ("NULL() initialization at %C is ambiguous");
+ return MATCH_ERROR;
+ }
+
+ gfc_intrinsic_symbol (sym);
+
+ if (sym->attr.proc != PROC_INTRINSIC
+ && !(sym->attr.use_assoc && sym->attr.intrinsic)
+ && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL)
+ || !gfc_add_function (&sym->attr, sym->name, NULL)))
+ return MATCH_ERROR;
+
+ *result = gfc_get_null_expr (&gfc_current_locus);
+
+ /* Invalid per F2008, C512. */
+ if (m2 == MATCH_YES)
+ {
+ gfc_error ("NULL() initialization at %C may not have MOLD");
+ return MATCH_ERROR;
+ }
+
+ return MATCH_YES;
+}
+
+
+/* Match the initialization expr for a data pointer or procedure pointer. */
+
+static match
+match_pointer_init (gfc_expr **init, int procptr)
+{
+ match m;
+
+ if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state))
+ {
+ gfc_error ("Initialization of pointer at %C is not allowed in "
+ "a PURE procedure");
+ return MATCH_ERROR;
+ }
+ gfc_unset_implicit_pure (gfc_current_ns->proc_name);
+
+ /* Match NULL() initialization. */
+ m = gfc_match_null (init);
+ if (m != MATCH_NO)
+ return m;
+
+ /* Match non-NULL initialization. */
+ gfc_matching_ptr_assignment = !procptr;
+ gfc_matching_procptr_assignment = procptr;
+ m = gfc_match_rvalue (init);
+ gfc_matching_ptr_assignment = 0;
+ gfc_matching_procptr_assignment = 0;
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ else if (m == MATCH_NO)
+ {
+ gfc_error ("Error in pointer initialization at %C");
+ return MATCH_ERROR;
+ }
+
+ if (!procptr && !gfc_resolve_expr (*init))
+ return MATCH_ERROR;
+
+ if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer "
+ "initialization at %C"))
+ return MATCH_ERROR;
+
+ return MATCH_YES;
+}
+
+
+static bool
+check_function_name (char *name)
+{
+ /* In functions that have a RESULT variable defined, the function name always
+ refers to function calls. Therefore, the name is not allowed to appear in
+ specification statements. When checking this, be careful about
+ 'hidden' procedure pointer results ('ppr@'). */
+
+ if (gfc_current_state () == COMP_FUNCTION)
+ {
+ gfc_symbol *block = gfc_current_block ();
+ if (block && block->result && block->result != block
+ && strcmp (block->result->name, "ppr@") != 0
+ && strcmp (block->name, name) == 0)
+ {
+ gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C "
+ "from appearing in a specification statement",
+ block->result->name, &block->result->declared_at, name);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+
+/* Match a variable name with an optional initializer. When this
+ subroutine is called, a variable is expected to be parsed next.
+ Depending on what is happening at the moment, updates either the
+ symbol table or the current interface. */
+
+static match
+variable_decl (int elem)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ static unsigned int fill_id = 0;
+ gfc_expr *initializer, *char_len;
+ gfc_array_spec *as;
+ gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */
+ gfc_charlen *cl;
+ bool cl_deferred;
+ locus var_locus;
+ match m;
+ bool t;
+ gfc_symbol *sym;
+ char c;
+
+ initializer = NULL;
+ as = NULL;
+ cp_as = NULL;
+
+ /* When we get here, we've just matched a list of attributes and
+ maybe a type and a double colon. The next thing we expect to see
+ is the name of the symbol. */
+
+ /* If we are parsing a structure with legacy support, we allow the symbol
+ name to be '%FILL' which gives it an anonymous (inaccessible) name. */
+ m = MATCH_NO;
+ gfc_gobble_whitespace ();
+ c = gfc_peek_ascii_char ();
+ if (c == '%')
+ {
+ gfc_next_ascii_char (); /* Burn % character. */
+ m = gfc_match ("fill");
+ if (m == MATCH_YES)
+ {
+ if (gfc_current_state () != COMP_STRUCTURE)
+ {
+ if (flag_dec_structure)
+ gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL");
+ else
+ gfc_error ("%qs at %C is a DEC extension, enable with "
+ "%<-fdec-structure%>", "%FILL");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (attr_seen)
+ {
+ gfc_error ("%qs entity cannot have attributes at %C", "%FILL");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* %FILL components are given invalid fortran names. */
+ snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++);
+ }
+ else
+ {
+ gfc_error ("Invalid character %qc in variable name at %C", c);
+ return MATCH_ERROR;
+ }
+ }
+ else
+ {
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ goto cleanup;
+ }
+
+ var_locus = gfc_current_locus;
+
+ /* Now we could see the optional array spec. or character length. */
+ m = gfc_match_array_spec (&as, true, true);
+ if (m == MATCH_ERROR)
+ goto cleanup;
+
+ if (m == MATCH_NO)
+ as = gfc_copy_array_spec (current_as);
+ else if (current_as
+ && !merge_array_spec (current_as, as, true))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (flag_cray_pointer)
+ cp_as = gfc_copy_array_spec (as);
+
+ /* At this point, we know for sure if the symbol is PARAMETER and can thus
+ determine (and check) whether it can be implied-shape. If it
+ was parsed as assumed-size, change it because PARAMETERs cannot
+ be assumed-size.
+
+ An explicit-shape-array cannot appear under several conditions.
+ That check is done here as well. */
+ if (as)
+ {
+ if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER)
+ {
+ m = MATCH_ERROR;
+ gfc_error ("Non-PARAMETER symbol %qs at %L cannot be implied-shape",
+ name, &var_locus);
+ goto cleanup;
+ }
+
+ if (as->type == AS_ASSUMED_SIZE && as->rank == 1
+ && current_attr.flavor == FL_PARAMETER)
+ as->type = AS_IMPLIED_SHAPE;
+
+ if (as->type == AS_IMPLIED_SHAPE
+ && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L",
+ &var_locus))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ gfc_seen_div0 = false;
+
+ /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not
+ constant expressions shall appear only in a subprogram, derived
+ type definition, BLOCK construct, or interface body. */
+ if (as->type == AS_EXPLICIT
+ && gfc_current_state () != COMP_BLOCK
+ && gfc_current_state () != COMP_DERIVED
+ && gfc_current_state () != COMP_FUNCTION
+ && gfc_current_state () != COMP_INTERFACE
+ && gfc_current_state () != COMP_SUBROUTINE)
+ {
+ gfc_expr *e;
+ bool not_constant = false;
+
+ for (int i = 0; i < as->rank; i++)
+ {
+ e = gfc_copy_expr (as->lower[i]);
+ if (!gfc_resolve_expr (e) && gfc_seen_div0)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ gfc_simplify_expr (e, 0);
+ if (e && (e->expr_type != EXPR_CONSTANT))
+ {
+ not_constant = true;
+ break;
+ }
+ gfc_free_expr (e);
+
+ e = gfc_copy_expr (as->upper[i]);
+ if (!gfc_resolve_expr (e) && gfc_seen_div0)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ gfc_simplify_expr (e, 0);
+ if (e && (e->expr_type != EXPR_CONSTANT))
+ {
+ not_constant = true;
+ break;
+ }
+ gfc_free_expr (e);
+ }
+
+ if (not_constant && e->ts.type != BT_INTEGER)
+ {
+ gfc_error ("Explicit array shape at %C must be constant of "
+ "INTEGER type and not %s type",
+ gfc_basic_typename (e->ts.type));
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ if (not_constant)
+ {
+ gfc_error ("Explicit shaped array with nonconstant bounds at %C");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+ if (as->type == AS_EXPLICIT)
+ {
+ for (int i = 0; i < as->rank; i++)
+ {
+ gfc_expr *e, *n;
+ e = as->lower[i];
+ if (e->expr_type != EXPR_CONSTANT)
+ {
+ n = gfc_copy_expr (e);
+ if (!gfc_simplify_expr (n, 1) && gfc_seen_div0)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (n->expr_type == EXPR_CONSTANT)
+ gfc_replace_expr (e, n);
+ else
+ gfc_free_expr (n);
+ }
+ e = as->upper[i];
+ if (e->expr_type != EXPR_CONSTANT)
+ {
+ n = gfc_copy_expr (e);
+ if (!gfc_simplify_expr (n, 1) && gfc_seen_div0)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (n->expr_type == EXPR_CONSTANT)
+ gfc_replace_expr (e, n);
+ else
+ gfc_free_expr (n);
+ }
+ }
+ }
+ }
+
+ char_len = NULL;
+ cl = NULL;
+ cl_deferred = false;
+
+ if (current_ts.type == BT_CHARACTER)
+ {
+ switch (match_char_length (&char_len, &cl_deferred, false))
+ {
+ case MATCH_YES:
+ cl = gfc_new_charlen (gfc_current_ns, NULL);
+
+ cl->length = char_len;
+ break;
+
+ /* Non-constant lengths need to be copied after the first
+ element. Also copy assumed lengths. */
+ case MATCH_NO:
+ if (elem > 1
+ && (current_ts.u.cl->length == NULL
+ || current_ts.u.cl->length->expr_type != EXPR_CONSTANT))
+ {
+ cl = gfc_new_charlen (gfc_current_ns, NULL);
+ cl->length = gfc_copy_expr (current_ts.u.cl->length);
+ }
+ else
+ cl = current_ts.u.cl;
+
+ cl_deferred = current_ts.deferred;
+
+ break;
+
+ case MATCH_ERROR:
+ goto cleanup;
+ }
+ }
+
+ /* The dummy arguments and result of the abreviated form of MODULE
+ PROCEDUREs, used in SUBMODULES should not be redefined. */
+ if (gfc_current_ns->proc_name
+ && gfc_current_ns->proc_name->abr_modproc_decl)
+ {
+ gfc_find_symbol (name, gfc_current_ns, 1, &sym);
+ if (sym != NULL && (sym->attr.dummy || sym->attr.result))
+ {
+ m = MATCH_ERROR;
+ gfc_error ("%qs at %C is a redefinition of the declaration "
+ "in the corresponding interface for MODULE "
+ "PROCEDURE %qs", sym->name,
+ gfc_current_ns->proc_name->name);
+ goto cleanup;
+ }
+ }
+
+ /* %FILL components may not have initializers. */
+ if (startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES)
+ {
+ gfc_error ("%qs entity cannot have an initializer at %C", "%FILL");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* If this symbol has already shown up in a Cray Pointer declaration,
+ and this is not a component declaration,
+ then we want to set the type & bail out. */
+ if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ()))
+ {
+ gfc_find_symbol (name, gfc_current_ns, 0, &sym);
+ if (sym != NULL && sym->attr.cray_pointee)
+ {
+ m = MATCH_YES;
+ if (!gfc_add_type (sym, &current_ts, &gfc_current_locus))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* Check to see if we have an array specification. */
+ if (cp_as != NULL)
+ {
+ if (sym->as != NULL)
+ {
+ gfc_error ("Duplicate array spec for Cray pointee at %C");
+ gfc_free_array_spec (cp_as);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ else
+ {
+ if (!gfc_set_array_spec (sym, cp_as, &var_locus))
+ gfc_internal_error ("Cannot set pointee array spec.");
+
+ /* Fix the array spec. */
+ m = gfc_mod_pointee_as (sym->as);
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ }
+ }
+ goto cleanup;
+ }
+ else
+ {
+ gfc_free_array_spec (cp_as);
+ }
+ }
+
+ /* Procedure pointer as function result. */
+ if (gfc_current_state () == COMP_FUNCTION
+ && strcmp ("ppr@", gfc_current_block ()->name) == 0
+ && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0)
+ strcpy (name, "ppr@");
+
+ if (gfc_current_state () == COMP_FUNCTION
+ && strcmp (name, gfc_current_block ()->name) == 0
+ && gfc_current_block ()->result
+ && strcmp ("ppr@", gfc_current_block ()->result->name) == 0)
+ strcpy (name, "ppr@");
+
+ /* OK, we've successfully matched the declaration. Now put the
+ symbol in the current namespace, because it might be used in the
+ optional initialization expression for this symbol, e.g. this is
+ perfectly legal:
+
+ integer, parameter :: i = huge(i)
+
+ This is only true for parameters or variables of a basic type.
+ For components of derived types, it is not true, so we don't
+ create a symbol for those yet. If we fail to create the symbol,
+ bail out. */
+ if (!gfc_comp_struct (gfc_current_state ())
+ && !build_sym (name, cl, cl_deferred, &as, &var_locus))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (!check_function_name (name))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* We allow old-style initializations of the form
+ integer i /2/, j(4) /3*3, 1/
+ (if no colon has been seen). These are different from data
+ statements in that initializers are only allowed to apply to the
+ variable immediately preceding, i.e.
+ integer i, j /1, 2/
+ is not allowed. Therefore we have to do some work manually, that
+ could otherwise be left to the matchers for DATA statements. */
+
+ if (!colon_seen && gfc_match (" /") == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_GNU, "Old-style "
+ "initialization at %C"))
+ return MATCH_ERROR;
+
+ /* Allow old style initializations for components of STRUCTUREs and MAPs
+ but not components of derived types. */
+ else if (gfc_current_state () == COMP_DERIVED)
+ {
+ gfc_error ("Invalid old style initialization for derived type "
+ "component at %C");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* For structure components, read the initializer as a special
+ expression and let the rest of this function apply the initializer
+ as usual. */
+ else if (gfc_comp_struct (gfc_current_state ()))
+ {
+ m = match_clist_expr (&initializer, &current_ts, as);
+ if (m == MATCH_NO)
+ gfc_error ("Syntax error in old style initialization of %s at %C",
+ name);
+ if (m != MATCH_YES)
+ goto cleanup;
+ }
+
+ /* Otherwise we treat the old style initialization just like a
+ DATA declaration for the current variable. */
+ else
+ return match_old_style_init (name);
+ }
+
+ /* The double colon must be present in order to have initializers.
+ Otherwise the statement is ambiguous with an assignment statement. */
+ if (colon_seen)
+ {
+ if (gfc_match (" =>") == MATCH_YES)
+ {
+ if (!current_attr.pointer)
+ {
+ gfc_error ("Initialization at %C isn't for a pointer variable");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ m = match_pointer_init (&initializer, 0);
+ if (m != MATCH_YES)
+ goto cleanup;
+
+ /* The target of a pointer initialization must have the SAVE
+ attribute. A variable in PROGRAM, MODULE, or SUBMODULE scope
+ is implicit SAVEd. Explicitly, set the SAVE_IMPLICIT value. */
+ if (initializer->expr_type == EXPR_VARIABLE
+ && initializer->symtree->n.sym->attr.save == SAVE_NONE
+ && (gfc_current_state () == COMP_PROGRAM
+ || gfc_current_state () == COMP_MODULE
+ || gfc_current_state () == COMP_SUBMODULE))
+ initializer->symtree->n.sym->attr.save = SAVE_IMPLICIT;
+ }
+ else if (gfc_match_char ('=') == MATCH_YES)
+ {
+ if (current_attr.pointer)
+ {
+ gfc_error ("Pointer initialization at %C requires %<=>%>, "
+ "not %<=%>");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ m = gfc_match_init_expr (&initializer);
+ if (m == MATCH_NO)
+ {
+ gfc_error ("Expected an initialization expression at %C");
+ m = MATCH_ERROR;
+ }
+
+ if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL)
+ && !gfc_comp_struct (gfc_state_stack->state))
+ {
+ gfc_error ("Initialization of variable at %C is not allowed in "
+ "a PURE procedure");
+ m = MATCH_ERROR;
+ }
+
+ if (current_attr.flavor != FL_PARAMETER
+ && !gfc_comp_struct (gfc_state_stack->state))
+ gfc_unset_implicit_pure (gfc_current_ns->proc_name);
+
+ if (m != MATCH_YES)
+ goto cleanup;
+ }
+ }
+
+ if (initializer != NULL && current_attr.allocatable
+ && gfc_comp_struct (gfc_current_state ()))
+ {
+ gfc_error ("Initialization of allocatable component at %C is not "
+ "allowed");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (gfc_current_state () == COMP_DERIVED
+ && initializer && initializer->ts.type == BT_HOLLERITH)
+ {
+ gfc_error ("Initialization of structure component with a HOLLERITH "
+ "constant at %L is not allowed", &initializer->where);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (gfc_current_state () == COMP_DERIVED
+ && gfc_current_block ()->attr.pdt_template)
+ {
+ gfc_symbol *param;
+ gfc_find_symbol (name, gfc_current_block ()->f2k_derived,
+ 0, &param);
+ if (!param && (current_attr.pdt_kind || current_attr.pdt_len))
+ {
+ gfc_error ("The component with KIND or LEN attribute at %C does not "
+ "not appear in the type parameter list at %L",
+ &gfc_current_block ()->declared_at);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ else if (param && !(current_attr.pdt_kind || current_attr.pdt_len))
+ {
+ gfc_error ("The component at %C that appears in the type parameter "
+ "list at %L has neither the KIND nor LEN attribute",
+ &gfc_current_block ()->declared_at);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ else if (as && (current_attr.pdt_kind || current_attr.pdt_len))
+ {
+ gfc_error ("The component at %C which is a type parameter must be "
+ "a scalar");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ else if (param && initializer)
+ {
+ if (initializer->ts.type == BT_BOZ)
+ {
+ gfc_error ("BOZ literal constant at %L cannot appear as an "
+ "initializer", &initializer->where);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ param->value = gfc_copy_expr (initializer);
+ }
+ }
+
+ /* Before adding a possible initilizer, do a simple check for compatibility
+ of lhs and rhs types. Assigning a REAL value to a derived type is not a
+ good thing. */
+ if (current_ts.type == BT_DERIVED && initializer
+ && (gfc_numeric_ts (&initializer->ts)
+ || initializer->ts.type == BT_LOGICAL
+ || initializer->ts.type == BT_CHARACTER))
+ {
+ gfc_error ("Incompatible initialization between a derived type "
+ "entity and an entity with %qs type at %C",
+ gfc_typename (initializer));
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+
+ /* Add the initializer. Note that it is fine if initializer is
+ NULL here, because we sometimes also need to check if a
+ declaration *must* have an initialization expression. */
+ if (!gfc_comp_struct (gfc_current_state ()))
+ t = add_init_expr_to_sym (name, &initializer, &var_locus);
+ else
+ {
+ if (current_ts.type == BT_DERIVED
+ && !current_attr.pointer && !initializer)
+ initializer = gfc_default_initializer (&current_ts);
+ t = build_struct (name, cl, &initializer, &as);
+
+ /* If we match a nested structure definition we expect to see the
+ * body even if the variable declarations blow up, so we need to keep
+ * the structure declaration around. */
+ if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT)
+ gfc_commit_symbol (gfc_new_block);
+ }
+
+ m = (t) ? MATCH_YES : MATCH_ERROR;
+
+cleanup:
+ /* Free stuff up and return. */
+ gfc_seen_div0 = false;
+ gfc_free_expr (initializer);
+ gfc_free_array_spec (as);
+
+ return m;
+}
+
+
+/* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification.
+ This assumes that the byte size is equal to the kind number for
+ non-COMPLEX types, and equal to twice the kind number for COMPLEX. */
+
+static match
+gfc_match_old_kind_spec (gfc_typespec *ts)
+{
+ match m;
+ int original_kind;
+
+ if (gfc_match_char ('*') != MATCH_YES)
+ return MATCH_NO;
+
+ m = gfc_match_small_literal_int (&ts->kind, NULL);
+ if (m != MATCH_YES)
+ return MATCH_ERROR;
+
+ original_kind = ts->kind;
+
+ /* Massage the kind numbers for complex types. */
+ if (ts->type == BT_COMPLEX)
+ {
+ if (ts->kind % 2)
+ {
+ gfc_error ("Old-style type declaration %s*%d not supported at %C",
+ gfc_basic_typename (ts->type), original_kind);
+ return MATCH_ERROR;
+ }
+ ts->kind /= 2;
+
+ }
+
+ if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8)
+ ts->kind = 8;
+
+ if (ts->type == BT_REAL || ts->type == BT_COMPLEX)
+ {
+ if (ts->kind == 4)
+ {
+ if (flag_real4_kind == 8)
+ ts->kind = 8;
+ if (flag_real4_kind == 10)
+ ts->kind = 10;
+ if (flag_real4_kind == 16)
+ ts->kind = 16;
+ }
+ else if (ts->kind == 8)
+ {
+ if (flag_real8_kind == 4)
+ ts->kind = 4;
+ if (flag_real8_kind == 10)
+ ts->kind = 10;
+ if (flag_real8_kind == 16)
+ ts->kind = 16;
+ }
+ }
+
+ if (gfc_validate_kind (ts->type, ts->kind, true) < 0)
+ {
+ gfc_error ("Old-style type declaration %s*%d not supported at %C",
+ gfc_basic_typename (ts->type), original_kind);
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_notify_std (GFC_STD_GNU,
+ "Nonstandard type declaration %s*%d at %C",
+ gfc_basic_typename(ts->type), original_kind))
+ return MATCH_ERROR;
+
+ return MATCH_YES;
+}
+
+
+/* Match a kind specification. Since kinds are generally optional, we
+ usually return MATCH_NO if something goes wrong. If a "kind="
+ string is found, then we know we have an error. */
+
+match
+gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only)
+{
+ locus where, loc;
+ gfc_expr *e;
+ match m, n;
+ char c;
+
+ m = MATCH_NO;
+ n = MATCH_YES;
+ e = NULL;
+ saved_kind_expr = NULL;
+
+ where = loc = gfc_current_locus;
+
+ if (kind_expr_only)
+ goto kind_expr;
+
+ if (gfc_match_char ('(') == MATCH_NO)
+ return MATCH_NO;
+
+ /* Also gobbles optional text. */
+ if (gfc_match (" kind = ") == MATCH_YES)
+ m = MATCH_ERROR;
+
+ loc = gfc_current_locus;
+
+kind_expr:
+
+ n = gfc_match_init_expr (&e);
+
+ if (gfc_derived_parameter_expr (e))
+ {
+ ts->kind = 0;
+ saved_kind_expr = gfc_copy_expr (e);
+ goto close_brackets;
+ }
+
+ if (n != MATCH_YES)
+ {
+ if (gfc_matching_function)
+ {
+ /* The function kind expression might include use associated or
+ imported parameters and try again after the specification
+ expressions..... */
+ if (gfc_match_char (')') != MATCH_YES)
+ {
+ gfc_error ("Missing right parenthesis at %C");
+ m = MATCH_ERROR;
+ goto no_match;
+ }
+
+ gfc_free_expr (e);
+ gfc_undo_symbols ();
+ return MATCH_YES;
+ }
+ else
+ {
+ /* ....or else, the match is real. */
+ if (n == MATCH_NO)
+ gfc_error ("Expected initialization expression at %C");
+ if (n != MATCH_YES)
+ return MATCH_ERROR;
+ }
+ }
+
+ if (e->rank != 0)
+ {
+ gfc_error ("Expected scalar initialization expression at %C");
+ m = MATCH_ERROR;
+ goto no_match;
+ }
+
+ if (gfc_extract_int (e, &ts->kind, 1))
+ {
+ m = MATCH_ERROR;
+ goto no_match;
+ }
+
+ /* Before throwing away the expression, let's see if we had a
+ C interoperable kind (and store the fact). */
+ if (e->ts.is_c_interop == 1)
+ {
+ /* Mark this as C interoperable if being declared with one
+ of the named constants from iso_c_binding. */
+ ts->is_c_interop = e->ts.is_iso_c;
+ ts->f90_type = e->ts.f90_type;
+ if (e->symtree)
+ ts->interop_kind = e->symtree->n.sym;
+ }
+
+ gfc_free_expr (e);
+ e = NULL;
+
+ /* Ignore errors to this point, if we've gotten here. This means
+ we ignore the m=MATCH_ERROR from above. */
+ if (gfc_validate_kind (ts->type, ts->kind, true) < 0)
+ {
+ gfc_error ("Kind %d not supported for type %s at %C", ts->kind,
+ gfc_basic_typename (ts->type));
+ gfc_current_locus = where;
+ return MATCH_ERROR;
+ }
+
+ /* Warn if, e.g., c_int is used for a REAL variable, but not
+ if, e.g., c_double is used for COMPLEX as the standard
+ explicitly says that the kind type parameter for complex and real
+ variable is the same, i.e. c_float == c_float_complex. */
+ if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type
+ && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX)
+ || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL)))
+ gfc_warning_now (0, "C kind type parameter is for type %s but type at %L "
+ "is %s", gfc_basic_typename (ts->f90_type), &where,
+ gfc_basic_typename (ts->type));
+
+close_brackets:
+
+ gfc_gobble_whitespace ();
+ if ((c = gfc_next_ascii_char ()) != ')'
+ && (ts->type != BT_CHARACTER || c != ','))
+ {
+ if (ts->type == BT_CHARACTER)
+ gfc_error ("Missing right parenthesis or comma at %C");
+ else
+ gfc_error ("Missing right parenthesis at %C");
+ m = MATCH_ERROR;
+ }
+ else
+ /* All tests passed. */
+ m = MATCH_YES;
+
+ if(m == MATCH_ERROR)
+ gfc_current_locus = where;
+
+ if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8)
+ ts->kind = 8;
+
+ if (ts->type == BT_REAL || ts->type == BT_COMPLEX)
+ {
+ if (ts->kind == 4)
+ {
+ if (flag_real4_kind == 8)
+ ts->kind = 8;
+ if (flag_real4_kind == 10)
+ ts->kind = 10;
+ if (flag_real4_kind == 16)
+ ts->kind = 16;
+ }
+ else if (ts->kind == 8)
+ {
+ if (flag_real8_kind == 4)
+ ts->kind = 4;
+ if (flag_real8_kind == 10)
+ ts->kind = 10;
+ if (flag_real8_kind == 16)
+ ts->kind = 16;
+ }
+ }
+
+ /* Return what we know from the test(s). */
+ return m;
+
+no_match:
+ gfc_free_expr (e);
+ gfc_current_locus = where;
+ return m;
+}
+
+
+static match
+match_char_kind (int * kind, int * is_iso_c)
+{
+ locus where;
+ gfc_expr *e;
+ match m, n;
+ bool fail;
+
+ m = MATCH_NO;
+ e = NULL;
+ where = gfc_current_locus;
+
+ n = gfc_match_init_expr (&e);
+
+ if (n != MATCH_YES && gfc_matching_function)
+ {
+ /* The expression might include use-associated or imported
+ parameters and try again after the specification
+ expressions. */
+ gfc_free_expr (e);
+ gfc_undo_symbols ();
+ return MATCH_YES;
+ }
+
+ if (n == MATCH_NO)
+ gfc_error ("Expected initialization expression at %C");
+ if (n != MATCH_YES)
+ return MATCH_ERROR;
+
+ if (e->rank != 0)
+ {
+ gfc_error ("Expected scalar initialization expression at %C");
+ m = MATCH_ERROR;
+ goto no_match;
+ }
+
+ if (gfc_derived_parameter_expr (e))
+ {
+ saved_kind_expr = e;
+ *kind = 0;
+ return MATCH_YES;
+ }
+
+ fail = gfc_extract_int (e, kind, 1);
+ *is_iso_c = e->ts.is_iso_c;
+ if (fail)
+ {
+ m = MATCH_ERROR;
+ goto no_match;
+ }
+
+ gfc_free_expr (e);
+
+ /* Ignore errors to this point, if we've gotten here. This means
+ we ignore the m=MATCH_ERROR from above. */
+ if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0)
+ {
+ gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind);
+ m = MATCH_ERROR;
+ }
+ else
+ /* All tests passed. */
+ m = MATCH_YES;
+
+ if (m == MATCH_ERROR)
+ gfc_current_locus = where;
+
+ /* Return what we know from the test(s). */
+ return m;
+
+no_match:
+ gfc_free_expr (e);
+ gfc_current_locus = where;
+ return m;
+}
+
+
+/* Match the various kind/length specifications in a CHARACTER
+ declaration. We don't return MATCH_NO. */
+
+match
+gfc_match_char_spec (gfc_typespec *ts)
+{
+ int kind, seen_length, is_iso_c;
+ gfc_charlen *cl;
+ gfc_expr *len;
+ match m;
+ bool deferred;
+
+ len = NULL;
+ seen_length = 0;
+ kind = 0;
+ is_iso_c = 0;
+ deferred = false;
+
+ /* Try the old-style specification first. */
+ old_char_selector = 0;
+
+ m = match_char_length (&len, &deferred, true);
+ if (m != MATCH_NO)
+ {
+ if (m == MATCH_YES)
+ old_char_selector = 1;
+ seen_length = 1;
+ goto done;
+ }
+
+ m = gfc_match_char ('(');
+ if (m != MATCH_YES)
+ {
+ m = MATCH_YES; /* Character without length is a single char. */
+ goto done;
+ }
+
+ /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */
+ if (gfc_match (" kind =") == MATCH_YES)
+ {
+ m = match_char_kind (&kind, &is_iso_c);
+
+ if (m == MATCH_ERROR)
+ goto done;
+ if (m == MATCH_NO)
+ goto syntax;
+
+ if (gfc_match (" , len =") == MATCH_NO)
+ goto rparen;
+
+ m = char_len_param_value (&len, &deferred);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ goto done;
+ seen_length = 1;
+
+ goto rparen;
+ }
+
+ /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */
+ if (gfc_match (" len =") == MATCH_YES)
+ {
+ m = char_len_param_value (&len, &deferred);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ goto done;
+ seen_length = 1;
+
+ if (gfc_match_char (')') == MATCH_YES)
+ goto done;
+
+ if (gfc_match (" , kind =") != MATCH_YES)
+ goto syntax;
+
+ if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR)
+ goto done;
+
+ goto rparen;
+ }
+
+ /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */
+ m = char_len_param_value (&len, &deferred);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ goto done;
+ seen_length = 1;
+
+ m = gfc_match_char (')');
+ if (m == MATCH_YES)
+ goto done;
+
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+
+ gfc_match (" kind ="); /* Gobble optional text. */
+
+ m = match_char_kind (&kind, &is_iso_c);
+ if (m == MATCH_ERROR)
+ goto done;
+ if (m == MATCH_NO)
+ goto syntax;
+
+rparen:
+ /* Require a right-paren at this point. */
+ m = gfc_match_char (')');
+ if (m == MATCH_YES)
+ goto done;
+
+syntax:
+ gfc_error ("Syntax error in CHARACTER declaration at %C");
+ m = MATCH_ERROR;
+ gfc_free_expr (len);
+ return m;
+
+done:
+ /* Deal with character functions after USE and IMPORT statements. */
+ if (gfc_matching_function)
+ {
+ gfc_free_expr (len);
+ gfc_undo_symbols ();
+ return MATCH_YES;
+ }
+
+ if (m != MATCH_YES)
+ {
+ gfc_free_expr (len);
+ return m;
+ }
+
+ /* Do some final massaging of the length values. */
+ cl = gfc_new_charlen (gfc_current_ns, NULL);
+
+ if (seen_length == 0)
+ cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1);
+ else
+ {
+ /* If gfortran ends up here, then len may be reducible to a constant.
+ Try to do that here. If it does not reduce, simply assign len to
+ charlen. A complication occurs with user-defined generic functions,
+ which are not resolved. Use a private namespace to deal with
+ generic functions. */
+
+ if (len && len->expr_type != EXPR_CONSTANT)
+ {
+ gfc_namespace *old_ns;
+ gfc_expr *e;
+
+ old_ns = gfc_current_ns;
+ gfc_current_ns = gfc_get_namespace (NULL, 0);
+
+ e = gfc_copy_expr (len);
+ gfc_push_suppress_errors ();
+ gfc_reduce_init_expr (e);
+ gfc_pop_suppress_errors ();
+ if (e->expr_type == EXPR_CONSTANT)
+ {
+ gfc_replace_expr (len, e);
+ if (mpz_cmp_si (len->value.integer, 0) < 0)
+ mpz_set_ui (len->value.integer, 0);
+ }
+ else
+ gfc_free_expr (e);
+
+ gfc_free_namespace (gfc_current_ns);
+ gfc_current_ns = old_ns;
+ }
+
+ cl->length = len;
+ }
+
+ ts->u.cl = cl;
+ ts->kind = kind == 0 ? gfc_default_character_kind : kind;
+ ts->deferred = deferred;
+
+ /* We have to know if it was a C interoperable kind so we can
+ do accurate type checking of bind(c) procs, etc. */
+ if (kind != 0)
+ /* Mark this as C interoperable if being declared with one
+ of the named constants from iso_c_binding. */
+ ts->is_c_interop = is_iso_c;
+ else if (len != NULL)
+ /* Here, we might have parsed something such as: character(c_char)
+ In this case, the parsing code above grabs the c_char when
+ looking for the length (line 1690, roughly). it's the last
+ testcase for parsing the kind params of a character variable.
+ However, it's not actually the length. this seems like it
+ could be an error.
+ To see if the user used a C interop kind, test the expr
+ of the so called length, and see if it's C interoperable. */
+ ts->is_c_interop = len->ts.is_iso_c;
+
+ return MATCH_YES;
+}
+
+
+/* Matches a RECORD declaration. */
+
+static match
+match_record_decl (char *name)
+{
+ locus old_loc;
+ old_loc = gfc_current_locus;
+ match m;
+
+ m = gfc_match (" record /");
+ if (m == MATCH_YES)
+ {
+ if (!flag_dec_structure)
+ {
+ gfc_current_locus = old_loc;
+ gfc_error ("RECORD at %C is an extension, enable it with "
+ "%<-fdec-structure%>");
+ return MATCH_ERROR;
+ }
+ m = gfc_match (" %n/", name);
+ if (m == MATCH_YES)
+ return MATCH_YES;
+ }
+
+ gfc_current_locus = old_loc;
+ if (flag_dec_structure
+ && (gfc_match (" record% ") == MATCH_YES
+ || gfc_match (" record%t") == MATCH_YES))
+ gfc_error ("Structure name expected after RECORD at %C");
+ if (m == MATCH_NO)
+ return MATCH_NO;
+
+ return MATCH_ERROR;
+}
+
+
+/* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source
+ of expressions to substitute into the possibly parameterized expression
+ 'e'. Using a list is inefficient but should not be too bad since the
+ number of type parameters is not likely to be large. */
+static bool
+insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED,
+ int* f)
+{
+ gfc_actual_arglist *param;
+ gfc_expr *copy;
+
+ if (e->expr_type != EXPR_VARIABLE)
+ return false;
+
+ gcc_assert (e->symtree);
+ if (e->symtree->n.sym->attr.pdt_kind
+ || (*f != 0 && e->symtree->n.sym->attr.pdt_len))
+ {
+ for (param = type_param_spec_list; param; param = param->next)
+ if (strcmp (e->symtree->n.sym->name, param->name) == 0)
+ break;
+
+ if (param)
+ {
+ copy = gfc_copy_expr (param->expr);
+ *e = *copy;
+ free (copy);
+ }
+ }
+
+ return false;
+}
+
+
+static bool
+gfc_insert_kind_parameter_exprs (gfc_expr *e)
+{
+ return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0);
+}
+
+
+bool
+gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list)
+{
+ gfc_actual_arglist *old_param_spec_list = type_param_spec_list;
+ type_param_spec_list = param_list;
+ bool res = gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1);
+ type_param_spec_list = old_param_spec_list;
+ return res;
+}
+
+/* Determines the instance of a parameterized derived type to be used by
+ matching determining the values of the kind parameters and using them
+ in the name of the instance. If the instance exists, it is used, otherwise
+ a new derived type is created. */
+match
+gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym,
+ gfc_actual_arglist **ext_param_list)
+{
+ /* The PDT template symbol. */
+ gfc_symbol *pdt = *sym;
+ /* The symbol for the parameter in the template f2k_namespace. */
+ gfc_symbol *param;
+ /* The hoped for instance of the PDT. */
+ gfc_symbol *instance;
+ /* The list of parameters appearing in the PDT declaration. */
+ gfc_formal_arglist *type_param_name_list;
+ /* Used to store the parameter specification list during recursive calls. */
+ gfc_actual_arglist *old_param_spec_list;
+ /* Pointers to the parameter specification being used. */
+ gfc_actual_arglist *actual_param;
+ gfc_actual_arglist *tail = NULL;
+ /* Used to build up the name of the PDT instance. The prefix uses 4
+ characters and each KIND parameter 2 more. Allow 8 of the latter. */
+ char name[GFC_MAX_SYMBOL_LEN + 21];
+
+ bool name_seen = (param_list == NULL);
+ bool assumed_seen = false;
+ bool deferred_seen = false;
+ bool spec_error = false;
+ int kind_value, i;
+ gfc_expr *kind_expr;
+ gfc_component *c1, *c2;
+ match m;
+
+ type_param_spec_list = NULL;
+
+ type_param_name_list = pdt->formal;
+ actual_param = param_list;
+ sprintf (name, "Pdt%s", pdt->name);
+
+ /* Run through the parameter name list and pick up the actual
+ parameter values or use the default values in the PDT declaration. */
+ for (; type_param_name_list;
+ type_param_name_list = type_param_name_list->next)
+ {
+ if (actual_param && actual_param->spec_type != SPEC_EXPLICIT)
+ {
+ if (actual_param->spec_type == SPEC_ASSUMED)
+ spec_error = deferred_seen;
+ else
+ spec_error = assumed_seen;
+
+ if (spec_error)
+ {
+ gfc_error ("The type parameter spec list at %C cannot contain "
+ "both ASSUMED and DEFERRED parameters");
+ goto error_return;
+ }
+ }
+
+ if (actual_param && actual_param->name)
+ name_seen = true;
+ param = type_param_name_list->sym;
+
+ if (!param || !param->name)
+ continue;
+
+ c1 = gfc_find_component (pdt, param->name, false, true, NULL);
+ /* An error should already have been thrown in resolve.c
+ (resolve_fl_derived0). */
+ if (!pdt->attr.use_assoc && !c1)
+ goto error_return;
+
+ kind_expr = NULL;
+ if (!name_seen)
+ {
+ if (!actual_param && !(c1 && c1->initializer))
+ {
+ gfc_error ("The type parameter spec list at %C does not contain "
+ "enough parameter expressions");
+ goto error_return;
+ }
+ else if (!actual_param && c1 && c1->initializer)
+ kind_expr = gfc_copy_expr (c1->initializer);
+ else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT)
+ kind_expr = gfc_copy_expr (actual_param->expr);
+ }
+ else
+ {
+ actual_param = param_list;
+ for (;actual_param; actual_param = actual_param->next)
+ if (actual_param->name
+ && strcmp (actual_param->name, param->name) == 0)
+ break;
+ if (actual_param && actual_param->spec_type == SPEC_EXPLICIT)
+ kind_expr = gfc_copy_expr (actual_param->expr);
+ else
+ {
+ if (c1->initializer)
+ kind_expr = gfc_copy_expr (c1->initializer);
+ else if (!(actual_param && param->attr.pdt_len))
+ {
+ gfc_error ("The derived parameter %qs at %C does not "
+ "have a default value", param->name);
+ goto error_return;
+ }
+ }
+ }
+
+ /* Store the current parameter expressions in a temporary actual
+ arglist 'list' so that they can be substituted in the corresponding
+ expressions in the PDT instance. */
+ if (type_param_spec_list == NULL)
+ {
+ type_param_spec_list = gfc_get_actual_arglist ();
+ tail = type_param_spec_list;
+ }
+ else
+ {
+ tail->next = gfc_get_actual_arglist ();
+ tail = tail->next;
+ }
+ tail->name = param->name;
+
+ if (kind_expr)
+ {
+ /* Try simplification even for LEN expressions. */
+ bool ok;
+ gfc_resolve_expr (kind_expr);
+ ok = gfc_simplify_expr (kind_expr, 1);
+ /* Variable expressions seem to default to BT_PROCEDURE.
+ TODO find out why this is and fix it. */
+ if (kind_expr->ts.type != BT_INTEGER
+ && kind_expr->ts.type != BT_PROCEDURE)
+ {
+ gfc_error ("The parameter expression at %C must be of "
+ "INTEGER type and not %s type",
+ gfc_basic_typename (kind_expr->ts.type));
+ goto error_return;
+ }
+ if (kind_expr->ts.type == BT_INTEGER && !ok)
+ {
+ gfc_error ("The parameter expression at %C does not "
+ "simplify to an INTEGER constant");
+ goto error_return;
+ }
+
+ tail->expr = gfc_copy_expr (kind_expr);
+ }
+
+ if (actual_param)
+ tail->spec_type = actual_param->spec_type;
+
+ if (!param->attr.pdt_kind)
+ {
+ if (!name_seen && actual_param)
+ actual_param = actual_param->next;
+ if (kind_expr)
+ {
+ gfc_free_expr (kind_expr);
+ kind_expr = NULL;
+ }
+ continue;
+ }
+
+ if (actual_param
+ && (actual_param->spec_type == SPEC_ASSUMED
+ || actual_param->spec_type == SPEC_DEFERRED))
+ {
+ gfc_error ("The KIND parameter %qs at %C cannot either be "
+ "ASSUMED or DEFERRED", param->name);
+ goto error_return;
+ }
+
+ if (!kind_expr || !gfc_is_constant_expr (kind_expr))
+ {
+ gfc_error ("The value for the KIND parameter %qs at %C does not "
+ "reduce to a constant expression", param->name);
+ goto error_return;
+ }
+
+ gfc_extract_int (kind_expr, &kind_value);
+ sprintf (name + strlen (name), "_%d", kind_value);
+
+ if (!name_seen && actual_param)
+ actual_param = actual_param->next;
+ gfc_free_expr (kind_expr);
+ }
+
+ if (!name_seen && actual_param)
+ {
+ gfc_error ("The type parameter spec list at %C contains too many "
+ "parameter expressions");
+ goto error_return;
+ }
+
+ /* Now we search for the PDT instance 'name'. If it doesn't exist, we
+ build it, using 'pdt' as a template. */
+ if (gfc_get_symbol (name, pdt->ns, &instance))
+ {
+ gfc_error ("Parameterized derived type at %C is ambiguous");
+ goto error_return;
+ }
+
+ m = MATCH_YES;
+
+ if (instance->attr.flavor == FL_DERIVED
+ && instance->attr.pdt_type)
+ {
+ instance->refs++;
+ if (ext_param_list)
+ *ext_param_list = type_param_spec_list;
+ *sym = instance;
+ gfc_commit_symbols ();
+ return m;
+ }
+
+ /* Start building the new instance of the parameterized type. */
+ gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at);
+ instance->attr.pdt_template = 0;
+ instance->attr.pdt_type = 1;
+ instance->declared_at = gfc_current_locus;
+
+ /* Add the components, replacing the parameters in all expressions
+ with the expressions for their values in 'type_param_spec_list'. */
+ c1 = pdt->components;
+ tail = type_param_spec_list;
+ for (; c1; c1 = c1->next)
+ {
+ gfc_add_component (instance, c1->name, &c2);
+
+ c2->ts = c1->ts;
+ c2->attr = c1->attr;
+
+ /* The order of declaration of the type_specs might not be the
+ same as that of the components. */
+ if (c1->attr.pdt_kind || c1->attr.pdt_len)
+ {
+ for (tail = type_param_spec_list; tail; tail = tail->next)
+ if (strcmp (c1->name, tail->name) == 0)
+ break;
+ }
+
+ /* Deal with type extension by recursively calling this function
+ to obtain the instance of the extended type. */
+ if (gfc_current_state () != COMP_DERIVED
+ && c1 == pdt->components
+ && (c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS)
+ && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template
+ && gfc_get_derived_super_type (*sym) == c2->ts.u.derived)
+ {
+ gfc_formal_arglist *f;
+
+ old_param_spec_list = type_param_spec_list;
+
+ /* Obtain a spec list appropriate to the extended type..*/
+ actual_param = gfc_copy_actual_arglist (type_param_spec_list);
+ type_param_spec_list = actual_param;
+ for (f = c1->ts.u.derived->formal; f && f->next; f = f->next)
+ actual_param = actual_param->next;
+ if (actual_param)
+ {
+ gfc_free_actual_arglist (actual_param->next);
+ actual_param->next = NULL;
+ }
+
+ /* Now obtain the PDT instance for the extended type. */
+ c2->param_list = type_param_spec_list;
+ m = gfc_get_pdt_instance (type_param_spec_list, &c2->ts.u.derived,
+ NULL);
+ type_param_spec_list = old_param_spec_list;
+
+ c2->ts.u.derived->refs++;
+ gfc_set_sym_referenced (c2->ts.u.derived);
+
+ /* Set extension level. */
+ if (c2->ts.u.derived->attr.extension == 255)
+ {
+ /* Since the extension field is 8 bit wide, we can only have
+ up to 255 extension levels. */
+ gfc_error ("Maximum extension level reached with type %qs at %L",
+ c2->ts.u.derived->name,
+ &c2->ts.u.derived->declared_at);
+ goto error_return;
+ }
+ instance->attr.extension = c2->ts.u.derived->attr.extension + 1;
+
+ continue;
+ }
+
+ /* Set the component kind using the parameterized expression. */
+ if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER)
+ && c1->kind_expr != NULL)
+ {
+ gfc_expr *e = gfc_copy_expr (c1->kind_expr);
+ gfc_insert_kind_parameter_exprs (e);
+ gfc_simplify_expr (e, 1);
+ gfc_extract_int (e, &c2->ts.kind);
+ gfc_free_expr (e);
+ if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0)
+ {
+ gfc_error ("Kind %d not supported for type %s at %C",
+ c2->ts.kind, gfc_basic_typename (c2->ts.type));
+ goto error_return;
+ }
+ }
+
+ /* Similarly, set the string length if parameterized. */
+ if (c1->ts.type == BT_CHARACTER
+ && c1->ts.u.cl->length
+ && gfc_derived_parameter_expr (c1->ts.u.cl->length))
+ {
+ gfc_expr *e;
+ e = gfc_copy_expr (c1->ts.u.cl->length);
+ gfc_insert_kind_parameter_exprs (e);
+ gfc_simplify_expr (e, 1);
+ c2->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
+ c2->ts.u.cl->length = e;
+ c2->attr.pdt_string = 1;
+ }
+
+ /* Set up either the KIND/LEN initializer, if constant,
+ or the parameterized expression. Use the template
+ initializer if one is not already set in this instance. */
+ if (c2->attr.pdt_kind || c2->attr.pdt_len)
+ {
+ if (tail && tail->expr && gfc_is_constant_expr (tail->expr))
+ c2->initializer = gfc_copy_expr (tail->expr);
+ else if (tail && tail->expr)
+ {
+ c2->param_list = gfc_get_actual_arglist ();
+ c2->param_list->name = tail->name;
+ c2->param_list->expr = gfc_copy_expr (tail->expr);
+ c2->param_list->next = NULL;
+ }
+
+ if (!c2->initializer && c1->initializer)
+ c2->initializer = gfc_copy_expr (c1->initializer);
+ }
+
+ /* Copy the array spec. */
+ c2->as = gfc_copy_array_spec (c1->as);
+ if (c1->ts.type == BT_CLASS)
+ CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as);
+
+ /* Determine if an array spec is parameterized. If so, substitute
+ in the parameter expressions for the bounds and set the pdt_array
+ attribute. Notice that this attribute must be unconditionally set
+ if this is an array of parameterized character length. */
+ if (c1->as && c1->as->type == AS_EXPLICIT)
+ {
+ bool pdt_array = false;
+
+ /* Are the bounds of the array parameterized? */
+ for (i = 0; i < c1->as->rank; i++)
+ {
+ if (gfc_derived_parameter_expr (c1->as->lower[i]))
+ pdt_array = true;
+ if (gfc_derived_parameter_expr (c1->as->upper[i]))
+ pdt_array = true;
+ }
+
+ /* If they are, free the expressions for the bounds and
+ replace them with the template expressions with substitute
+ values. */
+ for (i = 0; pdt_array && i < c1->as->rank; i++)
+ {
+ gfc_expr *e;
+ e = gfc_copy_expr (c1->as->lower[i]);
+ gfc_insert_kind_parameter_exprs (e);
+ gfc_simplify_expr (e, 1);
+ gfc_free_expr (c2->as->lower[i]);
+ c2->as->lower[i] = e;
+ e = gfc_copy_expr (c1->as->upper[i]);
+ gfc_insert_kind_parameter_exprs (e);
+ gfc_simplify_expr (e, 1);
+ gfc_free_expr (c2->as->upper[i]);
+ c2->as->upper[i] = e;
+ }
+ c2->attr.pdt_array = pdt_array ? 1 : c2->attr.pdt_string;
+ if (c1->initializer)
+ {
+ c2->initializer = gfc_copy_expr (c1->initializer);
+ gfc_insert_kind_parameter_exprs (c2->initializer);
+ gfc_simplify_expr (c2->initializer, 1);
+ }
+ }
+
+ /* Recurse into this function for PDT components. */
+ if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS)
+ && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template)
+ {
+ gfc_actual_arglist *params;
+ /* The component in the template has a list of specification
+ expressions derived from its declaration. */
+ params = gfc_copy_actual_arglist (c1->param_list);
+ actual_param = params;
+ /* Substitute the template parameters with the expressions
+ from the specification list. */
+ for (;actual_param; actual_param = actual_param->next)
+ gfc_insert_parameter_exprs (actual_param->expr,
+ type_param_spec_list);
+
+ /* Now obtain the PDT instance for the component. */
+ old_param_spec_list = type_param_spec_list;
+ m = gfc_get_pdt_instance (params, &c2->ts.u.derived, NULL);
+ type_param_spec_list = old_param_spec_list;
+
+ c2->param_list = params;
+ if (!(c2->attr.pointer || c2->attr.allocatable))
+ c2->initializer = gfc_default_initializer (&c2->ts);
+
+ if (c2->attr.allocatable)
+ instance->attr.alloc_comp = 1;
+ }
+ }
+
+ gfc_commit_symbol (instance);
+ if (ext_param_list)
+ *ext_param_list = type_param_spec_list;
+ *sym = instance;
+ return m;
+
+error_return:
+ gfc_free_actual_arglist (type_param_spec_list);
+ return MATCH_ERROR;
+}
+
+
+/* Match a legacy nonstandard BYTE type-spec. */
+
+static match
+match_byte_typespec (gfc_typespec *ts)
+{
+ if (gfc_match (" byte") == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C"))
+ return MATCH_ERROR;
+
+ if (gfc_current_form == FORM_FREE)
+ {
+ char c = gfc_peek_ascii_char ();
+ if (!gfc_is_whitespace (c) && c != ',')
+ return MATCH_NO;
+ }
+
+ if (gfc_validate_kind (BT_INTEGER, 1, true) < 0)
+ {
+ gfc_error ("BYTE type used at %C "
+ "is not available on the target machine");
+ return MATCH_ERROR;
+ }
+
+ ts->type = BT_INTEGER;
+ ts->kind = 1;
+ return MATCH_YES;
+ }
+ return MATCH_NO;
+}
+
+
+/* Matches a declaration-type-spec (F03:R502). If successful, sets the ts
+ structure to the matched specification. This is necessary for FUNCTION and
+ IMPLICIT statements.
+
+ If implicit_flag is nonzero, then we don't check for the optional
+ kind specification. Not doing so is needed for matching an IMPLICIT
+ statement correctly. */
+
+match
+gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag)
+{
+ /* Provide sufficient space to hold "pdtsymbol". */
+ char *name = XALLOCAVEC (char, GFC_MAX_SYMBOL_LEN + 1);
+ gfc_symbol *sym, *dt_sym;
+ match m;
+ char c;
+ bool seen_deferred_kind, matched_type;
+ const char *dt_name;
+
+ decl_type_param_list = NULL;
+
+ /* A belt and braces check that the typespec is correctly being treated
+ as a deferred characteristic association. */
+ seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION)
+ && (gfc_current_block ()->result->ts.kind == -1)
+ && (ts->kind == -1);
+ gfc_clear_ts (ts);
+ if (seen_deferred_kind)
+ ts->kind = -1;
+
+ /* Clear the current binding label, in case one is given. */
+ curr_binding_label = NULL;
+
+ /* Match BYTE type-spec. */
+ m = match_byte_typespec (ts);
+ if (m != MATCH_NO)
+ return m;
+
+ m = gfc_match (" type (");
+ matched_type = (m == MATCH_YES);
+ if (matched_type)
+ {
+ gfc_gobble_whitespace ();
+ if (gfc_peek_ascii_char () == '*')
+ {
+ if ((m = gfc_match ("* ) ")) != MATCH_YES)
+ return m;
+ if (gfc_comp_struct (gfc_current_state ()))
+ {
+ gfc_error ("Assumed type at %C is not allowed for components");
+ return MATCH_ERROR;
+ }
+ if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C"))
+ return MATCH_ERROR;
+ ts->type = BT_ASSUMED;
+ return MATCH_YES;
+ }
+
+ m = gfc_match ("%n", name);
+ matched_type = (m == MATCH_YES);
+ }
+
+ if ((matched_type && strcmp ("integer", name) == 0)
+ || (!matched_type && gfc_match (" integer") == MATCH_YES))
+ {
+ ts->type = BT_INTEGER;
+ ts->kind = gfc_default_integer_kind;
+ goto get_kind;
+ }
+
+ if ((matched_type && strcmp ("character", name) == 0)
+ || (!matched_type && gfc_match (" character") == MATCH_YES))
+ {
+ if (matched_type
+ && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
+ "intrinsic-type-spec at %C"))
+ return MATCH_ERROR;
+
+ ts->type = BT_CHARACTER;
+ if (implicit_flag == 0)
+ m = gfc_match_char_spec (ts);
+ else
+ m = MATCH_YES;
+
+ if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES)
+ {
+ gfc_error ("Malformed type-spec at %C");
+ return MATCH_ERROR;
+ }
+
+ return m;
+ }
+
+ if ((matched_type && strcmp ("real", name) == 0)
+ || (!matched_type && gfc_match (" real") == MATCH_YES))
+ {
+ ts->type = BT_REAL;
+ ts->kind = gfc_default_real_kind;
+ goto get_kind;
+ }
+
+ if ((matched_type
+ && (strcmp ("doubleprecision", name) == 0
+ || (strcmp ("double", name) == 0
+ && gfc_match (" precision") == MATCH_YES)))
+ || (!matched_type && gfc_match (" double precision") == MATCH_YES))
+ {
+ if (matched_type
+ && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
+ "intrinsic-type-spec at %C"))
+ return MATCH_ERROR;
+
+ if (matched_type && gfc_match_char (')') != MATCH_YES)
+ {
+ gfc_error ("Malformed type-spec at %C");
+ return MATCH_ERROR;
+ }
+
+ ts->type = BT_REAL;
+ ts->kind = gfc_default_double_kind;
+ return MATCH_YES;
+ }
+
+ if ((matched_type && strcmp ("complex", name) == 0)
+ || (!matched_type && gfc_match (" complex") == MATCH_YES))
+ {
+ ts->type = BT_COMPLEX;
+ ts->kind = gfc_default_complex_kind;
+ goto get_kind;
+ }
+
+ if ((matched_type
+ && (strcmp ("doublecomplex", name) == 0
+ || (strcmp ("double", name) == 0
+ && gfc_match (" complex") == MATCH_YES)))
+ || (!matched_type && gfc_match (" double complex") == MATCH_YES))
+ {
+ if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C"))
+ return MATCH_ERROR;
+
+ if (matched_type
+ && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
+ "intrinsic-type-spec at %C"))
+ return MATCH_ERROR;
+
+ if (matched_type && gfc_match_char (')') != MATCH_YES)
+ {
+ gfc_error ("Malformed type-spec at %C");
+ return MATCH_ERROR;
+ }
+
+ ts->type = BT_COMPLEX;
+ ts->kind = gfc_default_double_kind;
+ return MATCH_YES;
+ }
+
+ if ((matched_type && strcmp ("logical", name) == 0)
+ || (!matched_type && gfc_match (" logical") == MATCH_YES))
+ {
+ ts->type = BT_LOGICAL;
+ ts->kind = gfc_default_logical_kind;
+ goto get_kind;
+ }
+
+ if (matched_type)
+ {
+ m = gfc_match_actual_arglist (1, &decl_type_param_list, true);
+ if (m == MATCH_ERROR)
+ return m;
+
+ gfc_gobble_whitespace ();
+ if (gfc_peek_ascii_char () != ')')
+ {
+ gfc_error ("Malformed type-spec at %C");
+ return MATCH_ERROR;
+ }
+ m = gfc_match_char (')'); /* Burn closing ')'. */
+ }
+
+ if (m != MATCH_YES)
+ m = match_record_decl (name);
+
+ if (matched_type || m == MATCH_YES)
+ {
+ ts->type = BT_DERIVED;
+ /* We accept record/s/ or type(s) where s is a structure, but we
+ * don't need all the extra derived-type stuff for structures. */
+ if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym))
+ {
+ gfc_error ("Type name %qs at %C is ambiguous", name);
+ return MATCH_ERROR;
+ }
+
+ if (sym && sym->attr.flavor == FL_DERIVED
+ && sym->attr.pdt_template
+ && gfc_current_state () != COMP_DERIVED)
+ {
+ m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL);
+ if (m != MATCH_YES)
+ return m;
+ gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type);
+ ts->u.derived = sym;
+ const char* lower = gfc_dt_lower_string (sym->name);
+ size_t len = strlen (lower);
+ /* Reallocate with sufficient size. */
+ if (len > GFC_MAX_SYMBOL_LEN)
+ name = XALLOCAVEC (char, len + 1);
+ memcpy (name, lower, len);
+ name[len] = '\0';
+ }
+
+ if (sym && sym->attr.flavor == FL_STRUCT)
+ {
+ ts->u.derived = sym;
+ return MATCH_YES;
+ }
+ /* Actually a derived type. */
+ }
+
+ else
+ {
+ /* Match nested STRUCTURE declarations; only valid within another
+ structure declaration. */
+ if (flag_dec_structure
+ && (gfc_current_state () == COMP_STRUCTURE
+ || gfc_current_state () == COMP_MAP))
+ {
+ m = gfc_match (" structure");
+ if (m == MATCH_YES)
+ {
+ m = gfc_match_structure_decl ();
+ if (m == MATCH_YES)
+ {
+ /* gfc_new_block is updated by match_structure_decl. */
+ ts->type = BT_DERIVED;
+ ts->u.derived = gfc_new_block;
+ return MATCH_YES;
+ }
+ }
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ }
+
+ /* Match CLASS declarations. */
+ m = gfc_match (" class ( * )");
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ else if (m == MATCH_YES)
+ {
+ gfc_symbol *upe;
+ gfc_symtree *st;
+ ts->type = BT_CLASS;
+ gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe);
+ if (upe == NULL)
+ {
+ upe = gfc_new_symbol ("STAR", gfc_current_ns);
+ st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR");
+ st->n.sym = upe;
+ gfc_set_sym_referenced (upe);
+ upe->refs++;
+ upe->ts.type = BT_VOID;
+ upe->attr.unlimited_polymorphic = 1;
+ /* This is essential to force the construction of
+ unlimited polymorphic component class containers. */
+ upe->attr.zero_comp = 1;
+ if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL,
+ &gfc_current_locus))
+ return MATCH_ERROR;
+ }
+ else
+ {
+ st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR");
+ st->n.sym = upe;
+ upe->refs++;
+ }
+ ts->u.derived = upe;
+ return m;
+ }
+
+ m = gfc_match (" class (");
+
+ if (m == MATCH_YES)
+ m = gfc_match ("%n", name);
+ else
+ return m;
+
+ if (m != MATCH_YES)
+ return m;
+ ts->type = BT_CLASS;
+
+ if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C"))
+ return MATCH_ERROR;
+
+ m = gfc_match_actual_arglist (1, &decl_type_param_list, true);
+ if (m == MATCH_ERROR)
+ return m;
+
+ m = gfc_match_char (')');
+ if (m != MATCH_YES)
+ return m;
+ }
+
+ /* Defer association of the derived type until the end of the
+ specification block. However, if the derived type can be
+ found, add it to the typespec. */
+ if (gfc_matching_function)
+ {
+ ts->u.derived = NULL;
+ if (gfc_current_state () != COMP_INTERFACE
+ && !gfc_find_symbol (name, NULL, 1, &sym) && sym)
+ {
+ sym = gfc_find_dt_in_generic (sym);
+ ts->u.derived = sym;
+ }
+ return MATCH_YES;
+ }
+
+ /* Search for the name but allow the components to be defined later. If
+ type = -1, this typespec has been seen in a function declaration but
+ the type could not be accessed at that point. The actual derived type is
+ stored in a symtree with the first letter of the name capitalized; the
+ symtree with the all lower-case name contains the associated
+ generic function. */
+ dt_name = gfc_dt_upper_string (name);
+ sym = NULL;
+ dt_sym = NULL;
+ if (ts->kind != -1)
+ {
+ gfc_get_ha_symbol (name, &sym);
+ if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym))
+ {
+ gfc_error ("Type name %qs at %C is ambiguous", name);
+ return MATCH_ERROR;
+ }
+ if (sym->generic && !dt_sym)
+ dt_sym = gfc_find_dt_in_generic (sym);
+
+ /* Host associated PDTs can get confused with their constructors
+ because they ar instantiated in the template's namespace. */
+ if (!dt_sym)
+ {
+ if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym))
+ {
+ gfc_error ("Type name %qs at %C is ambiguous", name);
+ return MATCH_ERROR;
+ }
+ if (dt_sym && !dt_sym->attr.pdt_type)
+ dt_sym = NULL;
+ }
+ }
+ else if (ts->kind == -1)
+ {
+ int iface = gfc_state_stack->previous->state != COMP_INTERFACE
+ || gfc_current_ns->has_import_set;
+ gfc_find_symbol (name, NULL, iface, &sym);
+ if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym))
+ {
+ gfc_error ("Type name %qs at %C is ambiguous", name);
+ return MATCH_ERROR;
+ }
+ if (sym && sym->generic && !dt_sym)
+ dt_sym = gfc_find_dt_in_generic (sym);
+
+ ts->kind = 0;
+ if (sym == NULL)
+ return MATCH_NO;
+ }
+
+ if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT
+ && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic))
+ || sym->attr.subroutine)
+ {
+ gfc_error ("Type name %qs at %C conflicts with previously declared "
+ "entity at %L, which has the same name", name,
+ &sym->declared_at);
+ return MATCH_ERROR;
+ }
+
+ if (sym && sym->attr.flavor == FL_DERIVED
+ && sym->attr.pdt_template
+ && gfc_current_state () != COMP_DERIVED)
+ {
+ m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL);
+ if (m != MATCH_YES)
+ return m;
+ gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type);
+ ts->u.derived = sym;
+ strcpy (name, gfc_dt_lower_string (sym->name));
+ }
+
+ gfc_save_symbol_data (sym);
+ gfc_set_sym_referenced (sym);
+ if (!sym->attr.generic
+ && !gfc_add_generic (&sym->attr, sym->name, NULL))
+ return MATCH_ERROR;
+
+ if (!sym->attr.function
+ && !gfc_add_function (&sym->attr, sym->name, NULL))
+ return MATCH_ERROR;
+
+ if (dt_sym && dt_sym->attr.flavor == FL_DERIVED
+ && dt_sym->attr.pdt_template
+ && gfc_current_state () != COMP_DERIVED)
+ {
+ m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL);
+ if (m != MATCH_YES)
+ return m;
+ gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type);
+ }
+
+ if (!dt_sym)
+ {
+ gfc_interface *intr, *head;
+
+ /* Use upper case to save the actual derived-type symbol. */
+ gfc_get_symbol (dt_name, NULL, &dt_sym);
+ dt_sym->name = gfc_get_string ("%s", sym->name);
+ head = sym->generic;
+ intr = gfc_get_interface ();
+ intr->sym = dt_sym;
+ intr->where = gfc_current_locus;
+ intr->next = head;
+ sym->generic = intr;
+ sym->attr.if_source = IFSRC_DECL;
+ }
+ else
+ gfc_save_symbol_data (dt_sym);
+
+ gfc_set_sym_referenced (dt_sym);
+
+ if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT
+ && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL))
+ return MATCH_ERROR;
+
+ ts->u.derived = dt_sym;
+
+ return MATCH_YES;
+
+get_kind:
+ if (matched_type
+ && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
+ "intrinsic-type-spec at %C"))
+ return MATCH_ERROR;
+
+ /* For all types except double, derived and character, look for an
+ optional kind specifier. MATCH_NO is actually OK at this point. */
+ if (implicit_flag == 1)
+ {
+ if (matched_type && gfc_match_char (')') != MATCH_YES)
+ return MATCH_ERROR;
+
+ return MATCH_YES;
+ }
+
+ if (gfc_current_form == FORM_FREE)
+ {
+ c = gfc_peek_ascii_char ();
+ if (!gfc_is_whitespace (c) && c != '*' && c != '('
+ && c != ':' && c != ',')
+ {
+ if (matched_type && c == ')')
+ {
+ gfc_next_ascii_char ();
+ return MATCH_YES;
+ }
+ gfc_error ("Malformed type-spec at %C");
+ return MATCH_NO;
+ }
+ }
+
+ m = gfc_match_kind_spec (ts, false);
+ if (m == MATCH_NO && ts->type != BT_CHARACTER)
+ {
+ m = gfc_match_old_kind_spec (ts);
+ if (gfc_validate_kind (ts->type, ts->kind, true) == -1)
+ return MATCH_ERROR;
+ }
+
+ if (matched_type && gfc_match_char (')') != MATCH_YES)
+ {
+ gfc_error ("Malformed type-spec at %C");
+ return MATCH_ERROR;
+ }
+
+ /* Defer association of the KIND expression of function results
+ until after USE and IMPORT statements. */
+ if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ())
+ || gfc_matching_function)
+ return MATCH_YES;
+
+ if (m == MATCH_NO)
+ m = MATCH_YES; /* No kind specifier found. */
+
+ return m;
+}
+
+
+/* Match an IMPLICIT NONE statement. Actually, this statement is
+ already matched in parse.c, or we would not end up here in the
+ first place. So the only thing we need to check, is if there is
+ trailing garbage. If not, the match is successful. */
+
+match
+gfc_match_implicit_none (void)
+{
+ char c;
+ match m;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ bool type = false;
+ bool external = false;
+ locus cur_loc = gfc_current_locus;
+
+ if (gfc_current_ns->seen_implicit_none
+ || gfc_current_ns->has_implicit_none_export)
+ {
+ gfc_error ("Duplicate IMPLICIT NONE statement at %C");
+ return MATCH_ERROR;
+ }
+
+ gfc_gobble_whitespace ();
+ c = gfc_peek_ascii_char ();
+ if (c == '(')
+ {
+ (void) gfc_next_ascii_char ();
+ if (!gfc_notify_std (GFC_STD_F2018, "IMPLICIT NONE with spec list at %C"))
+ return MATCH_ERROR;
+
+ gfc_gobble_whitespace ();
+ if (gfc_peek_ascii_char () == ')')
+ {
+ (void) gfc_next_ascii_char ();
+ type = true;
+ }
+ else
+ for(;;)
+ {
+ m = gfc_match (" %n", name);
+ if (m != MATCH_YES)
+ return MATCH_ERROR;
+
+ if (strcmp (name, "type") == 0)
+ type = true;
+ else if (strcmp (name, "external") == 0)
+ external = true;
+ else
+ return MATCH_ERROR;
+
+ gfc_gobble_whitespace ();
+ c = gfc_next_ascii_char ();
+ if (c == ',')
+ continue;
+ if (c == ')')
+ break;
+ return MATCH_ERROR;
+ }
+ }
+ else
+ type = true;
+
+ if (gfc_match_eos () != MATCH_YES)
+ return MATCH_ERROR;
+
+ gfc_set_implicit_none (type, external, &cur_loc);
+
+ return MATCH_YES;
+}
+
+
+/* Match the letter range(s) of an IMPLICIT statement. */
+
+static match
+match_implicit_range (void)
+{
+ char c, c1, c2;
+ int inner;
+ locus cur_loc;
+
+ cur_loc = gfc_current_locus;
+
+ gfc_gobble_whitespace ();
+ c = gfc_next_ascii_char ();
+ if (c != '(')
+ {
+ gfc_error ("Missing character range in IMPLICIT at %C");
+ goto bad;
+ }
+
+ inner = 1;
+ while (inner)
+ {
+ gfc_gobble_whitespace ();
+ c1 = gfc_next_ascii_char ();
+ if (!ISALPHA (c1))
+ goto bad;
+
+ gfc_gobble_whitespace ();
+ c = gfc_next_ascii_char ();
+
+ switch (c)
+ {
+ case ')':
+ inner = 0; /* Fall through. */
+
+ case ',':
+ c2 = c1;
+ break;
+
+ case '-':
+ gfc_gobble_whitespace ();
+ c2 = gfc_next_ascii_char ();
+ if (!ISALPHA (c2))
+ goto bad;
+
+ gfc_gobble_whitespace ();
+ c = gfc_next_ascii_char ();
+
+ if ((c != ',') && (c != ')'))
+ goto bad;
+ if (c == ')')
+ inner = 0;
+
+ break;
+
+ default:
+ goto bad;
+ }
+
+ if (c1 > c2)
+ {
+ gfc_error ("Letters must be in alphabetic order in "
+ "IMPLICIT statement at %C");
+ goto bad;
+ }
+
+ /* See if we can add the newly matched range to the pending
+ implicits from this IMPLICIT statement. We do not check for
+ conflicts with whatever earlier IMPLICIT statements may have
+ set. This is done when we've successfully finished matching
+ the current one. */
+ if (!gfc_add_new_implicit_range (c1, c2))
+ goto bad;
+ }
+
+ return MATCH_YES;
+
+bad:
+ gfc_syntax_error (ST_IMPLICIT);
+
+ gfc_current_locus = cur_loc;
+ return MATCH_ERROR;
+}
+
+
+/* Match an IMPLICIT statement, storing the types for
+ gfc_set_implicit() if the statement is accepted by the parser.
+ There is a strange looking, but legal syntactic construction
+ possible. It looks like:
+
+ IMPLICIT INTEGER (a-b) (c-d)
+
+ This is legal if "a-b" is a constant expression that happens to
+ equal one of the legal kinds for integers. The real problem
+ happens with an implicit specification that looks like:
+
+ IMPLICIT INTEGER (a-b)
+
+ In this case, a typespec matcher that is "greedy" (as most of the
+ matchers are) gobbles the character range as a kindspec, leaving
+ nothing left. We therefore have to go a bit more slowly in the
+ matching process by inhibiting the kindspec checking during
+ typespec matching and checking for a kind later. */
+
+match
+gfc_match_implicit (void)
+{
+ gfc_typespec ts;
+ locus cur_loc;
+ char c;
+ match m;
+
+ if (gfc_current_ns->seen_implicit_none)
+ {
+ gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) "
+ "statement");
+ return MATCH_ERROR;
+ }
+
+ gfc_clear_ts (&ts);
+
+ /* We don't allow empty implicit statements. */
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ gfc_error ("Empty IMPLICIT statement at %C");
+ return MATCH_ERROR;
+ }
+
+ do
+ {
+ /* First cleanup. */
+ gfc_clear_new_implicit ();
+
+ /* A basic type is mandatory here. */
+ m = gfc_match_decl_type_spec (&ts, 1);
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_NO)
+ goto syntax;
+
+ cur_loc = gfc_current_locus;
+ m = match_implicit_range ();
+
+ if (m == MATCH_YES)
+ {
+ /* We may have <TYPE> (<RANGE>). */
+ gfc_gobble_whitespace ();
+ c = gfc_peek_ascii_char ();
+ if (c == ',' || c == '\n' || c == ';' || c == '!')
+ {
+ /* Check for CHARACTER with no length parameter. */
+ if (ts.type == BT_CHARACTER && !ts.u.cl)
+ {
+ ts.kind = gfc_default_character_kind;
+ ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
+ ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind,
+ NULL, 1);
+ }
+
+ /* Record the Successful match. */
+ if (!gfc_merge_new_implicit (&ts))
+ return MATCH_ERROR;
+ if (c == ',')
+ c = gfc_next_ascii_char ();
+ else if (gfc_match_eos () == MATCH_ERROR)
+ goto error;
+ continue;
+ }
+
+ gfc_current_locus = cur_loc;
+ }
+
+ /* Discard the (incorrectly) matched range. */
+ gfc_clear_new_implicit ();
+
+ /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */
+ if (ts.type == BT_CHARACTER)
+ m = gfc_match_char_spec (&ts);
+ else if (gfc_numeric_ts(&ts) || ts.type == BT_LOGICAL)
+ {
+ m = gfc_match_kind_spec (&ts, false);
+ if (m == MATCH_NO)
+ {
+ m = gfc_match_old_kind_spec (&ts);
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_NO)
+ goto syntax;
+ }
+ }
+ if (m == MATCH_ERROR)
+ goto error;
+
+ m = match_implicit_range ();
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_NO)
+ goto syntax;
+
+ gfc_gobble_whitespace ();
+ c = gfc_next_ascii_char ();
+ if (c != ',' && gfc_match_eos () != MATCH_YES)
+ goto syntax;
+
+ if (!gfc_merge_new_implicit (&ts))
+ return MATCH_ERROR;
+ }
+ while (c == ',');
+
+ return MATCH_YES;
+
+syntax:
+ gfc_syntax_error (ST_IMPLICIT);
+
+error:
+ return MATCH_ERROR;
+}
+
+
+match
+gfc_match_import (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ match m;
+ gfc_symbol *sym;
+ gfc_symtree *st;
+
+ if (gfc_current_ns->proc_name == NULL
+ || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY)
+ {
+ gfc_error ("IMPORT statement at %C only permitted in "
+ "an INTERFACE body");
+ return MATCH_ERROR;
+ }
+
+ if (gfc_current_ns->proc_name->attr.module_procedure)
+ {
+ gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted "
+ "in a module procedure interface body");
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C"))
+ return MATCH_ERROR;
+
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ /* All host variables should be imported. */
+ gfc_current_ns->has_import_set = 1;
+ return MATCH_YES;
+ }
+
+ if (gfc_match (" ::") == MATCH_YES)
+ {
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ gfc_error ("Expecting list of named entities at %C");
+ return MATCH_ERROR;
+ }
+ }
+
+ for(;;)
+ {
+ sym = NULL;
+ m = gfc_match (" %n", name);
+ switch (m)
+ {
+ case MATCH_YES:
+ if (gfc_current_ns->parent != NULL
+ && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym))
+ {
+ gfc_error ("Type name %qs at %C is ambiguous", name);
+ return MATCH_ERROR;
+ }
+ else if (!sym && gfc_current_ns->proc_name->ns->parent != NULL
+ && gfc_find_symbol (name,
+ gfc_current_ns->proc_name->ns->parent,
+ 1, &sym))
+ {
+ gfc_error ("Type name %qs at %C is ambiguous", name);
+ return MATCH_ERROR;
+ }
+
+ if (sym == NULL)
+ {
+ gfc_error ("Cannot IMPORT %qs from host scoping unit "
+ "at %C - does not exist.", name);
+ return MATCH_ERROR;
+ }
+
+ if (gfc_find_symtree (gfc_current_ns->sym_root, name))
+ {
+ gfc_warning (0, "%qs is already IMPORTed from host scoping unit "
+ "at %C", name);
+ goto next_item;
+ }
+
+ st = gfc_new_symtree (&gfc_current_ns->sym_root, name);
+ st->n.sym = sym;
+ sym->refs++;
+ sym->attr.imported = 1;
+
+ if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym)))
+ {
+ /* The actual derived type is stored in a symtree with the first
+ letter of the name capitalized; the symtree with the all
+ lower-case name contains the associated generic function. */
+ st = gfc_new_symtree (&gfc_current_ns->sym_root,
+ gfc_dt_upper_string (name));
+ st->n.sym = sym;
+ sym->refs++;
+ sym->attr.imported = 1;
+ }
+
+ goto next_item;
+
+ case MATCH_NO:
+ break;
+
+ case MATCH_ERROR:
+ return MATCH_ERROR;
+ }
+
+ next_item:
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in IMPORT statement at %C");
+ return MATCH_ERROR;
+}
+
+
+/* A minimal implementation of gfc_match without whitespace, escape
+ characters or variable arguments. Returns true if the next
+ characters match the TARGET template exactly. */
+
+static bool
+match_string_p (const char *target)
+{
+ const char *p;
+
+ for (p = target; *p; p++)
+ if ((char) gfc_next_ascii_char () != *p)
+ return false;
+ return true;
+}
+
+/* Matches an attribute specification including array specs. If
+ successful, leaves the variables current_attr and current_as
+ holding the specification. Also sets the colon_seen variable for
+ later use by matchers associated with initializations.
+
+ This subroutine is a little tricky in the sense that we don't know
+ if we really have an attr-spec until we hit the double colon.
+ Until that time, we can only return MATCH_NO. This forces us to
+ check for duplicate specification at this level. */
+
+static match
+match_attr_spec (void)
+{
+ /* Modifiers that can exist in a type statement. */
+ enum
+ { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN,
+ DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT,
+ DECL_DIMENSION, DECL_EXTERNAL,
+ DECL_INTRINSIC, DECL_OPTIONAL,
+ DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE,
+ DECL_STATIC, DECL_AUTOMATIC,
+ DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE,
+ DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS,
+ DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */
+ };
+
+/* GFC_DECL_END is the sentinel, index starts at 0. */
+#define NUM_DECL GFC_DECL_END
+
+ /* Make sure that values from sym_intent are safe to be used here. */
+ gcc_assert (INTENT_IN > 0);
+
+ locus start, seen_at[NUM_DECL];
+ int seen[NUM_DECL];
+ unsigned int d;
+ const char *attr;
+ match m;
+ bool t;
+
+ gfc_clear_attr (&current_attr);
+ start = gfc_current_locus;
+
+ current_as = NULL;
+ colon_seen = 0;
+ attr_seen = 0;
+
+ /* See if we get all of the keywords up to the final double colon. */
+ for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
+ seen[d] = 0;
+
+ for (;;)
+ {
+ char ch;
+
+ d = DECL_NONE;
+ gfc_gobble_whitespace ();
+
+ ch = gfc_next_ascii_char ();
+ if (ch == ':')
+ {
+ /* This is the successful exit condition for the loop. */
+ if (gfc_next_ascii_char () == ':')
+ break;
+ }
+ else if (ch == ',')
+ {
+ gfc_gobble_whitespace ();
+ switch (gfc_peek_ascii_char ())
+ {
+ case 'a':
+ gfc_next_ascii_char ();
+ switch (gfc_next_ascii_char ())
+ {
+ case 'l':
+ if (match_string_p ("locatable"))
+ {
+ /* Matched "allocatable". */
+ d = DECL_ALLOCATABLE;
+ }
+ break;
+
+ case 's':
+ if (match_string_p ("ynchronous"))
+ {
+ /* Matched "asynchronous". */
+ d = DECL_ASYNCHRONOUS;
+ }
+ break;
+
+ case 'u':
+ if (match_string_p ("tomatic"))
+ {
+ /* Matched "automatic". */
+ d = DECL_AUTOMATIC;
+ }
+ break;
+ }
+ break;
+
+ case 'b':
+ /* Try and match the bind(c). */
+ m = gfc_match_bind_c (NULL, true);
+ if (m == MATCH_YES)
+ d = DECL_IS_BIND_C;
+ else if (m == MATCH_ERROR)
+ goto cleanup;
+ break;
+
+ case 'c':
+ gfc_next_ascii_char ();
+ if ('o' != gfc_next_ascii_char ())
+ break;
+ switch (gfc_next_ascii_char ())
+ {
+ case 'd':
+ if (match_string_p ("imension"))
+ {
+ d = DECL_CODIMENSION;
+ break;
+ }
+ /* FALLTHRU */
+ case 'n':
+ if (match_string_p ("tiguous"))
+ {
+ d = DECL_CONTIGUOUS;
+ break;
+ }
+ }
+ break;
+
+ case 'd':
+ if (match_string_p ("dimension"))
+ d = DECL_DIMENSION;
+ break;
+
+ case 'e':
+ if (match_string_p ("external"))
+ d = DECL_EXTERNAL;
+ break;
+
+ case 'i':
+ if (match_string_p ("int"))
+ {
+ ch = gfc_next_ascii_char ();
+ if (ch == 'e')
+ {
+ if (match_string_p ("nt"))
+ {
+ /* Matched "intent". */
+ d = match_intent_spec ();
+ if (d == INTENT_UNKNOWN)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+ }
+ else if (ch == 'r')
+ {
+ if (match_string_p ("insic"))
+ {
+ /* Matched "intrinsic". */
+ d = DECL_INTRINSIC;
+ }
+ }
+ }
+ break;
+
+ case 'k':
+ if (match_string_p ("kind"))
+ d = DECL_KIND;
+ break;
+
+ case 'l':
+ if (match_string_p ("len"))
+ d = DECL_LEN;
+ break;
+
+ case 'o':
+ if (match_string_p ("optional"))
+ d = DECL_OPTIONAL;
+ break;
+
+ case 'p':
+ gfc_next_ascii_char ();
+ switch (gfc_next_ascii_char ())
+ {
+ case 'a':
+ if (match_string_p ("rameter"))
+ {
+ /* Matched "parameter". */
+ d = DECL_PARAMETER;
+ }
+ break;
+
+ case 'o':
+ if (match_string_p ("inter"))
+ {
+ /* Matched "pointer". */
+ d = DECL_POINTER;
+ }
+ break;
+
+ case 'r':
+ ch = gfc_next_ascii_char ();
+ if (ch == 'i')
+ {
+ if (match_string_p ("vate"))
+ {
+ /* Matched "private". */
+ d = DECL_PRIVATE;
+ }
+ }
+ else if (ch == 'o')
+ {
+ if (match_string_p ("tected"))
+ {
+ /* Matched "protected". */
+ d = DECL_PROTECTED;
+ }
+ }
+ break;
+
+ case 'u':
+ if (match_string_p ("blic"))
+ {
+ /* Matched "public". */
+ d = DECL_PUBLIC;
+ }
+ break;
+ }
+ break;
+
+ case 's':
+ gfc_next_ascii_char ();
+ switch (gfc_next_ascii_char ())
+ {
+ case 'a':
+ if (match_string_p ("ve"))
+ {
+ /* Matched "save". */
+ d = DECL_SAVE;
+ }
+ break;
+
+ case 't':
+ if (match_string_p ("atic"))
+ {
+ /* Matched "static". */
+ d = DECL_STATIC;
+ }
+ break;
+ }
+ break;
+
+ case 't':
+ if (match_string_p ("target"))
+ d = DECL_TARGET;
+ break;
+
+ case 'v':
+ gfc_next_ascii_char ();
+ ch = gfc_next_ascii_char ();
+ if (ch == 'a')
+ {
+ if (match_string_p ("lue"))
+ {
+ /* Matched "value". */
+ d = DECL_VALUE;
+ }
+ }
+ else if (ch == 'o')
+ {
+ if (match_string_p ("latile"))
+ {
+ /* Matched "volatile". */
+ d = DECL_VOLATILE;
+ }
+ }
+ break;
+ }
+ }
+
+ /* No double colon and no recognizable decl_type, so assume that
+ we've been looking at something else the whole time. */
+ if (d == DECL_NONE)
+ {
+ m = MATCH_NO;
+ goto cleanup;
+ }
+
+ /* Check to make sure any parens are paired up correctly. */
+ if (gfc_match_parens () == MATCH_ERROR)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ seen[d]++;
+ seen_at[d] = gfc_current_locus;
+
+ if (d == DECL_DIMENSION || d == DECL_CODIMENSION)
+ {
+ gfc_array_spec *as = NULL;
+
+ m = gfc_match_array_spec (&as, d == DECL_DIMENSION,
+ d == DECL_CODIMENSION);
+
+ if (current_as == NULL)
+ current_as = as;
+ else if (m == MATCH_YES)
+ {
+ if (!merge_array_spec (as, current_as, false))
+ m = MATCH_ERROR;
+ free (as);
+ }
+
+ if (m == MATCH_NO)
+ {
+ if (d == DECL_CODIMENSION)
+ gfc_error ("Missing codimension specification at %C");
+ else
+ gfc_error ("Missing dimension specification at %C");
+ m = MATCH_ERROR;
+ }
+
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ }
+ }
+
+ /* Since we've seen a double colon, we have to be looking at an
+ attr-spec. This means that we can now issue errors. */
+ for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
+ if (seen[d] > 1)
+ {
+ switch (d)
+ {
+ case DECL_ALLOCATABLE:
+ attr = "ALLOCATABLE";
+ break;
+ case DECL_ASYNCHRONOUS:
+ attr = "ASYNCHRONOUS";
+ break;
+ case DECL_CODIMENSION:
+ attr = "CODIMENSION";
+ break;
+ case DECL_CONTIGUOUS:
+ attr = "CONTIGUOUS";
+ break;
+ case DECL_DIMENSION:
+ attr = "DIMENSION";
+ break;
+ case DECL_EXTERNAL:
+ attr = "EXTERNAL";
+ break;
+ case DECL_IN:
+ attr = "INTENT (IN)";
+ break;
+ case DECL_OUT:
+ attr = "INTENT (OUT)";
+ break;
+ case DECL_INOUT:
+ attr = "INTENT (IN OUT)";
+ break;
+ case DECL_INTRINSIC:
+ attr = "INTRINSIC";
+ break;
+ case DECL_OPTIONAL:
+ attr = "OPTIONAL";
+ break;
+ case DECL_KIND:
+ attr = "KIND";
+ break;
+ case DECL_LEN:
+ attr = "LEN";
+ break;
+ case DECL_PARAMETER:
+ attr = "PARAMETER";
+ break;
+ case DECL_POINTER:
+ attr = "POINTER";
+ break;
+ case DECL_PROTECTED:
+ attr = "PROTECTED";
+ break;
+ case DECL_PRIVATE:
+ attr = "PRIVATE";
+ break;
+ case DECL_PUBLIC:
+ attr = "PUBLIC";
+ break;
+ case DECL_SAVE:
+ attr = "SAVE";
+ break;
+ case DECL_STATIC:
+ attr = "STATIC";
+ break;
+ case DECL_AUTOMATIC:
+ attr = "AUTOMATIC";
+ break;
+ case DECL_TARGET:
+ attr = "TARGET";
+ break;
+ case DECL_IS_BIND_C:
+ attr = "IS_BIND_C";
+ break;
+ case DECL_VALUE:
+ attr = "VALUE";
+ break;
+ case DECL_VOLATILE:
+ attr = "VOLATILE";
+ break;
+ default:
+ attr = NULL; /* This shouldn't happen. */
+ }
+
+ gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* Now that we've dealt with duplicate attributes, add the attributes
+ to the current attribute. */
+ for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
+ {
+ if (seen[d] == 0)
+ continue;
+ else
+ attr_seen = 1;
+
+ if ((d == DECL_STATIC || d == DECL_AUTOMATIC)
+ && !flag_dec_static)
+ {
+ gfc_error ("%s at %L is a DEC extension, enable with "
+ "%<-fdec-static%>",
+ d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ /* Allow SAVE with STATIC, but don't complain. */
+ if (d == DECL_STATIC && seen[DECL_SAVE])
+ continue;
+
+ if (gfc_comp_struct (gfc_current_state ())
+ && d != DECL_DIMENSION && d != DECL_CODIMENSION
+ && d != DECL_POINTER && d != DECL_PRIVATE
+ && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE)
+ {
+ bool is_derived = gfc_current_state () == COMP_DERIVED;
+ if (d == DECL_ALLOCATABLE)
+ {
+ if (!gfc_notify_std (GFC_STD_F2003, is_derived
+ ? G_("ALLOCATABLE attribute at %C in a "
+ "TYPE definition")
+ : G_("ALLOCATABLE attribute at %C in a "
+ "STRUCTURE definition")))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+ else if (d == DECL_KIND)
+ {
+ if (!gfc_notify_std (GFC_STD_F2003, is_derived
+ ? G_("KIND attribute at %C in a "
+ "TYPE definition")
+ : G_("KIND attribute at %C in a "
+ "STRUCTURE definition")))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ if (current_ts.type != BT_INTEGER)
+ {
+ gfc_error ("Component with KIND attribute at %C must be "
+ "INTEGER");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+ else if (d == DECL_LEN)
+ {
+ if (!gfc_notify_std (GFC_STD_F2003, is_derived
+ ? G_("LEN attribute at %C in a "
+ "TYPE definition")
+ : G_("LEN attribute at %C in a "
+ "STRUCTURE definition")))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ if (current_ts.type != BT_INTEGER)
+ {
+ gfc_error ("Component with LEN attribute at %C must be "
+ "INTEGER");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+ else
+ {
+ gfc_error (is_derived ? G_("Attribute at %L is not allowed in a "
+ "TYPE definition")
+ : G_("Attribute at %L is not allowed in a "
+ "STRUCTURE definition"), &seen_at[d]);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+
+ if ((d == DECL_PRIVATE || d == DECL_PUBLIC)
+ && gfc_current_state () != COMP_MODULE)
+ {
+ if (d == DECL_PRIVATE)
+ attr = "PRIVATE";
+ else
+ attr = "PUBLIC";
+ if (gfc_current_state () == COMP_DERIVED
+ && gfc_state_stack->previous
+ && gfc_state_stack->previous->state == COMP_MODULE)
+ {
+ if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s "
+ "at %L in a TYPE definition", attr,
+ &seen_at[d]))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+ else
+ {
+ gfc_error ("%s attribute at %L is not allowed outside of the "
+ "specification part of a module", attr, &seen_at[d]);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+
+ if (gfc_current_state () != COMP_DERIVED
+ && (d == DECL_KIND || d == DECL_LEN))
+ {
+ gfc_error ("Attribute at %L is not allowed outside a TYPE "
+ "definition", &seen_at[d]);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ switch (d)
+ {
+ case DECL_ALLOCATABLE:
+ t = gfc_add_allocatable (&current_attr, &seen_at[d]);
+ break;
+
+ case DECL_ASYNCHRONOUS:
+ if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C"))
+ t = false;
+ else
+ t = gfc_add_asynchronous (&current_attr, NULL, &seen_at[d]);
+ break;
+
+ case DECL_CODIMENSION:
+ t = gfc_add_codimension (&current_attr, NULL, &seen_at[d]);
+ break;
+
+ case DECL_CONTIGUOUS:
+ if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C"))
+ t = false;
+ else
+ t = gfc_add_contiguous (&current_attr, NULL, &seen_at[d]);
+ break;
+
+ case DECL_DIMENSION:
+ t = gfc_add_dimension (&current_attr, NULL, &seen_at[d]);
+ break;
+
+ case DECL_EXTERNAL:
+ t = gfc_add_external (&current_attr, &seen_at[d]);
+ break;
+
+ case DECL_IN:
+ t = gfc_add_intent (&current_attr, INTENT_IN, &seen_at[d]);
+ break;
+
+ case DECL_OUT:
+ t = gfc_add_intent (&current_attr, INTENT_OUT, &seen_at[d]);
+ break;
+
+ case DECL_INOUT:
+ t = gfc_add_intent (&current_attr, INTENT_INOUT, &seen_at[d]);
+ break;
+
+ case DECL_INTRINSIC:
+ t = gfc_add_intrinsic (&current_attr, &seen_at[d]);
+ break;
+
+ case DECL_OPTIONAL:
+ t = gfc_add_optional (&current_attr, &seen_at[d]);
+ break;
+
+ case DECL_KIND:
+ t = gfc_add_kind (&current_attr, &seen_at[d]);
+ break;
+
+ case DECL_LEN:
+ t = gfc_add_len (&current_attr, &seen_at[d]);
+ break;
+
+ case DECL_PARAMETER:
+ t = gfc_add_flavor (&current_attr, FL_PARAMETER, NULL, &seen_at[d]);
+ break;
+
+ case DECL_POINTER:
+ t = gfc_add_pointer (&current_attr, &seen_at[d]);
+ break;
+
+ case DECL_PROTECTED:
+ if (gfc_current_state () != COMP_MODULE
+ || (gfc_current_ns->proc_name
+ && gfc_current_ns->proc_name->attr.flavor != FL_MODULE))
+ {
+ gfc_error ("PROTECTED at %C only allowed in specification "
+ "part of a module");
+ t = false;
+ break;
+ }
+
+ if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C"))
+ t = false;
+ else
+ t = gfc_add_protected (&current_attr, NULL, &seen_at[d]);
+ break;
+
+ case DECL_PRIVATE:
+ t = gfc_add_access (&current_attr, ACCESS_PRIVATE, NULL,
+ &seen_at[d]);
+ break;
+
+ case DECL_PUBLIC:
+ t = gfc_add_access (&current_attr, ACCESS_PUBLIC, NULL,
+ &seen_at[d]);
+ break;
+
+ case DECL_STATIC:
+ case DECL_SAVE:
+ t = gfc_add_save (&current_attr, SAVE_EXPLICIT, NULL, &seen_at[d]);
+ break;
+
+ case DECL_AUTOMATIC:
+ t = gfc_add_automatic (&current_attr, NULL, &seen_at[d]);
+ break;
+
+ case DECL_TARGET:
+ t = gfc_add_target (&current_attr, &seen_at[d]);
+ break;
+
+ case DECL_IS_BIND_C:
+ t = gfc_add_is_bind_c(&current_attr, NULL, &seen_at[d], 0);
+ break;
+
+ case DECL_VALUE:
+ if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C"))
+ t = false;
+ else
+ t = gfc_add_value (&current_attr, NULL, &seen_at[d]);
+ break;
+
+ case DECL_VOLATILE:
+ if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C"))
+ t = false;
+ else
+ t = gfc_add_volatile (&current_attr, NULL, &seen_at[d]);
+ break;
+
+ default:
+ gfc_internal_error ("match_attr_spec(): Bad attribute");
+ }
+
+ if (!t)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+
+ /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */
+ if ((gfc_current_state () == COMP_MODULE
+ || gfc_current_state () == COMP_SUBMODULE)
+ && !current_attr.save
+ && (gfc_option.allow_std & GFC_STD_F2008) != 0)
+ current_attr.save = SAVE_IMPLICIT;
+
+ colon_seen = 1;
+ return MATCH_YES;
+
+cleanup:
+ gfc_current_locus = start;
+ gfc_free_array_spec (current_as);
+ current_as = NULL;
+ attr_seen = 0;
+ return m;
+}
+
+
+/* Set the binding label, dest_label, either with the binding label
+ stored in the given gfc_typespec, ts, or if none was provided, it
+ will be the symbol name in all lower case, as required by the draft
+ (J3/04-007, section 15.4.1). If a binding label was given and
+ there is more than one argument (num_idents), it is an error. */
+
+static bool
+set_binding_label (const char **dest_label, const char *sym_name,
+ int num_idents)
+{
+ if (num_idents > 1 && has_name_equals)
+ {
+ gfc_error ("Multiple identifiers provided with "
+ "single NAME= specifier at %C");
+ return false;
+ }
+
+ if (curr_binding_label)
+ /* Binding label given; store in temp holder till have sym. */
+ *dest_label = curr_binding_label;
+ else
+ {
+ /* No binding label given, and the NAME= specifier did not exist,
+ which means there was no NAME="". */
+ if (sym_name != NULL && has_name_equals == 0)
+ *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name));
+ }
+
+ return true;
+}
+
+
+/* Set the status of the given common block as being BIND(C) or not,
+ depending on the given parameter, is_bind_c. */
+
+static void
+set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c)
+{
+ com_block->is_bind_c = is_bind_c;
+ return;
+}
+
+
+/* Verify that the given gfc_typespec is for a C interoperable type. */
+
+bool
+gfc_verify_c_interop (gfc_typespec *ts)
+{
+ if (ts->type == BT_DERIVED && ts->u.derived != NULL)
+ return (ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c)
+ ? true : false;
+ else if (ts->type == BT_CLASS)
+ return false;
+ else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED)
+ return false;
+
+ return true;
+}
+
+
+/* Verify that the variables of a given common block, which has been
+ defined with the attribute specifier bind(c), to be of a C
+ interoperable type. Errors will be reported here, if
+ encountered. */
+
+bool
+verify_com_block_vars_c_interop (gfc_common_head *com_block)
+{
+ gfc_symbol *curr_sym = NULL;
+ bool retval = true;
+
+ curr_sym = com_block->head;
+
+ /* Make sure we have at least one symbol. */
+ if (curr_sym == NULL)
+ return retval;
+
+ /* Here we know we have a symbol, so we'll execute this loop
+ at least once. */
+ do
+ {
+ /* The second to last param, 1, says this is in a common block. */
+ retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block);
+ curr_sym = curr_sym->common_next;
+ } while (curr_sym != NULL);
+
+ return retval;
+}
+
+
+/* Verify that a given BIND(C) symbol is C interoperable. If it is not,
+ an appropriate error message is reported. */
+
+bool
+verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts,
+ int is_in_common, gfc_common_head *com_block)
+{
+ bool bind_c_function = false;
+ bool retval = true;
+
+ if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c)
+ bind_c_function = true;
+
+ if (tmp_sym->attr.function && tmp_sym->result != NULL)
+ {
+ tmp_sym = tmp_sym->result;
+ /* Make sure it wasn't an implicitly typed result. */
+ if (tmp_sym->attr.implicit_type && warn_c_binding_type)
+ {
+ gfc_warning (OPT_Wc_binding_type,
+ "Implicitly declared BIND(C) function %qs at "
+ "%L may not be C interoperable", tmp_sym->name,
+ &tmp_sym->declared_at);
+ tmp_sym->ts.f90_type = tmp_sym->ts.type;
+ /* Mark it as C interoperable to prevent duplicate warnings. */
+ tmp_sym->ts.is_c_interop = 1;
+ tmp_sym->attr.is_c_interop = 1;
+ }
+ }
+
+ /* Here, we know we have the bind(c) attribute, so if we have
+ enough type info, then verify that it's a C interop kind.
+ The info could be in the symbol already, or possibly still in
+ the given ts (current_ts), so look in both. */
+ if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN)
+ {
+ if (!gfc_verify_c_interop (&(tmp_sym->ts)))
+ {
+ /* See if we're dealing with a sym in a common block or not. */
+ if (is_in_common == 1 && warn_c_binding_type)
+ {
+ gfc_warning (OPT_Wc_binding_type,
+ "Variable %qs in common block %qs at %L "
+ "may not be a C interoperable "
+ "kind though common block %qs is BIND(C)",
+ tmp_sym->name, com_block->name,
+ &(tmp_sym->declared_at), com_block->name);
+ }
+ else
+ {
+ if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED)
+ gfc_error ("Type declaration %qs at %L is not C "
+ "interoperable but it is BIND(C)",
+ tmp_sym->name, &(tmp_sym->declared_at));
+ else if (warn_c_binding_type)
+ gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L "
+ "may not be a C interoperable "
+ "kind but it is BIND(C)",
+ tmp_sym->name, &(tmp_sym->declared_at));
+ }
+ }
+
+ /* Variables declared w/in a common block can't be bind(c)
+ since there's no way for C to see these variables, so there's
+ semantically no reason for the attribute. */
+ if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1)
+ {
+ gfc_error ("Variable %qs in common block %qs at "
+ "%L cannot be declared with BIND(C) "
+ "since it is not a global",
+ tmp_sym->name, com_block->name,
+ &(tmp_sym->declared_at));
+ retval = false;
+ }
+
+ /* Scalar variables that are bind(c) cannot have the pointer
+ or allocatable attributes. */
+ if (tmp_sym->attr.is_bind_c == 1)
+ {
+ if (tmp_sym->attr.pointer == 1)
+ {
+ gfc_error ("Variable %qs at %L cannot have both the "
+ "POINTER and BIND(C) attributes",
+ tmp_sym->name, &(tmp_sym->declared_at));
+ retval = false;
+ }
+
+ if (tmp_sym->attr.allocatable == 1)
+ {
+ gfc_error ("Variable %qs at %L cannot have both the "
+ "ALLOCATABLE and BIND(C) attributes",
+ tmp_sym->name, &(tmp_sym->declared_at));
+ retval = false;
+ }
+
+ }
+
+ /* If it is a BIND(C) function, make sure the return value is a
+ scalar value. The previous tests in this function made sure
+ the type is interoperable. */
+ if (bind_c_function && tmp_sym->as != NULL)
+ gfc_error ("Return type of BIND(C) function %qs at %L cannot "
+ "be an array", tmp_sym->name, &(tmp_sym->declared_at));
+
+ /* BIND(C) functions cannot return a character string. */
+ if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER)
+ if (tmp_sym->ts.u.cl == NULL || tmp_sym->ts.u.cl->length == NULL
+ || tmp_sym->ts.u.cl->length->expr_type != EXPR_CONSTANT
+ || mpz_cmp_si (tmp_sym->ts.u.cl->length->value.integer, 1) != 0)
+ gfc_error ("Return type of BIND(C) function %qs of character "
+ "type at %L must have length 1", tmp_sym->name,
+ &(tmp_sym->declared_at));
+ }
+
+ /* See if the symbol has been marked as private. If it has, make sure
+ there is no binding label and warn the user if there is one. */
+ if (tmp_sym->attr.access == ACCESS_PRIVATE
+ && tmp_sym->binding_label)
+ /* Use gfc_warning_now because we won't say that the symbol fails
+ just because of this. */
+ gfc_warning_now (0, "Symbol %qs at %L is marked PRIVATE but has been "
+ "given the binding label %qs", tmp_sym->name,
+ &(tmp_sym->declared_at), tmp_sym->binding_label);
+
+ return retval;
+}
+
+
+/* Set the appropriate fields for a symbol that's been declared as
+ BIND(C) (the is_bind_c flag and the binding label), and verify that
+ the type is C interoperable. Errors are reported by the functions
+ used to set/test these fields. */
+
+static bool
+set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents)
+{
+ bool retval = true;
+
+ /* TODO: Do we need to make sure the vars aren't marked private? */
+
+ /* Set the is_bind_c bit in symbol_attribute. */
+ gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0);
+
+ if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents))
+ return false;
+
+ return retval;
+}
+
+
+/* Set the fields marking the given common block as BIND(C), including
+ a binding label, and report any errors encountered. */
+
+static bool
+set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents)
+{
+ bool retval = true;
+
+ /* destLabel, common name, typespec (which may have binding label). */
+ if (!set_binding_label (&com_block->binding_label, com_block->name,
+ num_idents))
+ return false;
+
+ /* Set the given common block (com_block) to being bind(c) (1). */
+ set_com_block_bind_c (com_block, 1);
+
+ return retval;
+}
+
+
+/* Retrieve the list of one or more identifiers that the given bind(c)
+ attribute applies to. */
+
+static bool
+get_bind_c_idents (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ int num_idents = 0;
+ gfc_symbol *tmp_sym = NULL;
+ match found_id;
+ gfc_common_head *com_block = NULL;
+
+ if (gfc_match_name (name) == MATCH_YES)
+ {
+ found_id = MATCH_YES;
+ gfc_get_ha_symbol (name, &tmp_sym);
+ }
+ else if (gfc_match_common_name (name) == MATCH_YES)
+ {
+ found_id = MATCH_YES;
+ com_block = gfc_get_common (name, 0);
+ }
+ else
+ {
+ gfc_error ("Need either entity or common block name for "
+ "attribute specification statement at %C");
+ return false;
+ }
+
+ /* Save the current identifier and look for more. */
+ do
+ {
+ /* Increment the number of identifiers found for this spec stmt. */
+ num_idents++;
+
+ /* Make sure we have a sym or com block, and verify that it can
+ be bind(c). Set the appropriate field(s) and look for more
+ identifiers. */
+ if (tmp_sym != NULL || com_block != NULL)
+ {
+ if (tmp_sym != NULL)
+ {
+ if (!set_verify_bind_c_sym (tmp_sym, num_idents))
+ return false;
+ }
+ else
+ {
+ if (!set_verify_bind_c_com_block (com_block, num_idents))
+ return false;
+ }
+
+ /* Look to see if we have another identifier. */
+ tmp_sym = NULL;
+ if (gfc_match_eos () == MATCH_YES)
+ found_id = MATCH_NO;
+ else if (gfc_match_char (',') != MATCH_YES)
+ found_id = MATCH_NO;
+ else if (gfc_match_name (name) == MATCH_YES)
+ {
+ found_id = MATCH_YES;
+ gfc_get_ha_symbol (name, &tmp_sym);
+ }
+ else if (gfc_match_common_name (name) == MATCH_YES)
+ {
+ found_id = MATCH_YES;
+ com_block = gfc_get_common (name, 0);
+ }
+ else
+ {
+ gfc_error ("Missing entity or common block name for "
+ "attribute specification statement at %C");
+ return false;
+ }
+ }
+ else
+ {
+ gfc_internal_error ("Missing symbol");
+ }
+ } while (found_id == MATCH_YES);
+
+ /* if we get here we were successful */
+ return true;
+}
+
+
+/* Try and match a BIND(C) attribute specification statement. */
+
+match
+gfc_match_bind_c_stmt (void)
+{
+ match found_match = MATCH_NO;
+ gfc_typespec *ts;
+
+ ts = &current_ts;
+
+ /* This may not be necessary. */
+ gfc_clear_ts (ts);
+ /* Clear the temporary binding label holder. */
+ curr_binding_label = NULL;
+
+ /* Look for the bind(c). */
+ found_match = gfc_match_bind_c (NULL, true);
+
+ if (found_match == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C"))
+ return MATCH_ERROR;
+
+ /* Look for the :: now, but it is not required. */
+ gfc_match (" :: ");
+
+ /* Get the identifier(s) that needs to be updated. This may need to
+ change to hand the flag(s) for the attr specified so all identifiers
+ found can have all appropriate parts updated (assuming that the same
+ spec stmt can have multiple attrs, such as both bind(c) and
+ allocatable...). */
+ if (!get_bind_c_idents ())
+ /* Error message should have printed already. */
+ return MATCH_ERROR;
+ }
+
+ return found_match;
+}
+
+
+/* Match a data declaration statement. */
+
+match
+gfc_match_data_decl (void)
+{
+ gfc_symbol *sym;
+ match m;
+ int elem;
+
+ type_param_spec_list = NULL;
+ decl_type_param_list = NULL;
+
+ num_idents_on_line = 0;
+
+ m = gfc_match_decl_type_spec (&current_ts, 0);
+ if (m != MATCH_YES)
+ return m;
+
+ if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
+ && !gfc_comp_struct (gfc_current_state ()))
+ {
+ sym = gfc_use_derived (current_ts.u.derived);
+
+ if (sym == NULL)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ current_ts.u.derived = sym;
+ }
+
+ m = match_attr_spec ();
+ if (m == MATCH_ERROR)
+ {
+ m = MATCH_NO;
+ goto cleanup;
+ }
+
+ if (current_ts.type == BT_CLASS
+ && current_ts.u.derived->attr.unlimited_polymorphic)
+ goto ok;
+
+ if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
+ && current_ts.u.derived->components == NULL
+ && !current_ts.u.derived->attr.zero_comp)
+ {
+
+ if (current_attr.pointer && gfc_comp_struct (gfc_current_state ()))
+ goto ok;
+
+ if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED)
+ goto ok;
+
+ gfc_find_symbol (current_ts.u.derived->name,
+ current_ts.u.derived->ns, 1, &sym);
+
+ /* Any symbol that we find had better be a type definition
+ which has its components defined, or be a structure definition
+ actively being parsed. */
+ if (sym != NULL && gfc_fl_struct (sym->attr.flavor)
+ && (current_ts.u.derived->components != NULL
+ || current_ts.u.derived->attr.zero_comp
+ || current_ts.u.derived == gfc_new_block))
+ goto ok;
+
+ gfc_error ("Derived type at %C has not been previously defined "
+ "and so cannot appear in a derived type definition");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ok:
+ /* If we have an old-style character declaration, and no new-style
+ attribute specifications, then there a comma is optional between
+ the type specification and the variable list. */
+ if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector)
+ gfc_match_char (',');
+
+ /* Give the types/attributes to symbols that follow. Give the element
+ a number so that repeat character length expressions can be copied. */
+ elem = 1;
+ for (;;)
+ {
+ num_idents_on_line++;
+ m = variable_decl (elem++);
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ if (m == MATCH_NO)
+ break;
+
+ if (gfc_match_eos () == MATCH_YES)
+ goto cleanup;
+ if (gfc_match_char (',') != MATCH_YES)
+ break;
+ }
+
+ if (!gfc_error_flag_test ())
+ {
+ /* An anonymous structure declaration is unambiguous; if we matched one
+ according to gfc_match_structure_decl, we need to return MATCH_YES
+ here to avoid confusing the remaining matchers, even if there was an
+ error during variable_decl. We must flush any such errors. Note this
+ causes the parser to gracefully continue parsing the remaining input
+ as a structure body, which likely follows. */
+ if (current_ts.type == BT_DERIVED && current_ts.u.derived
+ && gfc_fl_struct (current_ts.u.derived->attr.flavor))
+ {
+ gfc_error_now ("Syntax error in anonymous structure declaration"
+ " at %C");
+ /* Skip the bad variable_decl and line up for the start of the
+ structure body. */
+ gfc_error_recovery ();
+ m = MATCH_YES;
+ goto cleanup;
+ }
+
+ gfc_error ("Syntax error in data declaration at %C");
+ }
+
+ m = MATCH_ERROR;
+
+ gfc_free_data_all (gfc_current_ns);
+
+cleanup:
+ if (saved_kind_expr)
+ gfc_free_expr (saved_kind_expr);
+ if (type_param_spec_list)
+ gfc_free_actual_arglist (type_param_spec_list);
+ if (decl_type_param_list)
+ gfc_free_actual_arglist (decl_type_param_list);
+ saved_kind_expr = NULL;
+ gfc_free_array_spec (current_as);
+ current_as = NULL;
+ return m;
+}
+
+static bool
+in_module_or_interface(void)
+{
+ if (gfc_current_state () == COMP_MODULE
+ || gfc_current_state () == COMP_SUBMODULE
+ || gfc_current_state () == COMP_INTERFACE)
+ return true;
+
+ if (gfc_state_stack->state == COMP_CONTAINS
+ || gfc_state_stack->state == COMP_FUNCTION
+ || gfc_state_stack->state == COMP_SUBROUTINE)
+ {
+ gfc_state_data *p;
+ for (p = gfc_state_stack->previous; p ; p = p->previous)
+ {
+ if (p->state == COMP_MODULE || p->state == COMP_SUBMODULE
+ || p->state == COMP_INTERFACE)
+ return true;
+ }
+ }
+ return false;
+}
+
+/* Match a prefix associated with a function or subroutine
+ declaration. If the typespec pointer is nonnull, then a typespec
+ can be matched. Note that if nothing matches, MATCH_YES is
+ returned (the null string was matched). */
+
+match
+gfc_match_prefix (gfc_typespec *ts)
+{
+ bool seen_type;
+ bool seen_impure;
+ bool found_prefix;
+
+ gfc_clear_attr (&current_attr);
+ seen_type = false;
+ seen_impure = false;
+
+ gcc_assert (!gfc_matching_prefix);
+ gfc_matching_prefix = true;
+
+ do
+ {
+ found_prefix = false;
+
+ /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a
+ corresponding attribute seems natural and distinguishes these
+ procedures from procedure types of PROC_MODULE, which these are
+ as well. */
+ if (gfc_match ("module% ") == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C"))
+ goto error;
+
+ if (!in_module_or_interface ())
+ {
+ gfc_error ("MODULE prefix at %C found outside of a module, "
+ "submodule, or interface");
+ goto error;
+ }
+
+ current_attr.module_procedure = 1;
+ found_prefix = true;
+ }
+
+ if (!seen_type && ts != NULL)
+ {
+ match m;
+ m = gfc_match_decl_type_spec (ts, 0);
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES && gfc_match_space () == MATCH_YES)
+ {
+ seen_type = true;
+ found_prefix = true;
+ }
+ }
+
+ if (gfc_match ("elemental% ") == MATCH_YES)
+ {
+ if (!gfc_add_elemental (&current_attr, NULL))
+ goto error;
+
+ found_prefix = true;
+ }
+
+ if (gfc_match ("pure% ") == MATCH_YES)
+ {
+ if (!gfc_add_pure (&current_attr, NULL))
+ goto error;
+
+ found_prefix = true;
+ }
+
+ if (gfc_match ("recursive% ") == MATCH_YES)
+ {
+ if (!gfc_add_recursive (&current_attr, NULL))
+ goto error;
+
+ found_prefix = true;
+ }
+
+ /* IMPURE is a somewhat special case, as it needs not set an actual
+ attribute but rather only prevents ELEMENTAL routines from being
+ automatically PURE. */
+ if (gfc_match ("impure% ") == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C"))
+ goto error;
+
+ seen_impure = true;
+ found_prefix = true;
+ }
+ }
+ while (found_prefix);
+
+ /* IMPURE and PURE must not both appear, of course. */
+ if (seen_impure && current_attr.pure)
+ {
+ gfc_error ("PURE and IMPURE must not appear both at %C");
+ goto error;
+ }
+
+ /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */
+ if (!seen_impure && current_attr.elemental && !current_attr.pure)
+ {
+ if (!gfc_add_pure (&current_attr, NULL))
+ goto error;
+ }
+
+ /* At this point, the next item is not a prefix. */
+ gcc_assert (gfc_matching_prefix);
+
+ gfc_matching_prefix = false;
+ return MATCH_YES;
+
+error:
+ gcc_assert (gfc_matching_prefix);
+ gfc_matching_prefix = false;
+ return MATCH_ERROR;
+}
+
+
+/* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */
+
+static bool
+copy_prefix (symbol_attribute *dest, locus *where)
+{
+ if (dest->module_procedure)
+ {
+ if (current_attr.elemental)
+ dest->elemental = 1;
+
+ if (current_attr.pure)
+ dest->pure = 1;
+
+ if (current_attr.recursive)
+ dest->recursive = 1;
+
+ /* Module procedures are unusual in that the 'dest' is copied from
+ the interface declaration. However, this is an oportunity to
+ check that the submodule declaration is compliant with the
+ interface. */
+ if (dest->elemental && !current_attr.elemental)
+ {
+ gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is "
+ "missing at %L", where);
+ return false;
+ }
+
+ if (dest->pure && !current_attr.pure)
+ {
+ gfc_error ("PURE prefix in MODULE PROCEDURE interface is "
+ "missing at %L", where);
+ return false;
+ }
+
+ if (dest->recursive && !current_attr.recursive)
+ {
+ gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is "
+ "missing at %L", where);
+ return false;
+ }
+
+ return true;
+ }
+
+ if (current_attr.elemental && !gfc_add_elemental (dest, where))
+ return false;
+
+ if (current_attr.pure && !gfc_add_pure (dest, where))
+ return false;
+
+ if (current_attr.recursive && !gfc_add_recursive (dest, where))
+ return false;
+
+ return true;
+}
+
+
+/* Match a formal argument list or, if typeparam is true, a
+ type_param_name_list. */
+
+match
+gfc_match_formal_arglist (gfc_symbol *progname, int st_flag,
+ int null_flag, bool typeparam)
+{
+ gfc_formal_arglist *head, *tail, *p, *q;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym;
+ match m;
+ gfc_formal_arglist *formal = NULL;
+
+ head = tail = NULL;
+
+ /* Keep the interface formal argument list and null it so that the
+ matching for the new declaration can be done. The numbers and
+ names of the arguments are checked here. The interface formal
+ arguments are retained in formal_arglist and the characteristics
+ are compared in resolve.c(resolve_fl_procedure). See the remark
+ in get_proc_name about the eventual need to copy the formal_arglist
+ and populate the formal namespace of the interface symbol. */
+ if (progname->attr.module_procedure
+ && progname->attr.host_assoc)
+ {
+ formal = progname->formal;
+ progname->formal = NULL;
+ }
+
+ if (gfc_match_char ('(') != MATCH_YES)
+ {
+ if (null_flag)
+ goto ok;
+ return MATCH_NO;
+ }
+
+ if (gfc_match_char (')') == MATCH_YES)
+ {
+ if (typeparam)
+ {
+ gfc_error_now ("A type parameter list is required at %C");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ else
+ goto ok;
+ }
+
+ for (;;)
+ {
+ if (gfc_match_char ('*') == MATCH_YES)
+ {
+ sym = NULL;
+ if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS,
+ "Alternate-return argument at %C"))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ else if (typeparam)
+ gfc_error_now ("A parameter name is required at %C");
+ }
+ else
+ {
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ {
+ if(typeparam)
+ gfc_error_now ("A parameter name is required at %C");
+ goto cleanup;
+ }
+
+ if (!typeparam && gfc_get_symbol (name, NULL, &sym))
+ goto cleanup;
+ else if (typeparam
+ && gfc_get_symbol (name, progname->f2k_derived, &sym))
+ goto cleanup;
+ }
+
+ p = gfc_get_formal_arglist ();
+
+ if (head == NULL)
+ head = tail = p;
+ else
+ {
+ tail->next = p;
+ tail = p;
+ }
+
+ tail->sym = sym;
+
+ /* We don't add the VARIABLE flavor because the name could be a
+ dummy procedure. We don't apply these attributes to formal
+ arguments of statement functions. */
+ if (sym != NULL && !st_flag
+ && (!gfc_add_dummy(&sym->attr, sym->name, NULL)
+ || !gfc_missing_attr (&sym->attr, NULL)))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* The name of a program unit can be in a different namespace,
+ so check for it explicitly. After the statement is accepted,
+ the name is checked for especially in gfc_get_symbol(). */
+ if (gfc_new_block != NULL && sym != NULL && !typeparam
+ && strcmp (sym->name, gfc_new_block->name) == 0)
+ {
+ gfc_error ("Name %qs at %C is the name of the procedure",
+ sym->name);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (gfc_match_char (')') == MATCH_YES)
+ goto ok;
+
+ m = gfc_match_char (',');
+ if (m != MATCH_YES)
+ {
+ if (typeparam)
+ gfc_error_now ("Expected parameter list in type declaration "
+ "at %C");
+ else
+ gfc_error ("Unexpected junk in formal argument list at %C");
+ goto cleanup;
+ }
+ }
+
+ok:
+ /* Check for duplicate symbols in the formal argument list. */
+ if (head != NULL)
+ {
+ for (p = head; p->next; p = p->next)
+ {
+ if (p->sym == NULL)
+ continue;
+
+ for (q = p->next; q; q = q->next)
+ if (p->sym == q->sym)
+ {
+ if (typeparam)
+ gfc_error_now ("Duplicate name %qs in parameter "
+ "list at %C", p->sym->name);
+ else
+ gfc_error ("Duplicate symbol %qs in formal argument "
+ "list at %C", p->sym->name);
+
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+ }
+
+ if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* gfc_error_now used in following and return with MATCH_YES because
+ doing otherwise results in a cascade of extraneous errors and in
+ some cases an ICE in symbol.c(gfc_release_symbol). */
+ if (progname->attr.module_procedure && progname->attr.host_assoc)
+ {
+ bool arg_count_mismatch = false;
+
+ if (!formal && head)
+ arg_count_mismatch = true;
+
+ /* Abbreviated module procedure declaration is not meant to have any
+ formal arguments! */
+ if (!progname->abr_modproc_decl && formal && !head)
+ arg_count_mismatch = true;
+
+ for (p = formal, q = head; p && q; p = p->next, q = q->next)
+ {
+ if ((p->next != NULL && q->next == NULL)
+ || (p->next == NULL && q->next != NULL))
+ arg_count_mismatch = true;
+ else if ((p->sym == NULL && q->sym == NULL)
+ || strcmp (p->sym->name, q->sym->name) == 0)
+ continue;
+ else
+ gfc_error_now ("Mismatch in MODULE PROCEDURE formal "
+ "argument names (%s/%s) at %C",
+ p->sym->name, q->sym->name);
+ }
+
+ if (arg_count_mismatch)
+ gfc_error_now ("Mismatch in number of MODULE PROCEDURE "
+ "formal arguments at %C");
+ }
+
+ return MATCH_YES;
+
+cleanup:
+ gfc_free_formal_arglist (head);
+ return m;
+}
+
+
+/* Match a RESULT specification following a function declaration or
+ ENTRY statement. Also matches the end-of-statement. */
+
+static match
+match_result (gfc_symbol *function, gfc_symbol **result)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *r;
+ match m;
+
+ if (gfc_match (" result (") != MATCH_YES)
+ return MATCH_NO;
+
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ return m;
+
+ /* Get the right paren, and that's it because there could be the
+ bind(c) attribute after the result clause. */
+ if (gfc_match_char (')') != MATCH_YES)
+ {
+ /* TODO: should report the missing right paren here. */
+ return MATCH_ERROR;
+ }
+
+ if (strcmp (function->name, name) == 0)
+ {
+ gfc_error ("RESULT variable at %C must be different than function name");
+ return MATCH_ERROR;
+ }
+
+ if (gfc_get_symbol (name, NULL, &r))
+ return MATCH_ERROR;
+
+ if (!gfc_add_result (&r->attr, r->name, NULL))
+ return MATCH_ERROR;
+
+ *result = r;
+
+ return MATCH_YES;
+}
+
+
+/* Match a function suffix, which could be a combination of a result
+ clause and BIND(C), either one, or neither. The draft does not
+ require them to come in a specific order. */
+
+static match
+gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result)
+{
+ match is_bind_c; /* Found bind(c). */
+ match is_result; /* Found result clause. */
+ match found_match; /* Status of whether we've found a good match. */
+ char peek_char; /* Character we're going to peek at. */
+ bool allow_binding_name;
+
+ /* Initialize to having found nothing. */
+ found_match = MATCH_NO;
+ is_bind_c = MATCH_NO;
+ is_result = MATCH_NO;
+
+ /* Get the next char to narrow between result and bind(c). */
+ gfc_gobble_whitespace ();
+ peek_char = gfc_peek_ascii_char ();
+
+ /* C binding names are not allowed for internal procedures. */
+ if (gfc_current_state () == COMP_CONTAINS
+ && sym->ns->proc_name->attr.flavor != FL_MODULE)
+ allow_binding_name = false;
+ else
+ allow_binding_name = true;
+
+ switch (peek_char)
+ {
+ case 'r':
+ /* Look for result clause. */
+ is_result = match_result (sym, result);
+ if (is_result == MATCH_YES)
+ {
+ /* Now see if there is a bind(c) after it. */
+ is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
+ /* We've found the result clause and possibly bind(c). */
+ found_match = MATCH_YES;
+ }
+ else
+ /* This should only be MATCH_ERROR. */
+ found_match = is_result;
+ break;
+ case 'b':
+ /* Look for bind(c) first. */
+ is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
+ if (is_bind_c == MATCH_YES)
+ {
+ /* Now see if a result clause followed it. */
+ is_result = match_result (sym, result);
+ found_match = MATCH_YES;
+ }
+ else
+ {
+ /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */
+ found_match = MATCH_ERROR;
+ }
+ break;
+ default:
+ gfc_error ("Unexpected junk after function declaration at %C");
+ found_match = MATCH_ERROR;
+ break;
+ }
+
+ if (is_bind_c == MATCH_YES)
+ {
+ /* Fortran 2008 draft allows BIND(C) for internal procedures. */
+ if (gfc_current_state () == COMP_CONTAINS
+ && sym->ns->proc_name->attr.flavor != FL_MODULE
+ && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute "
+ "at %L may not be specified for an internal "
+ "procedure", &gfc_current_locus))
+ return MATCH_ERROR;
+
+ if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1))
+ return MATCH_ERROR;
+ }
+
+ return found_match;
+}
+
+
+/* Procedure pointer return value without RESULT statement:
+ Add "hidden" result variable named "ppr@". */
+
+static bool
+add_hidden_procptr_result (gfc_symbol *sym)
+{
+ bool case1,case2;
+
+ if (gfc_notification_std (GFC_STD_F2003) == ERROR)
+ return false;
+
+ /* First usage case: PROCEDURE and EXTERNAL statements. */
+ case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block ()
+ && strcmp (gfc_current_block ()->name, sym->name) == 0
+ && sym->attr.external;
+ /* Second usage case: INTERFACE statements. */
+ case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous
+ && gfc_state_stack->previous->state == COMP_FUNCTION
+ && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0;
+
+ if (case1 || case2)
+ {
+ gfc_symtree *stree;
+ if (case1)
+ gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false);
+ else
+ {
+ gfc_symtree *st2;
+ gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false);
+ st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@");
+ st2->n.sym = stree->n.sym;
+ stree->n.sym->refs++;
+ }
+ sym->result = stree->n.sym;
+
+ sym->result->attr.proc_pointer = sym->attr.proc_pointer;
+ sym->result->attr.pointer = sym->attr.pointer;
+ sym->result->attr.external = sym->attr.external;
+ sym->result->attr.referenced = sym->attr.referenced;
+ sym->result->ts = sym->ts;
+ sym->attr.proc_pointer = 0;
+ sym->attr.pointer = 0;
+ sym->attr.external = 0;
+ if (sym->result->attr.external && sym->result->attr.pointer)
+ {
+ sym->result->attr.pointer = 0;
+ sym->result->attr.proc_pointer = 1;
+ }
+
+ return gfc_add_result (&sym->result->attr, sym->result->name, NULL);
+ }
+ /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */
+ else if (sym->attr.function && !sym->attr.external && sym->attr.pointer
+ && sym->result && sym->result != sym && sym->result->attr.external
+ && sym == gfc_current_ns->proc_name
+ && sym == sym->result->ns->proc_name
+ && strcmp ("ppr@", sym->result->name) == 0)
+ {
+ sym->result->attr.proc_pointer = 1;
+ sym->attr.pointer = 0;
+ return true;
+ }
+ else
+ return false;
+}
+
+
+/* Match the interface for a PROCEDURE declaration,
+ including brackets (R1212). */
+
+static match
+match_procedure_interface (gfc_symbol **proc_if)
+{
+ match m;
+ gfc_symtree *st;
+ locus old_loc, entry_loc;
+ gfc_namespace *old_ns = gfc_current_ns;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+
+ old_loc = entry_loc = gfc_current_locus;
+ gfc_clear_ts (&current_ts);
+
+ if (gfc_match (" (") != MATCH_YES)
+ {
+ gfc_current_locus = entry_loc;
+ return MATCH_NO;
+ }
+
+ /* Get the type spec. for the procedure interface. */
+ old_loc = gfc_current_locus;
+ m = gfc_match_decl_type_spec (&current_ts, 0);
+ gfc_gobble_whitespace ();
+ if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')'))
+ goto got_ts;
+
+ if (m == MATCH_ERROR)
+ return m;
+
+ /* Procedure interface is itself a procedure. */
+ gfc_current_locus = old_loc;
+ m = gfc_match_name (name);
+
+ /* First look to see if it is already accessible in the current
+ namespace because it is use associated or contained. */
+ st = NULL;
+ if (gfc_find_sym_tree (name, NULL, 0, &st))
+ return MATCH_ERROR;
+
+ /* If it is still not found, then try the parent namespace, if it
+ exists and create the symbol there if it is still not found. */
+ if (gfc_current_ns->parent)
+ gfc_current_ns = gfc_current_ns->parent;
+ if (st == NULL && gfc_get_ha_sym_tree (name, &st))
+ return MATCH_ERROR;
+
+ gfc_current_ns = old_ns;
+ *proc_if = st->n.sym;
+
+ if (*proc_if)
+ {
+ (*proc_if)->refs++;
+ /* Resolve interface if possible. That way, attr.procedure is only set
+ if it is declared by a later procedure-declaration-stmt, which is
+ invalid per F08:C1216 (cf. resolve_procedure_interface). */
+ while ((*proc_if)->ts.interface
+ && *proc_if != (*proc_if)->ts.interface)
+ *proc_if = (*proc_if)->ts.interface;
+
+ if ((*proc_if)->attr.flavor == FL_UNKNOWN
+ && (*proc_if)->ts.type == BT_UNKNOWN
+ && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE,
+ (*proc_if)->name, NULL))
+ return MATCH_ERROR;
+ }
+
+got_ts:
+ if (gfc_match (" )") != MATCH_YES)
+ {
+ gfc_current_locus = entry_loc;
+ return MATCH_NO;
+ }
+
+ return MATCH_YES;
+}
+
+
+/* Match a PROCEDURE declaration (R1211). */
+
+static match
+match_procedure_decl (void)
+{
+ match m;
+ gfc_symbol *sym, *proc_if = NULL;
+ int num;
+ gfc_expr *initializer = NULL;
+
+ /* Parse interface (with brackets). */
+ m = match_procedure_interface (&proc_if);
+ if (m != MATCH_YES)
+ return m;
+
+ /* Parse attributes (with colons). */
+ m = match_attr_spec();
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+
+ if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c)
+ {
+ current_attr.is_bind_c = 1;
+ has_name_equals = 0;
+ curr_binding_label = NULL;
+ }
+
+ /* Get procedure symbols. */
+ for(num=1;;num++)
+ {
+ m = gfc_match_symbol (&sym, 0);
+ if (m == MATCH_NO)
+ goto syntax;
+ else if (m == MATCH_ERROR)
+ return m;
+
+ /* Add current_attr to the symbol attributes. */
+ if (!gfc_copy_attr (&sym->attr, &current_attr, NULL))
+ return MATCH_ERROR;
+
+ if (sym->attr.is_bind_c)
+ {
+ /* Check for C1218. */
+ if (!proc_if || !proc_if->attr.is_bind_c)
+ {
+ gfc_error ("BIND(C) attribute at %C requires "
+ "an interface with BIND(C)");
+ return MATCH_ERROR;
+ }
+ /* Check for C1217. */
+ if (has_name_equals && sym->attr.pointer)
+ {
+ gfc_error ("BIND(C) procedure with NAME may not have "
+ "POINTER attribute at %C");
+ return MATCH_ERROR;
+ }
+ if (has_name_equals && sym->attr.dummy)
+ {
+ gfc_error ("Dummy procedure at %C may not have "
+ "BIND(C) attribute with NAME");
+ return MATCH_ERROR;
+ }
+ /* Set binding label for BIND(C). */
+ if (!set_binding_label (&sym->binding_label, sym->name, num))
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_add_external (&sym->attr, NULL))
+ return MATCH_ERROR;
+
+ if (add_hidden_procptr_result (sym))
+ sym = sym->result;
+
+ if (!gfc_add_proc (&sym->attr, sym->name, NULL))
+ return MATCH_ERROR;
+
+ /* Set interface. */
+ if (proc_if != NULL)
+ {
+ if (sym->ts.type != BT_UNKNOWN)
+ {
+ gfc_error ("Procedure %qs at %L already has basic type of %s",
+ sym->name, &gfc_current_locus,
+ gfc_basic_typename (sym->ts.type));
+ return MATCH_ERROR;
+ }
+ sym->ts.interface = proc_if;
+ sym->attr.untyped = 1;
+ sym->attr.if_source = IFSRC_IFBODY;
+ }
+ else if (current_ts.type != BT_UNKNOWN)
+ {
+ if (!gfc_add_type (sym, &current_ts, &gfc_current_locus))
+ return MATCH_ERROR;
+ sym->ts.interface = gfc_new_symbol ("", gfc_current_ns);
+ sym->ts.interface->ts = current_ts;
+ sym->ts.interface->attr.flavor = FL_PROCEDURE;
+ sym->ts.interface->attr.function = 1;
+ sym->attr.function = 1;
+ sym->attr.if_source = IFSRC_UNKNOWN;
+ }
+
+ if (gfc_match (" =>") == MATCH_YES)
+ {
+ if (!current_attr.pointer)
+ {
+ gfc_error ("Initialization at %C isn't for a pointer variable");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ m = match_pointer_init (&initializer, 1);
+ if (m != MATCH_YES)
+ goto cleanup;
+
+ if (!add_init_expr_to_sym (sym->name, &initializer, &gfc_current_locus))
+ goto cleanup;
+
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ return MATCH_YES;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+syntax:
+ gfc_error ("Syntax error in PROCEDURE statement at %C");
+ return MATCH_ERROR;
+
+cleanup:
+ /* Free stuff up and return. */
+ gfc_free_expr (initializer);
+ return m;
+}
+
+
+static match
+match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc);
+
+
+/* Match a procedure pointer component declaration (R445). */
+
+static match
+match_ppc_decl (void)
+{
+ match m;
+ gfc_symbol *proc_if = NULL;
+ gfc_typespec ts;
+ int num;
+ gfc_component *c;
+ gfc_expr *initializer = NULL;
+ gfc_typebound_proc* tb;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+
+ /* Parse interface (with brackets). */
+ m = match_procedure_interface (&proc_if);
+ if (m != MATCH_YES)
+ goto syntax;
+
+ /* Parse attributes. */
+ tb = XCNEW (gfc_typebound_proc);
+ tb->where = gfc_current_locus;
+ m = match_binding_attributes (tb, false, true);
+ if (m == MATCH_ERROR)
+ return m;
+
+ gfc_clear_attr (&current_attr);
+ current_attr.procedure = 1;
+ current_attr.proc_pointer = 1;
+ current_attr.access = tb->access;
+ current_attr.flavor = FL_PROCEDURE;
+
+ /* Match the colons (required). */
+ if (gfc_match (" ::") != MATCH_YES)
+ {
+ gfc_error ("Expected %<::%> after binding-attributes at %C");
+ return MATCH_ERROR;
+ }
+
+ /* Check for C450. */
+ if (!tb->nopass && proc_if == NULL)
+ {
+ gfc_error("NOPASS or explicit interface required at %C");
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C"))
+ return MATCH_ERROR;
+
+ /* Match PPC names. */
+ ts = current_ts;
+ for(num=1;;num++)
+ {
+ m = gfc_match_name (name);
+ if (m == MATCH_NO)
+ goto syntax;
+ else if (m == MATCH_ERROR)
+ return m;
+
+ if (!gfc_add_component (gfc_current_block(), name, &c))
+ return MATCH_ERROR;
+
+ /* Add current_attr to the symbol attributes. */
+ if (!gfc_copy_attr (&c->attr, &current_attr, NULL))
+ return MATCH_ERROR;
+
+ if (!gfc_add_external (&c->attr, NULL))
+ return MATCH_ERROR;
+
+ if (!gfc_add_proc (&c->attr, name, NULL))
+ return MATCH_ERROR;
+
+ if (num == 1)
+ c->tb = tb;
+ else
+ {
+ c->tb = XCNEW (gfc_typebound_proc);
+ c->tb->where = gfc_current_locus;
+ *c->tb = *tb;
+ }
+
+ /* Set interface. */
+ if (proc_if != NULL)
+ {
+ c->ts.interface = proc_if;
+ c->attr.untyped = 1;
+ c->attr.if_source = IFSRC_IFBODY;
+ }
+ else if (ts.type != BT_UNKNOWN)
+ {
+ c->ts = ts;
+ c->ts.interface = gfc_new_symbol ("", gfc_current_ns);
+ c->ts.interface->result = c->ts.interface;
+ c->ts.interface->ts = ts;
+ c->ts.interface->attr.flavor = FL_PROCEDURE;
+ c->ts.interface->attr.function = 1;
+ c->attr.function = 1;
+ c->attr.if_source = IFSRC_UNKNOWN;
+ }
+
+ if (gfc_match (" =>") == MATCH_YES)
+ {
+ m = match_pointer_init (&initializer, 1);
+ if (m != MATCH_YES)
+ {
+ gfc_free_expr (initializer);
+ return m;
+ }
+ c->initializer = initializer;
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ return MATCH_YES;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+syntax:
+ gfc_error ("Syntax error in procedure pointer component at %C");
+ return MATCH_ERROR;
+}
+
+
+/* Match a PROCEDURE declaration inside an interface (R1206). */
+
+static match
+match_procedure_in_interface (void)
+{
+ match m;
+ gfc_symbol *sym;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ locus old_locus;
+
+ if (current_interface.type == INTERFACE_NAMELESS
+ || current_interface.type == INTERFACE_ABSTRACT)
+ {
+ gfc_error ("PROCEDURE at %C must be in a generic interface");
+ return MATCH_ERROR;
+ }
+
+ /* Check if the F2008 optional double colon appears. */
+ gfc_gobble_whitespace ();
+ old_locus = gfc_current_locus;
+ if (gfc_match ("::") == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_F2008, "double colon in "
+ "MODULE PROCEDURE statement at %L", &old_locus))
+ return MATCH_ERROR;
+ }
+ else
+ gfc_current_locus = old_locus;
+
+ for(;;)
+ {
+ m = gfc_match_name (name);
+ if (m == MATCH_NO)
+ goto syntax;
+ else if (m == MATCH_ERROR)
+ return m;
+ if (gfc_get_symbol (name, gfc_current_ns->parent, &sym))
+ return MATCH_ERROR;
+
+ if (!gfc_add_interface (sym))
+ return MATCH_ERROR;
+
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in PROCEDURE statement at %C");
+ return MATCH_ERROR;
+}
+
+
+/* General matcher for PROCEDURE declarations. */
+
+static match match_procedure_in_type (void);
+
+match
+gfc_match_procedure (void)
+{
+ match m;
+
+ switch (gfc_current_state ())
+ {
+ case COMP_NONE:
+ case COMP_PROGRAM:
+ case COMP_MODULE:
+ case COMP_SUBMODULE:
+ case COMP_SUBROUTINE:
+ case COMP_FUNCTION:
+ case COMP_BLOCK:
+ m = match_procedure_decl ();
+ break;
+ case COMP_INTERFACE:
+ m = match_procedure_in_interface ();
+ break;
+ case COMP_DERIVED:
+ m = match_ppc_decl ();
+ break;
+ case COMP_DERIVED_CONTAINS:
+ m = match_procedure_in_type ();
+ break;
+ default:
+ return MATCH_NO;
+ }
+
+ if (m != MATCH_YES)
+ return m;
+
+ if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C"))
+ return MATCH_ERROR;
+
+ return m;
+}
+
+
+/* Warn if a matched procedure has the same name as an intrinsic; this is
+ simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current
+ parser-state-stack to find out whether we're in a module. */
+
+static void
+do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func)
+{
+ bool in_module;
+
+ in_module = (gfc_state_stack->previous
+ && (gfc_state_stack->previous->state == COMP_MODULE
+ || gfc_state_stack->previous->state == COMP_SUBMODULE));
+
+ gfc_warn_intrinsic_shadow (sym, in_module, func);
+}
+
+
+/* Match a function declaration. */
+
+match
+gfc_match_function_decl (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym, *result;
+ locus old_loc;
+ match m;
+ match suffix_match;
+ match found_match; /* Status returned by match func. */
+
+ if (gfc_current_state () != COMP_NONE
+ && gfc_current_state () != COMP_INTERFACE
+ && gfc_current_state () != COMP_CONTAINS)
+ return MATCH_NO;
+
+ gfc_clear_ts (&current_ts);
+
+ old_loc = gfc_current_locus;
+
+ m = gfc_match_prefix (&current_ts);
+ if (m != MATCH_YES)
+ {
+ gfc_current_locus = old_loc;
+ return m;
+ }
+
+ if (gfc_match ("function% %n", name) != MATCH_YES)
+ {
+ gfc_current_locus = old_loc;
+ return MATCH_NO;
+ }
+
+ if (get_proc_name (name, &sym, false))
+ return MATCH_ERROR;
+
+ if (add_hidden_procptr_result (sym))
+ sym = sym->result;
+
+ if (current_attr.module_procedure)
+ sym->attr.module_procedure = 1;
+
+ gfc_new_block = sym;
+
+ m = gfc_match_formal_arglist (sym, 0, 0);
+ if (m == MATCH_NO)
+ {
+ gfc_error ("Expected formal argument list in function "
+ "definition at %C");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ else if (m == MATCH_ERROR)
+ goto cleanup;
+
+ result = NULL;
+
+ /* According to the draft, the bind(c) and result clause can
+ come in either order after the formal_arg_list (i.e., either
+ can be first, both can exist together or by themselves or neither
+ one). Therefore, the match_result can't match the end of the
+ string, and check for the bind(c) or result clause in either order. */
+ found_match = gfc_match_eos ();
+
+ /* Make sure that it isn't already declared as BIND(C). If it is, it
+ must have been marked BIND(C) with a BIND(C) attribute and that is
+ not allowed for procedures. */
+ if (sym->attr.is_bind_c == 1)
+ {
+ sym->attr.is_bind_c = 0;
+
+ if (gfc_state_stack->previous
+ && gfc_state_stack->previous->state != COMP_SUBMODULE)
+ {
+ locus loc;
+ loc = sym->old_symbol != NULL
+ ? sym->old_symbol->declared_at : gfc_current_locus;
+ gfc_error_now ("BIND(C) attribute at %L can only be used for "
+ "variables or common blocks", &loc);
+ }
+ }
+
+ if (found_match != MATCH_YES)
+ {
+ /* If we haven't found the end-of-statement, look for a suffix. */
+ suffix_match = gfc_match_suffix (sym, &result);
+ if (suffix_match == MATCH_YES)
+ /* Need to get the eos now. */
+ found_match = gfc_match_eos ();
+ else
+ found_match = suffix_match;
+ }
+
+ /* F2018 C1550 (R1526) If MODULE appears in the prefix of a module
+ subprogram and a binding label is specified, it shall be the
+ same as the binding label specified in the corresponding module
+ procedure interface body. */
+ if (sym->attr.is_bind_c && sym->attr.module_procedure && sym->old_symbol
+ && strcmp (sym->name, sym->old_symbol->name) == 0
+ && sym->binding_label && sym->old_symbol->binding_label
+ && strcmp (sym->binding_label, sym->old_symbol->binding_label) != 0)
+ {
+ const char *null = "NULL", *s1, *s2;
+ s1 = sym->binding_label;
+ if (!s1) s1 = null;
+ s2 = sym->old_symbol->binding_label;
+ if (!s2) s2 = null;
+ gfc_error ("Mismatch in BIND(C) names (%qs/%qs) at %C", s1, s2);
+ sym->refs++; /* Needed to avoid an ICE in gfc_release_symbol */
+ return MATCH_ERROR;
+ }
+
+ if(found_match != MATCH_YES)
+ m = MATCH_ERROR;
+ else
+ {
+ /* Make changes to the symbol. */
+ m = MATCH_ERROR;
+
+ if (!gfc_add_function (&sym->attr, sym->name, NULL))
+ goto cleanup;
+
+ if (!gfc_missing_attr (&sym->attr, NULL))
+ goto cleanup;
+
+ if (!copy_prefix (&sym->attr, &sym->declared_at))
+ {
+ if(!sym->attr.module_procedure)
+ goto cleanup;
+ else
+ gfc_error_check ();
+ }
+
+ /* Delay matching the function characteristics until after the
+ specification block by signalling kind=-1. */
+ sym->declared_at = old_loc;
+ if (current_ts.type != BT_UNKNOWN)
+ current_ts.kind = -1;
+ else
+ current_ts.kind = 0;
+
+ if (result == NULL)
+ {
+ if (current_ts.type != BT_UNKNOWN
+ && !gfc_add_type (sym, &current_ts, &gfc_current_locus))
+ goto cleanup;
+ sym->result = sym;
+ }
+ else
+ {
+ if (current_ts.type != BT_UNKNOWN
+ && !gfc_add_type (result, &current_ts, &gfc_current_locus))
+ goto cleanup;
+ sym->result = result;
+ }
+
+ /* Warn if this procedure has the same name as an intrinsic. */
+ do_warn_intrinsic_shadow (sym, true);
+
+ return MATCH_YES;
+ }
+
+cleanup:
+ gfc_current_locus = old_loc;
+ return m;
+}
+
+
+/* This is mostly a copy of parse.c(add_global_procedure) but modified to
+ pass the name of the entry, rather than the gfc_current_block name, and
+ to return false upon finding an existing global entry. */
+
+static bool
+add_global_entry (const char *name, const char *binding_label, bool sub,
+ locus *where)
+{
+ gfc_gsymbol *s;
+ enum gfc_symbol_type type;
+
+ type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION;
+
+ /* Only in Fortran 2003: For procedures with a binding label also the Fortran
+ name is a global identifier. */
+ if (!binding_label || gfc_notification_std (GFC_STD_F2008))
+ {
+ s = gfc_get_gsymbol (name, false);
+
+ if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type))
+ {
+ gfc_global_used (s, where);
+ return false;
+ }
+ else
+ {
+ s->type = type;
+ s->sym_name = name;
+ s->where = *where;
+ s->defined = 1;
+ s->ns = gfc_current_ns;
+ }
+ }
+
+ /* Don't add the symbol multiple times. */
+ if (binding_label
+ && (!gfc_notification_std (GFC_STD_F2008)
+ || strcmp (name, binding_label) != 0))
+ {
+ s = gfc_get_gsymbol (binding_label, true);
+
+ if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type))
+ {
+ gfc_global_used (s, where);
+ return false;
+ }
+ else
+ {
+ s->type = type;
+ s->sym_name = name;
+ s->binding_label = binding_label;
+ s->where = *where;
+ s->defined = 1;
+ s->ns = gfc_current_ns;
+ }
+ }
+
+ return true;
+}
+
+
+/* Match an ENTRY statement. */
+
+match
+gfc_match_entry (void)
+{
+ gfc_symbol *proc;
+ gfc_symbol *result;
+ gfc_symbol *entry;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_compile_state state;
+ match m;
+ gfc_entry_list *el;
+ locus old_loc;
+ bool module_procedure;
+ char peek_char;
+ match is_bind_c;
+
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ return m;
+
+ if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C"))
+ return MATCH_ERROR;
+
+ state = gfc_current_state ();
+ if (state != COMP_SUBROUTINE && state != COMP_FUNCTION)
+ {
+ switch (state)
+ {
+ case COMP_PROGRAM:
+ gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM");
+ break;
+ case COMP_MODULE:
+ gfc_error ("ENTRY statement at %C cannot appear within a MODULE");
+ break;
+ case COMP_SUBMODULE:
+ gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE");
+ break;
+ case COMP_BLOCK_DATA:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "a BLOCK DATA");
+ break;
+ case COMP_INTERFACE:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "an INTERFACE");
+ break;
+ case COMP_STRUCTURE:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "a STRUCTURE block");
+ break;
+ case COMP_DERIVED:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "a DERIVED TYPE block");
+ break;
+ case COMP_IF:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "an IF-THEN block");
+ break;
+ case COMP_DO:
+ case COMP_DO_CONCURRENT:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "a DO block");
+ break;
+ case COMP_SELECT:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "a SELECT block");
+ break;
+ case COMP_FORALL:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "a FORALL block");
+ break;
+ case COMP_WHERE:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "a WHERE block");
+ break;
+ case COMP_CONTAINS:
+ gfc_error ("ENTRY statement at %C cannot appear within "
+ "a contained subprogram");
+ break;
+ default:
+ gfc_error ("Unexpected ENTRY statement at %C");
+ }
+ return MATCH_ERROR;
+ }
+
+ if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION)
+ && gfc_state_stack->previous->state == COMP_INTERFACE)
+ {
+ gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE");
+ return MATCH_ERROR;
+ }
+
+ module_procedure = gfc_current_ns->parent != NULL
+ && gfc_current_ns->parent->proc_name
+ && gfc_current_ns->parent->proc_name->attr.flavor
+ == FL_MODULE;
+
+ if (gfc_current_ns->parent != NULL
+ && gfc_current_ns->parent->proc_name
+ && !module_procedure)
+ {
+ gfc_error("ENTRY statement at %C cannot appear in a "
+ "contained procedure");
+ return MATCH_ERROR;
+ }
+
+ /* Module function entries need special care in get_proc_name
+ because previous references within the function will have
+ created symbols attached to the current namespace. */
+ if (get_proc_name (name, &entry,
+ gfc_current_ns->parent != NULL
+ && module_procedure))
+ return MATCH_ERROR;
+
+ proc = gfc_current_block ();
+
+ /* Make sure that it isn't already declared as BIND(C). If it is, it
+ must have been marked BIND(C) with a BIND(C) attribute and that is
+ not allowed for procedures. */
+ if (entry->attr.is_bind_c == 1)
+ {
+ locus loc;
+
+ entry->attr.is_bind_c = 0;
+
+ loc = entry->old_symbol != NULL
+ ? entry->old_symbol->declared_at : gfc_current_locus;
+ gfc_error_now ("BIND(C) attribute at %L can only be used for "
+ "variables or common blocks", &loc);
+ }
+
+ /* Check what next non-whitespace character is so we can tell if there
+ is the required parens if we have a BIND(C). */
+ old_loc = gfc_current_locus;
+ gfc_gobble_whitespace ();
+ peek_char = gfc_peek_ascii_char ();
+
+ if (state == COMP_SUBROUTINE)
+ {
+ m = gfc_match_formal_arglist (entry, 0, 1);
+ if (m != MATCH_YES)
+ return MATCH_ERROR;
+
+ /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can
+ never be an internal procedure. */
+ is_bind_c = gfc_match_bind_c (entry, true);
+ if (is_bind_c == MATCH_ERROR)
+ return MATCH_ERROR;
+ if (is_bind_c == MATCH_YES)
+ {
+ if (peek_char != '(')
+ {
+ gfc_error ("Missing required parentheses before BIND(C) at %C");
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_add_is_bind_c (&(entry->attr), entry->name,
+ &(entry->declared_at), 1))
+ return MATCH_ERROR;
+
+ }
+
+ if (!gfc_current_ns->parent
+ && !add_global_entry (name, entry->binding_label, true,
+ &old_loc))
+ return MATCH_ERROR;
+
+ /* An entry in a subroutine. */
+ if (!gfc_add_entry (&entry->attr, entry->name, NULL)
+ || !gfc_add_subroutine (&entry->attr, entry->name, NULL))
+ return MATCH_ERROR;
+ }
+ else
+ {
+ /* An entry in a function.
+ We need to take special care because writing
+ ENTRY f()
+ as
+ ENTRY f
+ is allowed, whereas
+ ENTRY f() RESULT (r)
+ can't be written as
+ ENTRY f RESULT (r). */
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ gfc_current_locus = old_loc;
+ /* Match the empty argument list, and add the interface to
+ the symbol. */
+ m = gfc_match_formal_arglist (entry, 0, 1);
+ }
+ else
+ m = gfc_match_formal_arglist (entry, 0, 0);
+
+ if (m != MATCH_YES)
+ return MATCH_ERROR;
+
+ result = NULL;
+
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ if (!gfc_add_entry (&entry->attr, entry->name, NULL)
+ || !gfc_add_function (&entry->attr, entry->name, NULL))
+ return MATCH_ERROR;
+
+ entry->result = entry;
+ }
+ else
+ {
+ m = gfc_match_suffix (entry, &result);
+ if (m == MATCH_NO)
+ gfc_syntax_error (ST_ENTRY);
+ if (m != MATCH_YES)
+ return MATCH_ERROR;
+
+ if (result)
+ {
+ if (!gfc_add_result (&result->attr, result->name, NULL)
+ || !gfc_add_entry (&entry->attr, result->name, NULL)
+ || !gfc_add_function (&entry->attr, result->name, NULL))
+ return MATCH_ERROR;
+ entry->result = result;
+ }
+ else
+ {
+ if (!gfc_add_entry (&entry->attr, entry->name, NULL)
+ || !gfc_add_function (&entry->attr, entry->name, NULL))
+ return MATCH_ERROR;
+ entry->result = entry;
+ }
+ }
+
+ if (!gfc_current_ns->parent
+ && !add_global_entry (name, entry->binding_label, false,
+ &old_loc))
+ return MATCH_ERROR;
+ }
+
+ if (gfc_match_eos () != MATCH_YES)
+ {
+ gfc_syntax_error (ST_ENTRY);
+ return MATCH_ERROR;
+ }
+
+ /* F2018:C1546 An elemental procedure shall not have the BIND attribute. */
+ if (proc->attr.elemental && entry->attr.is_bind_c)
+ {
+ gfc_error ("ENTRY statement at %L with BIND(C) prohibited in an "
+ "elemental procedure", &entry->declared_at);
+ return MATCH_ERROR;
+ }
+
+ entry->attr.recursive = proc->attr.recursive;
+ entry->attr.elemental = proc->attr.elemental;
+ entry->attr.pure = proc->attr.pure;
+
+ el = gfc_get_entry_list ();
+ el->sym = entry;
+ el->next = gfc_current_ns->entries;
+ gfc_current_ns->entries = el;
+ if (el->next)
+ el->id = el->next->id + 1;
+ else
+ el->id = 1;
+
+ new_st.op = EXEC_ENTRY;
+ new_st.ext.entry = el;
+
+ return MATCH_YES;
+}
+
+
+/* Match a subroutine statement, including optional prefixes. */
+
+match
+gfc_match_subroutine (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym;
+ match m;
+ match is_bind_c;
+ char peek_char;
+ bool allow_binding_name;
+ locus loc;
+
+ if (gfc_current_state () != COMP_NONE
+ && gfc_current_state () != COMP_INTERFACE
+ && gfc_current_state () != COMP_CONTAINS)
+ return MATCH_NO;
+
+ m = gfc_match_prefix (NULL);
+ if (m != MATCH_YES)
+ return m;
+
+ m = gfc_match ("subroutine% %n", name);
+ if (m != MATCH_YES)
+ return m;
+
+ if (get_proc_name (name, &sym, false))
+ return MATCH_ERROR;
+
+ /* Set declared_at as it might point to, e.g., a PUBLIC statement, if
+ the symbol existed before. */
+ sym->declared_at = gfc_current_locus;
+
+ if (current_attr.module_procedure)
+ sym->attr.module_procedure = 1;
+
+ if (add_hidden_procptr_result (sym))
+ sym = sym->result;
+
+ gfc_new_block = sym;
+
+ /* Check what next non-whitespace character is so we can tell if there
+ is the required parens if we have a BIND(C). */
+ gfc_gobble_whitespace ();
+ peek_char = gfc_peek_ascii_char ();
+
+ if (!gfc_add_subroutine (&sym->attr, sym->name, NULL))
+ return MATCH_ERROR;
+
+ if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES)
+ return MATCH_ERROR;
+
+ /* Make sure that it isn't already declared as BIND(C). If it is, it
+ must have been marked BIND(C) with a BIND(C) attribute and that is
+ not allowed for procedures. */
+ if (sym->attr.is_bind_c == 1)
+ {
+ sym->attr.is_bind_c = 0;
+
+ if (gfc_state_stack->previous
+ && gfc_state_stack->previous->state != COMP_SUBMODULE)
+ {
+ locus loc;
+ loc = sym->old_symbol != NULL
+ ? sym->old_symbol->declared_at : gfc_current_locus;
+ gfc_error_now ("BIND(C) attribute at %L can only be used for "
+ "variables or common blocks", &loc);
+ }
+ }
+
+ /* C binding names are not allowed for internal procedures. */
+ if (gfc_current_state () == COMP_CONTAINS
+ && sym->ns->proc_name->attr.flavor != FL_MODULE)
+ allow_binding_name = false;
+ else
+ allow_binding_name = true;
+
+ /* Here, we are just checking if it has the bind(c) attribute, and if
+ so, then we need to make sure it's all correct. If it doesn't,
+ we still need to continue matching the rest of the subroutine line. */
+ gfc_gobble_whitespace ();
+ loc = gfc_current_locus;
+ is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
+ if (is_bind_c == MATCH_ERROR)
+ {
+ /* There was an attempt at the bind(c), but it was wrong. An
+ error message should have been printed w/in the gfc_match_bind_c
+ so here we'll just return the MATCH_ERROR. */
+ return MATCH_ERROR;
+ }
+
+ if (is_bind_c == MATCH_YES)
+ {
+ gfc_formal_arglist *arg;
+
+ /* The following is allowed in the Fortran 2008 draft. */
+ if (gfc_current_state () == COMP_CONTAINS
+ && sym->ns->proc_name->attr.flavor != FL_MODULE
+ && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute "
+ "at %L may not be specified for an internal "
+ "procedure", &gfc_current_locus))
+ return MATCH_ERROR;
+
+ if (peek_char != '(')
+ {
+ gfc_error ("Missing required parentheses before BIND(C) at %C");
+ return MATCH_ERROR;
+ }
+
+ /* F2018 C1550 (R1526) If MODULE appears in the prefix of a module
+ subprogram and a binding label is specified, it shall be the
+ same as the binding label specified in the corresponding module
+ procedure interface body. */
+ if (sym->attr.module_procedure && sym->old_symbol
+ && strcmp (sym->name, sym->old_symbol->name) == 0
+ && sym->binding_label && sym->old_symbol->binding_label
+ && strcmp (sym->binding_label, sym->old_symbol->binding_label) != 0)
+ {
+ const char *null = "NULL", *s1, *s2;
+ s1 = sym->binding_label;
+ if (!s1) s1 = null;
+ s2 = sym->old_symbol->binding_label;
+ if (!s2) s2 = null;
+ gfc_error ("Mismatch in BIND(C) names (%qs/%qs) at %C", s1, s2);
+ sym->refs++; /* Needed to avoid an ICE in gfc_release_symbol */
+ return MATCH_ERROR;
+ }
+
+ /* Scan the dummy arguments for an alternate return. */
+ for (arg = sym->formal; arg; arg = arg->next)
+ if (!arg->sym)
+ {
+ gfc_error ("Alternate return dummy argument cannot appear in a "
+ "SUBROUTINE with the BIND(C) attribute at %L", &loc);
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1))
+ return MATCH_ERROR;
+ }
+
+ if (gfc_match_eos () != MATCH_YES)
+ {
+ gfc_syntax_error (ST_SUBROUTINE);
+ return MATCH_ERROR;
+ }
+
+ if (!copy_prefix (&sym->attr, &sym->declared_at))
+ {
+ if(!sym->attr.module_procedure)
+ return MATCH_ERROR;
+ else
+ gfc_error_check ();
+ }
+
+ /* Warn if it has the same name as an intrinsic. */
+ do_warn_intrinsic_shadow (sym, false);
+
+ return MATCH_YES;
+}
+
+
+/* Check that the NAME identifier in a BIND attribute or statement
+ is conform to C identifier rules. */
+
+match
+check_bind_name_identifier (char **name)
+{
+ char *n = *name, *p;
+
+ /* Remove leading spaces. */
+ while (*n == ' ')
+ n++;
+
+ /* On an empty string, free memory and set name to NULL. */
+ if (*n == '\0')
+ {
+ free (*name);
+ *name = NULL;
+ return MATCH_YES;
+ }
+
+ /* Remove trailing spaces. */
+ p = n + strlen(n) - 1;
+ while (*p == ' ')
+ *(p--) = '\0';
+
+ /* Insert the identifier into the symbol table. */
+ p = xstrdup (n);
+ free (*name);
+ *name = p;
+
+ /* Now check that identifier is valid under C rules. */
+ if (ISDIGIT (*p))
+ {
+ gfc_error ("Invalid C identifier in NAME= specifier at %C");
+ return MATCH_ERROR;
+ }
+
+ for (; *p; p++)
+ if (!(ISALNUM (*p) || *p == '_' || *p == '$'))
+ {
+ gfc_error ("Invalid C identifier in NAME= specifier at %C");
+ return MATCH_ERROR;
+ }
+
+ return MATCH_YES;
+}
+
+
+/* Match a BIND(C) specifier, with the optional 'name=' specifier if
+ given, and set the binding label in either the given symbol (if not
+ NULL), or in the current_ts. The symbol may be NULL because we may
+ encounter the BIND(C) before the declaration itself. Return
+ MATCH_NO if what we're looking at isn't a BIND(C) specifier,
+ MATCH_ERROR if it is a BIND(C) clause but an error was encountered,
+ or MATCH_YES if the specifier was correct and the binding label and
+ bind(c) fields were set correctly for the given symbol or the
+ current_ts. If allow_binding_name is false, no binding name may be
+ given. */
+
+match
+gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name)
+{
+ char *binding_label = NULL;
+ gfc_expr *e = NULL;
+
+ /* Initialize the flag that specifies whether we encountered a NAME=
+ specifier or not. */
+ has_name_equals = 0;
+
+ /* This much we have to be able to match, in this order, if
+ there is a bind(c) label. */
+ if (gfc_match (" bind ( c ") != MATCH_YES)
+ return MATCH_NO;
+
+ /* Now see if there is a binding label, or if we've reached the
+ end of the bind(c) attribute without one. */
+ if (gfc_match_char (',') == MATCH_YES)
+ {
+ if (gfc_match (" name = ") != MATCH_YES)
+ {
+ gfc_error ("Syntax error in NAME= specifier for binding label "
+ "at %C");
+ /* should give an error message here */
+ return MATCH_ERROR;
+ }
+
+ has_name_equals = 1;
+
+ if (gfc_match_init_expr (&e) != MATCH_YES)
+ {
+ gfc_free_expr (e);
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_simplify_expr(e, 0))
+ {
+ gfc_error ("NAME= specifier at %C should be a constant expression");
+ gfc_free_expr (e);
+ return MATCH_ERROR;
+ }
+
+ if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER
+ || e->ts.kind != gfc_default_character_kind || e->rank != 0)
+ {
+ gfc_error ("NAME= specifier at %C should be a scalar of "
+ "default character kind");
+ gfc_free_expr(e);
+ return MATCH_ERROR;
+ }
+
+ // Get a C string from the Fortran string constant
+ binding_label = gfc_widechar_to_char (e->value.character.string,
+ e->value.character.length);
+ gfc_free_expr(e);
+
+ // Check that it is valid (old gfc_match_name_C)
+ if (check_bind_name_identifier (&binding_label) != MATCH_YES)
+ return MATCH_ERROR;
+ }
+
+ /* Get the required right paren. */
+ if (gfc_match_char (')') != MATCH_YES)
+ {
+ gfc_error ("Missing closing paren for binding label at %C");
+ return MATCH_ERROR;
+ }
+
+ if (has_name_equals && !allow_binding_name)
+ {
+ gfc_error ("No binding name is allowed in BIND(C) at %C");
+ return MATCH_ERROR;
+ }
+
+ if (has_name_equals && sym != NULL && sym->attr.dummy)
+ {
+ gfc_error ("For dummy procedure %s, no binding name is "
+ "allowed in BIND(C) at %C", sym->name);
+ return MATCH_ERROR;
+ }
+
+
+ /* Save the binding label to the symbol. If sym is null, we're
+ probably matching the typespec attributes of a declaration and
+ haven't gotten the name yet, and therefore, no symbol yet. */
+ if (binding_label)
+ {
+ if (sym != NULL)
+ sym->binding_label = binding_label;
+ else
+ curr_binding_label = binding_label;
+ }
+ else if (allow_binding_name)
+ {
+ /* No binding label, but if symbol isn't null, we
+ can set the label for it here.
+ If name="" or allow_binding_name is false, no C binding name is
+ created. */
+ if (sym != NULL && sym->name != NULL && has_name_equals == 0)
+ sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name));
+ }
+
+ if (has_name_equals && gfc_current_state () == COMP_INTERFACE
+ && current_interface.type == INTERFACE_ABSTRACT)
+ {
+ gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C");
+ return MATCH_ERROR;
+ }
+
+ return MATCH_YES;
+}
+
+
+/* Return nonzero if we're currently compiling a contained procedure. */
+
+static int
+contained_procedure (void)
+{
+ gfc_state_data *s = gfc_state_stack;
+
+ if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION)
+ && s->previous != NULL && s->previous->state == COMP_CONTAINS)
+ return 1;
+
+ return 0;
+}
+
+/* Set the kind of each enumerator. The kind is selected such that it is
+ interoperable with the corresponding C enumeration type, making
+ sure that -fshort-enums is honored. */
+
+static void
+set_enum_kind(void)
+{
+ enumerator_history *current_history = NULL;
+ int kind;
+ int i;
+
+ if (max_enum == NULL || enum_history == NULL)
+ return;
+
+ if (!flag_short_enums)
+ return;
+
+ i = 0;
+ do
+ {
+ kind = gfc_integer_kinds[i++].kind;
+ }
+ while (kind < gfc_c_int_kind
+ && gfc_check_integer_range (max_enum->initializer->value.integer,
+ kind) != ARITH_OK);
+
+ current_history = enum_history;
+ while (current_history != NULL)
+ {
+ current_history->sym->ts.kind = kind;
+ current_history = current_history->next;
+ }
+}
+
+
+/* Match any of the various end-block statements. Returns the type of
+ END to the caller. The END INTERFACE, END IF, END DO, END SELECT
+ and END BLOCK statements cannot be replaced by a single END statement. */
+
+match
+gfc_match_end (gfc_statement *st)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_compile_state state;
+ locus old_loc;
+ const char *block_name;
+ const char *target;
+ int eos_ok;
+ match m;
+ gfc_namespace *parent_ns, *ns, *prev_ns;
+ gfc_namespace **nsp;
+ bool abreviated_modproc_decl = false;
+ bool got_matching_end = false;
+
+ old_loc = gfc_current_locus;
+ if (gfc_match ("end") != MATCH_YES)
+ return MATCH_NO;
+
+ state = gfc_current_state ();
+ block_name = gfc_current_block () == NULL
+ ? NULL : gfc_current_block ()->name;
+
+ switch (state)
+ {
+ case COMP_ASSOCIATE:
+ case COMP_BLOCK:
+ if (startswith (block_name, "block@"))
+ block_name = NULL;
+ break;
+
+ case COMP_CONTAINS:
+ case COMP_DERIVED_CONTAINS:
+ state = gfc_state_stack->previous->state;
+ block_name = gfc_state_stack->previous->sym == NULL
+ ? NULL : gfc_state_stack->previous->sym->name;
+ abreviated_modproc_decl = gfc_state_stack->previous->sym
+ && gfc_state_stack->previous->sym->abr_modproc_decl;
+ break;
+
+ default:
+ break;
+ }
+
+ if (!abreviated_modproc_decl)
+ abreviated_modproc_decl = gfc_current_block ()
+ && gfc_current_block ()->abr_modproc_decl;
+
+ switch (state)
+ {
+ case COMP_NONE:
+ case COMP_PROGRAM:
+ *st = ST_END_PROGRAM;
+ target = " program";
+ eos_ok = 1;
+ break;
+
+ case COMP_SUBROUTINE:
+ *st = ST_END_SUBROUTINE;
+ if (!abreviated_modproc_decl)
+ target = " subroutine";
+ else
+ target = " procedure";
+ eos_ok = !contained_procedure ();
+ break;
+
+ case COMP_FUNCTION:
+ *st = ST_END_FUNCTION;
+ if (!abreviated_modproc_decl)
+ target = " function";
+ else
+ target = " procedure";
+ eos_ok = !contained_procedure ();
+ break;
+
+ case COMP_BLOCK_DATA:
+ *st = ST_END_BLOCK_DATA;
+ target = " block data";
+ eos_ok = 1;
+ break;
+
+ case COMP_MODULE:
+ *st = ST_END_MODULE;
+ target = " module";
+ eos_ok = 1;
+ break;
+
+ case COMP_SUBMODULE:
+ *st = ST_END_SUBMODULE;
+ target = " submodule";
+ eos_ok = 1;
+ break;
+
+ case COMP_INTERFACE:
+ *st = ST_END_INTERFACE;
+ target = " interface";
+ eos_ok = 0;
+ break;
+
+ case COMP_MAP:
+ *st = ST_END_MAP;
+ target = " map";
+ eos_ok = 0;
+ break;
+
+ case COMP_UNION:
+ *st = ST_END_UNION;
+ target = " union";
+ eos_ok = 0;
+ break;
+
+ case COMP_STRUCTURE:
+ *st = ST_END_STRUCTURE;
+ target = " structure";
+ eos_ok = 0;
+ break;
+
+ case COMP_DERIVED:
+ case COMP_DERIVED_CONTAINS:
+ *st = ST_END_TYPE;
+ target = " type";
+ eos_ok = 0;
+ break;
+
+ case COMP_ASSOCIATE:
+ *st = ST_END_ASSOCIATE;
+ target = " associate";
+ eos_ok = 0;
+ break;
+
+ case COMP_BLOCK:
+ case COMP_OMP_STRICTLY_STRUCTURED_BLOCK:
+ *st = ST_END_BLOCK;
+ target = " block";
+ eos_ok = 0;
+ break;
+
+ case COMP_IF:
+ *st = ST_ENDIF;
+ target = " if";
+ eos_ok = 0;
+ break;
+
+ case COMP_DO:
+ case COMP_DO_CONCURRENT:
+ *st = ST_ENDDO;
+ target = " do";
+ eos_ok = 0;
+ break;
+
+ case COMP_CRITICAL:
+ *st = ST_END_CRITICAL;
+ target = " critical";
+ eos_ok = 0;
+ break;
+
+ case COMP_SELECT:
+ case COMP_SELECT_TYPE:
+ case COMP_SELECT_RANK:
+ *st = ST_END_SELECT;
+ target = " select";
+ eos_ok = 0;
+ break;
+
+ case COMP_FORALL:
+ *st = ST_END_FORALL;
+ target = " forall";
+ eos_ok = 0;
+ break;
+
+ case COMP_WHERE:
+ *st = ST_END_WHERE;
+ target = " where";
+ eos_ok = 0;
+ break;
+
+ case COMP_ENUM:
+ *st = ST_END_ENUM;
+ target = " enum";
+ eos_ok = 0;
+ last_initializer = NULL;
+ set_enum_kind ();
+ gfc_free_enum_history ();
+ break;
+
+ default:
+ gfc_error ("Unexpected END statement at %C");
+ goto cleanup;
+ }
+
+ old_loc = gfc_current_locus;
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION))
+ {
+ if (!gfc_notify_std (GFC_STD_F2008, "END statement "
+ "instead of %s statement at %L",
+ abreviated_modproc_decl ? "END PROCEDURE"
+ : gfc_ascii_statement(*st), &old_loc))
+ goto cleanup;
+ }
+ else if (!eos_ok)
+ {
+ /* We would have required END [something]. */
+ gfc_error ("%s statement expected at %L",
+ gfc_ascii_statement (*st), &old_loc);
+ goto cleanup;
+ }
+
+ return MATCH_YES;
+ }
+
+ /* Verify that we've got the sort of end-block that we're expecting. */
+ if (gfc_match (target) != MATCH_YES)
+ {
+ gfc_error ("Expecting %s statement at %L", abreviated_modproc_decl
+ ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc);
+ goto cleanup;
+ }
+ else
+ got_matching_end = true;
+
+ old_loc = gfc_current_locus;
+ /* If we're at the end, make sure a block name wasn't required. */
+ if (gfc_match_eos () == MATCH_YES)
+ {
+
+ if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT
+ && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK
+ && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL)
+ return MATCH_YES;
+
+ if (!block_name)
+ return MATCH_YES;
+
+ gfc_error ("Expected block name of %qs in %s statement at %L",
+ block_name, gfc_ascii_statement (*st), &old_loc);
+
+ return MATCH_ERROR;
+ }
+
+ /* END INTERFACE has a special handler for its several possible endings. */
+ if (*st == ST_END_INTERFACE)
+ return gfc_match_end_interface ();
+
+ /* We haven't hit the end of statement, so what is left must be an
+ end-name. */
+ m = gfc_match_space ();
+ if (m == MATCH_YES)
+ m = gfc_match_name (name);
+
+ if (m == MATCH_NO)
+ gfc_error ("Expected terminating name at %C");
+ if (m != MATCH_YES)
+ goto cleanup;
+
+ if (block_name == NULL)
+ goto syntax;
+
+ /* We have to pick out the declared submodule name from the composite
+ required by F2008:11.2.3 para 2, which ends in the declared name. */
+ if (state == COMP_SUBMODULE)
+ block_name = strchr (block_name, '.') + 1;
+
+ if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0)
+ {
+ gfc_error ("Expected label %qs for %s statement at %C", block_name,
+ gfc_ascii_statement (*st));
+ goto cleanup;
+ }
+ /* Procedure pointer as function result. */
+ else if (strcmp (block_name, "ppr@") == 0
+ && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0)
+ {
+ gfc_error ("Expected label %qs for %s statement at %C",
+ gfc_current_block ()->ns->proc_name->name,
+ gfc_ascii_statement (*st));
+ goto cleanup;
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ return MATCH_YES;
+
+syntax:
+ gfc_syntax_error (*st);
+
+cleanup:
+ gfc_current_locus = old_loc;
+
+ /* If we are missing an END BLOCK, we created a half-ready namespace.
+ Remove it from the parent namespace's sibling list. */
+
+ while (state == COMP_BLOCK && !got_matching_end)
+ {
+ parent_ns = gfc_current_ns->parent;
+
+ nsp = &(gfc_state_stack->previous->tail->ext.block.ns);
+
+ prev_ns = NULL;
+ ns = *nsp;
+ while (ns)
+ {
+ if (ns == gfc_current_ns)
+ {
+ if (prev_ns == NULL)
+ *nsp = NULL;
+ else
+ prev_ns->sibling = ns->sibling;
+ }
+ prev_ns = ns;
+ ns = ns->sibling;
+ }
+
+ gfc_free_namespace (gfc_current_ns);
+ gfc_current_ns = parent_ns;
+ gfc_state_stack = gfc_state_stack->previous;
+ state = gfc_current_state ();
+ }
+
+ return MATCH_ERROR;
+}
+
+
+
+/***************** Attribute declaration statements ****************/
+
+/* Set the attribute of a single variable. */
+
+static match
+attr_decl1 (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_array_spec *as;
+
+ /* Workaround -Wmaybe-uninitialized false positive during
+ profiledbootstrap by initializing them. */
+ gfc_symbol *sym = NULL;
+ locus var_locus;
+ match m;
+
+ as = NULL;
+
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ goto cleanup;
+
+ if (find_special (name, &sym, false))
+ return MATCH_ERROR;
+
+ if (!check_function_name (name))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ var_locus = gfc_current_locus;
+
+ /* Deal with possible array specification for certain attributes. */
+ if (current_attr.dimension
+ || current_attr.codimension
+ || current_attr.allocatable
+ || current_attr.pointer
+ || current_attr.target)
+ {
+ m = gfc_match_array_spec (&as, !current_attr.codimension,
+ !current_attr.dimension
+ && !current_attr.pointer
+ && !current_attr.target);
+ if (m == MATCH_ERROR)
+ goto cleanup;
+
+ if (current_attr.dimension && m == MATCH_NO)
+ {
+ gfc_error ("Missing array specification at %L in DIMENSION "
+ "statement", &var_locus);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (current_attr.dimension && sym->value)
+ {
+ gfc_error ("Dimensions specified for %s at %L after its "
+ "initialization", sym->name, &var_locus);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (current_attr.codimension && m == MATCH_NO)
+ {
+ gfc_error ("Missing array specification at %L in CODIMENSION "
+ "statement", &var_locus);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if ((current_attr.allocatable || current_attr.pointer)
+ && (m == MATCH_YES) && (as->type != AS_DEFERRED))
+ {
+ gfc_error ("Array specification must be deferred at %L", &var_locus);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+
+ /* Update symbol table. DIMENSION attribute is set in
+ gfc_set_array_spec(). For CLASS variables, this must be applied
+ to the first component, or '_data' field. */
+ if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class)
+ {
+ /* gfc_set_array_spec sets sym->attr not CLASS_DATA(sym)->attr. Check
+ for duplicate attribute here. */
+ if (CLASS_DATA(sym)->attr.dimension == 1 && as)
+ {
+ gfc_error ("Duplicate DIMENSION attribute at %C");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, &current_attr, &var_locus))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+ else
+ {
+ if (current_attr.dimension == 0 && current_attr.codimension == 0
+ && !gfc_copy_attr (&sym->attr, &current_attr, &var_locus))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+ }
+
+ if (sym->ts.type == BT_CLASS
+ && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (!gfc_set_array_spec (sym, as, &var_locus))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (sym->attr.cray_pointee && sym->as != NULL)
+ {
+ /* Fix the array spec. */
+ m = gfc_mod_pointee_as (sym->as);
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ }
+
+ if (!gfc_add_attribute (&sym->attr, &var_locus))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if ((current_attr.external || current_attr.intrinsic)
+ && sym->attr.flavor != FL_PROCEDURE
+ && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ add_hidden_procptr_result (sym);
+
+ return MATCH_YES;
+
+cleanup:
+ gfc_free_array_spec (as);
+ return m;
+}
+
+
+/* Generic attribute declaration subroutine. Used for attributes that
+ just have a list of names. */
+
+static match
+attr_decl (void)
+{
+ match m;
+
+ /* Gobble the optional double colon, by simply ignoring the result
+ of gfc_match(). */
+ gfc_match (" ::");
+
+ for (;;)
+ {
+ m = attr_decl1 ();
+ if (m != MATCH_YES)
+ break;
+
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ m = MATCH_YES;
+ break;
+ }
+
+ if (gfc_match_char (',') != MATCH_YES)
+ {
+ gfc_error ("Unexpected character in variable list at %C");
+ m = MATCH_ERROR;
+ break;
+ }
+ }
+
+ return m;
+}
+
+
+/* This routine matches Cray Pointer declarations of the form:
+ pointer ( <pointer>, <pointee> )
+ or
+ pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ...
+ The pointer, if already declared, should be an integer. Otherwise, we
+ set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may
+ be either a scalar, or an array declaration. No space is allocated for
+ the pointee. For the statement
+ pointer (ipt, ar(10))
+ any subsequent uses of ar will be translated (in C-notation) as
+ ar(i) => ((<type> *) ipt)(i)
+ After gimplification, pointee variable will disappear in the code. */
+
+static match
+cray_pointer_decl (void)
+{
+ match m;
+ gfc_array_spec *as = NULL;
+ gfc_symbol *cptr; /* Pointer symbol. */
+ gfc_symbol *cpte; /* Pointee symbol. */
+ locus var_locus;
+ bool done = false;
+
+ while (!done)
+ {
+ if (gfc_match_char ('(') != MATCH_YES)
+ {
+ gfc_error ("Expected %<(%> at %C");
+ return MATCH_ERROR;
+ }
+
+ /* Match pointer. */
+ var_locus = gfc_current_locus;
+ gfc_clear_attr (&current_attr);
+ gfc_add_cray_pointer (&current_attr, &var_locus);
+ current_ts.type = BT_INTEGER;
+ current_ts.kind = gfc_index_integer_kind;
+
+ m = gfc_match_symbol (&cptr, 0);
+ if (m != MATCH_YES)
+ {
+ gfc_error ("Expected variable name at %C");
+ return m;
+ }
+
+ if (!gfc_add_cray_pointer (&cptr->attr, &var_locus))
+ return MATCH_ERROR;
+
+ gfc_set_sym_referenced (cptr);
+
+ if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */
+ {
+ cptr->ts.type = BT_INTEGER;
+ cptr->ts.kind = gfc_index_integer_kind;
+ }
+ else if (cptr->ts.type != BT_INTEGER)
+ {
+ gfc_error ("Cray pointer at %C must be an integer");
+ return MATCH_ERROR;
+ }
+ else if (cptr->ts.kind < gfc_index_integer_kind)
+ gfc_warning (0, "Cray pointer at %C has %d bytes of precision;"
+ " memory addresses require %d bytes",
+ cptr->ts.kind, gfc_index_integer_kind);
+
+ if (gfc_match_char (',') != MATCH_YES)
+ {
+ gfc_error ("Expected \",\" at %C");
+ return MATCH_ERROR;
+ }
+
+ /* Match Pointee. */
+ var_locus = gfc_current_locus;
+ gfc_clear_attr (&current_attr);
+ gfc_add_cray_pointee (&current_attr, &var_locus);
+ current_ts.type = BT_UNKNOWN;
+ current_ts.kind = 0;
+
+ m = gfc_match_symbol (&cpte, 0);
+ if (m != MATCH_YES)
+ {
+ gfc_error ("Expected variable name at %C");
+ return m;
+ }
+
+ /* Check for an optional array spec. */
+ m = gfc_match_array_spec (&as, true, false);
+ if (m == MATCH_ERROR)
+ {
+ gfc_free_array_spec (as);
+ return m;
+ }
+ else if (m == MATCH_NO)
+ {
+ gfc_free_array_spec (as);
+ as = NULL;
+ }
+
+ if (!gfc_add_cray_pointee (&cpte->attr, &var_locus))
+ return MATCH_ERROR;
+
+ gfc_set_sym_referenced (cpte);
+
+ if (cpte->as == NULL)
+ {
+ if (!gfc_set_array_spec (cpte, as, &var_locus))
+ gfc_internal_error ("Cannot set Cray pointee array spec.");
+ }
+ else if (as != NULL)
+ {
+ gfc_error ("Duplicate array spec for Cray pointee at %C");
+ gfc_free_array_spec (as);
+ return MATCH_ERROR;
+ }
+
+ as = NULL;
+
+ if (cpte->as != NULL)
+ {
+ /* Fix array spec. */
+ m = gfc_mod_pointee_as (cpte->as);
+ if (m == MATCH_ERROR)
+ return m;
+ }
+
+ /* Point the Pointee at the Pointer. */
+ cpte->cp_pointer = cptr;
+
+ if (gfc_match_char (')') != MATCH_YES)
+ {
+ gfc_error ("Expected \")\" at %C");
+ return MATCH_ERROR;
+ }
+ m = gfc_match_char (',');
+ if (m != MATCH_YES)
+ done = true; /* Stop searching for more declarations. */
+
+ }
+
+ if (m == MATCH_ERROR /* Failed when trying to find ',' above. */
+ || gfc_match_eos () != MATCH_YES)
+ {
+ gfc_error ("Expected %<,%> or end of statement at %C");
+ return MATCH_ERROR;
+ }
+ return MATCH_YES;
+}
+
+
+match
+gfc_match_external (void)
+{
+
+ gfc_clear_attr (&current_attr);
+ current_attr.external = 1;
+
+ return attr_decl ();
+}
+
+
+match
+gfc_match_intent (void)
+{
+ sym_intent intent;
+
+ /* This is not allowed within a BLOCK construct! */
+ if (gfc_current_state () == COMP_BLOCK)
+ {
+ gfc_error ("INTENT is not allowed inside of BLOCK at %C");
+ return MATCH_ERROR;
+ }
+
+ intent = match_intent_spec ();
+ if (intent == INTENT_UNKNOWN)
+ return MATCH_ERROR;
+
+ gfc_clear_attr (&current_attr);
+ current_attr.intent = intent;
+
+ return attr_decl ();
+}
+
+
+match
+gfc_match_intrinsic (void)
+{
+
+ gfc_clear_attr (&current_attr);
+ current_attr.intrinsic = 1;
+
+ return attr_decl ();
+}
+
+
+match
+gfc_match_optional (void)
+{
+ /* This is not allowed within a BLOCK construct! */
+ if (gfc_current_state () == COMP_BLOCK)
+ {
+ gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C");
+ return MATCH_ERROR;
+ }
+
+ gfc_clear_attr (&current_attr);
+ current_attr.optional = 1;
+
+ return attr_decl ();
+}
+
+
+match
+gfc_match_pointer (void)
+{
+ gfc_gobble_whitespace ();
+ if (gfc_peek_ascii_char () == '(')
+ {
+ if (!flag_cray_pointer)
+ {
+ gfc_error ("Cray pointer declaration at %C requires "
+ "%<-fcray-pointer%> flag");
+ return MATCH_ERROR;
+ }
+ return cray_pointer_decl ();
+ }
+ else
+ {
+ gfc_clear_attr (&current_attr);
+ current_attr.pointer = 1;
+
+ return attr_decl ();
+ }
+}
+
+
+match
+gfc_match_allocatable (void)
+{
+ gfc_clear_attr (&current_attr);
+ current_attr.allocatable = 1;
+
+ return attr_decl ();
+}
+
+
+match
+gfc_match_codimension (void)
+{
+ gfc_clear_attr (&current_attr);
+ current_attr.codimension = 1;
+
+ return attr_decl ();
+}
+
+
+match
+gfc_match_contiguous (void)
+{
+ if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C"))
+ return MATCH_ERROR;
+
+ gfc_clear_attr (&current_attr);
+ current_attr.contiguous = 1;
+
+ return attr_decl ();
+}
+
+
+match
+gfc_match_dimension (void)
+{
+ gfc_clear_attr (&current_attr);
+ current_attr.dimension = 1;
+
+ return attr_decl ();
+}
+
+
+match
+gfc_match_target (void)
+{
+ gfc_clear_attr (&current_attr);
+ current_attr.target = 1;
+
+ return attr_decl ();
+}
+
+
+/* Match the list of entities being specified in a PUBLIC or PRIVATE
+ statement. */
+
+static match
+access_attr_decl (gfc_statement st)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ interface_type type;
+ gfc_user_op *uop;
+ gfc_symbol *sym, *dt_sym;
+ gfc_intrinsic_op op;
+ match m;
+ gfc_access access = (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE;
+
+ if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
+ goto done;
+
+ for (;;)
+ {
+ m = gfc_match_generic_spec (&type, name, &op);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ goto done;
+
+ switch (type)
+ {
+ case INTERFACE_NAMELESS:
+ case INTERFACE_ABSTRACT:
+ goto syntax;
+
+ case INTERFACE_GENERIC:
+ case INTERFACE_DTIO:
+
+ if (gfc_get_symbol (name, NULL, &sym))
+ goto done;
+
+ if (type == INTERFACE_DTIO
+ && gfc_current_ns->proc_name
+ && gfc_current_ns->proc_name->attr.flavor == FL_MODULE
+ && sym->attr.flavor == FL_UNKNOWN)
+ sym->attr.flavor = FL_PROCEDURE;
+
+ if (!gfc_add_access (&sym->attr, access, sym->name, NULL))
+ goto done;
+
+ if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym))
+ && !gfc_add_access (&dt_sym->attr, access, sym->name, NULL))
+ goto done;
+
+ break;
+
+ case INTERFACE_INTRINSIC_OP:
+ if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN)
+ {
+ gfc_intrinsic_op other_op;
+
+ gfc_current_ns->operator_access[op] = access;
+
+ /* Handle the case if there is another op with the same
+ function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */
+ other_op = gfc_equivalent_op (op);
+
+ if (other_op != INTRINSIC_NONE)
+ gfc_current_ns->operator_access[other_op] = access;
+ }
+ else
+ {
+ gfc_error ("Access specification of the %s operator at %C has "
+ "already been specified", gfc_op2string (op));
+ goto done;
+ }
+
+ break;
+
+ case INTERFACE_USER_OP:
+ uop = gfc_get_uop (name);
+
+ if (uop->access == ACCESS_UNKNOWN)
+ {
+ uop->access = access;
+ }
+ else
+ {
+ gfc_error ("Access specification of the .%s. operator at %C "
+ "has already been specified", uop->name);
+ goto done;
+ }
+
+ break;
+ }
+
+ if (gfc_match_char (',') == MATCH_NO)
+ break;
+ }
+
+ if (gfc_match_eos () != MATCH_YES)
+ goto syntax;
+ return MATCH_YES;
+
+syntax:
+ gfc_syntax_error (st);
+
+done:
+ return MATCH_ERROR;
+}
+
+
+match
+gfc_match_protected (void)
+{
+ gfc_symbol *sym;
+ match m;
+ char c;
+
+ /* PROTECTED has already been seen, but must be followed by whitespace
+ or ::. */
+ c = gfc_peek_ascii_char ();
+ if (!gfc_is_whitespace (c) && c != ':')
+ return MATCH_NO;
+
+ if (!gfc_current_ns->proc_name
+ || gfc_current_ns->proc_name->attr.flavor != FL_MODULE)
+ {
+ gfc_error ("PROTECTED at %C only allowed in specification "
+ "part of a module");
+ return MATCH_ERROR;
+
+ }
+
+ gfc_match (" ::");
+
+ if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C"))
+ return MATCH_ERROR;
+
+ /* PROTECTED has an entity-list. */
+ if (gfc_match_eos () == MATCH_YES)
+ goto syntax;
+
+ for(;;)
+ {
+ m = gfc_match_symbol (&sym, 0);
+ switch (m)
+ {
+ case MATCH_YES:
+ if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus))
+ return MATCH_ERROR;
+ goto next_item;
+
+ case MATCH_NO:
+ break;
+
+ case MATCH_ERROR:
+ return MATCH_ERROR;
+ }
+
+ next_item:
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in PROTECTED statement at %C");
+ return MATCH_ERROR;
+}
+
+
+/* The PRIVATE statement is a bit weird in that it can be an attribute
+ declaration, but also works as a standalone statement inside of a
+ type declaration or a module. */
+
+match
+gfc_match_private (gfc_statement *st)
+{
+ gfc_state_data *prev;
+
+ if (gfc_match ("private") != MATCH_YES)
+ return MATCH_NO;
+
+ /* Try matching PRIVATE without an access-list. */
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ prev = gfc_state_stack->previous;
+ if (gfc_current_state () != COMP_MODULE
+ && !(gfc_current_state () == COMP_DERIVED
+ && prev && prev->state == COMP_MODULE)
+ && !(gfc_current_state () == COMP_DERIVED_CONTAINS
+ && prev->previous && prev->previous->state == COMP_MODULE))
+ {
+ gfc_error ("PRIVATE statement at %C is only allowed in the "
+ "specification part of a module");
+ return MATCH_ERROR;
+ }
+
+ *st = ST_PRIVATE;
+ return MATCH_YES;
+ }
+
+ /* At this point in free-form source code, PRIVATE must be followed
+ by whitespace or ::. */
+ if (gfc_current_form == FORM_FREE)
+ {
+ char c = gfc_peek_ascii_char ();
+ if (!gfc_is_whitespace (c) && c != ':')
+ return MATCH_NO;
+ }
+
+ prev = gfc_state_stack->previous;
+ if (gfc_current_state () != COMP_MODULE
+ && !(gfc_current_state () == COMP_DERIVED
+ && prev && prev->state == COMP_MODULE)
+ && !(gfc_current_state () == COMP_DERIVED_CONTAINS
+ && prev->previous && prev->previous->state == COMP_MODULE))
+ {
+ gfc_error ("PRIVATE statement at %C is only allowed in the "
+ "specification part of a module");
+ return MATCH_ERROR;
+ }
+
+ *st = ST_ATTR_DECL;
+ return access_attr_decl (ST_PRIVATE);
+}
+
+
+match
+gfc_match_public (gfc_statement *st)
+{
+ if (gfc_match ("public") != MATCH_YES)
+ return MATCH_NO;
+
+ /* Try matching PUBLIC without an access-list. */
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ if (gfc_current_state () != COMP_MODULE)
+ {
+ gfc_error ("PUBLIC statement at %C is only allowed in the "
+ "specification part of a module");
+ return MATCH_ERROR;
+ }
+
+ *st = ST_PUBLIC;
+ return MATCH_YES;
+ }
+
+ /* At this point in free-form source code, PUBLIC must be followed
+ by whitespace or ::. */
+ if (gfc_current_form == FORM_FREE)
+ {
+ char c = gfc_peek_ascii_char ();
+ if (!gfc_is_whitespace (c) && c != ':')
+ return MATCH_NO;
+ }
+
+ if (gfc_current_state () != COMP_MODULE)
+ {
+ gfc_error ("PUBLIC statement at %C is only allowed in the "
+ "specification part of a module");
+ return MATCH_ERROR;
+ }
+
+ *st = ST_ATTR_DECL;
+ return access_attr_decl (ST_PUBLIC);
+}
+
+
+/* Workhorse for gfc_match_parameter. */
+
+static match
+do_parm (void)
+{
+ gfc_symbol *sym;
+ gfc_expr *init;
+ match m;
+ bool t;
+
+ m = gfc_match_symbol (&sym, 0);
+ if (m == MATCH_NO)
+ gfc_error ("Expected variable name at %C in PARAMETER statement");
+
+ if (m != MATCH_YES)
+ return m;
+
+ if (gfc_match_char ('=') == MATCH_NO)
+ {
+ gfc_error ("Expected = sign in PARAMETER statement at %C");
+ return MATCH_ERROR;
+ }
+
+ m = gfc_match_init_expr (&init);
+ if (m == MATCH_NO)
+ gfc_error ("Expected expression at %C in PARAMETER statement");
+ if (m != MATCH_YES)
+ return m;
+
+ if (sym->ts.type == BT_UNKNOWN
+ && !gfc_set_default_type (sym, 1, NULL))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (!gfc_check_assign_symbol (sym, NULL, init)
+ || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ if (sym->value)
+ {
+ gfc_error ("Initializing already initialized variable at %C");
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus);
+ return (t) ? MATCH_YES : MATCH_ERROR;
+
+cleanup:
+ gfc_free_expr (init);
+ return m;
+}
+
+
+/* Match a parameter statement, with the weird syntax that these have. */
+
+match
+gfc_match_parameter (void)
+{
+ const char *term = " )%t";
+ match m;
+
+ if (gfc_match_char ('(') == MATCH_NO)
+ {
+ /* With legacy PARAMETER statements, don't expect a terminating ')'. */
+ if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C"))
+ return MATCH_NO;
+ term = " %t";
+ }
+
+ for (;;)
+ {
+ m = do_parm ();
+ if (m != MATCH_YES)
+ break;
+
+ if (gfc_match (term) == MATCH_YES)
+ break;
+
+ if (gfc_match_char (',') != MATCH_YES)
+ {
+ gfc_error ("Unexpected characters in PARAMETER statement at %C");
+ m = MATCH_ERROR;
+ break;
+ }
+ }
+
+ return m;
+}
+
+
+match
+gfc_match_automatic (void)
+{
+ gfc_symbol *sym;
+ match m;
+ bool seen_symbol = false;
+
+ if (!flag_dec_static)
+ {
+ gfc_error ("%s at %C is a DEC extension, enable with "
+ "%<-fdec-static%>",
+ "AUTOMATIC"
+ );
+ return MATCH_ERROR;
+ }
+
+ gfc_match (" ::");
+
+ for (;;)
+ {
+ m = gfc_match_symbol (&sym, 0);
+ switch (m)
+ {
+ case MATCH_NO:
+ break;
+
+ case MATCH_ERROR:
+ return MATCH_ERROR;
+
+ case MATCH_YES:
+ if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus))
+ return MATCH_ERROR;
+ seen_symbol = true;
+ break;
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ if (!seen_symbol)
+ {
+ gfc_error ("Expected entity-list in AUTOMATIC statement at %C");
+ return MATCH_ERROR;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in AUTOMATIC statement at %C");
+ return MATCH_ERROR;
+}
+
+
+match
+gfc_match_static (void)
+{
+ gfc_symbol *sym;
+ match m;
+ bool seen_symbol = false;
+
+ if (!flag_dec_static)
+ {
+ gfc_error ("%s at %C is a DEC extension, enable with "
+ "%<-fdec-static%>",
+ "STATIC");
+ return MATCH_ERROR;
+ }
+
+ gfc_match (" ::");
+
+ for (;;)
+ {
+ m = gfc_match_symbol (&sym, 0);
+ switch (m)
+ {
+ case MATCH_NO:
+ break;
+
+ case MATCH_ERROR:
+ return MATCH_ERROR;
+
+ case MATCH_YES:
+ if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name,
+ &gfc_current_locus))
+ return MATCH_ERROR;
+ seen_symbol = true;
+ break;
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ if (!seen_symbol)
+ {
+ gfc_error ("Expected entity-list in STATIC statement at %C");
+ return MATCH_ERROR;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in STATIC statement at %C");
+ return MATCH_ERROR;
+}
+
+
+/* Save statements have a special syntax. */
+
+match
+gfc_match_save (void)
+{
+ char n[GFC_MAX_SYMBOL_LEN+1];
+ gfc_common_head *c;
+ gfc_symbol *sym;
+ match m;
+
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ if (gfc_current_ns->seen_save)
+ {
+ if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C "
+ "follows previous SAVE statement"))
+ return MATCH_ERROR;
+ }
+
+ gfc_current_ns->save_all = gfc_current_ns->seen_save = 1;
+ return MATCH_YES;
+ }
+
+ if (gfc_current_ns->save_all)
+ {
+ if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows "
+ "blanket SAVE statement"))
+ return MATCH_ERROR;
+ }
+
+ gfc_match (" ::");
+
+ for (;;)
+ {
+ m = gfc_match_symbol (&sym, 0);
+ switch (m)
+ {
+ case MATCH_YES:
+ if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name,
+ &gfc_current_locus))
+ return MATCH_ERROR;
+ goto next_item;
+
+ case MATCH_NO:
+ break;
+
+ case MATCH_ERROR:
+ return MATCH_ERROR;
+ }
+
+ m = gfc_match (" / %n /", &n);
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ if (m == MATCH_NO)
+ goto syntax;
+
+ c = gfc_get_common (n, 0);
+ c->saved = 1;
+
+ gfc_current_ns->seen_save = 1;
+
+ next_item:
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ if (gfc_current_ns->seen_save)
+ {
+ gfc_error ("Syntax error in SAVE statement at %C");
+ return MATCH_ERROR;
+ }
+ else
+ return MATCH_NO;
+}
+
+
+match
+gfc_match_value (void)
+{
+ gfc_symbol *sym;
+ match m;
+
+ /* This is not allowed within a BLOCK construct! */
+ if (gfc_current_state () == COMP_BLOCK)
+ {
+ gfc_error ("VALUE is not allowed inside of BLOCK at %C");
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C"))
+ return MATCH_ERROR;
+
+ if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
+ {
+ return MATCH_ERROR;
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ goto syntax;
+
+ for(;;)
+ {
+ m = gfc_match_symbol (&sym, 0);
+ switch (m)
+ {
+ case MATCH_YES:
+ if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus))
+ return MATCH_ERROR;
+ goto next_item;
+
+ case MATCH_NO:
+ break;
+
+ case MATCH_ERROR:
+ return MATCH_ERROR;
+ }
+
+ next_item:
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in VALUE statement at %C");
+ return MATCH_ERROR;
+}
+
+
+match
+gfc_match_volatile (void)
+{
+ gfc_symbol *sym;
+ char *name;
+ match m;
+
+ if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C"))
+ return MATCH_ERROR;
+
+ if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
+ {
+ return MATCH_ERROR;
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ goto syntax;
+
+ for(;;)
+ {
+ /* VOLATILE is special because it can be added to host-associated
+ symbols locally. Except for coarrays. */
+ m = gfc_match_symbol (&sym, 1);
+ switch (m)
+ {
+ case MATCH_YES:
+ name = XCNEWVAR (char, strlen (sym->name) + 1);
+ strcpy (name, sym->name);
+ if (!check_function_name (name))
+ return MATCH_ERROR;
+ /* F2008, C560+C561. VOLATILE for host-/use-associated variable or
+ for variable in a BLOCK which is defined outside of the BLOCK. */
+ if (sym->ns != gfc_current_ns && sym->attr.codimension)
+ {
+ gfc_error ("Specifying VOLATILE for coarray variable %qs at "
+ "%C, which is use-/host-associated", sym->name);
+ return MATCH_ERROR;
+ }
+ if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus))
+ return MATCH_ERROR;
+ goto next_item;
+
+ case MATCH_NO:
+ break;
+
+ case MATCH_ERROR:
+ return MATCH_ERROR;
+ }
+
+ next_item:
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in VOLATILE statement at %C");
+ return MATCH_ERROR;
+}
+
+
+match
+gfc_match_asynchronous (void)
+{
+ gfc_symbol *sym;
+ char *name;
+ match m;
+
+ if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C"))
+ return MATCH_ERROR;
+
+ if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
+ {
+ return MATCH_ERROR;
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ goto syntax;
+
+ for(;;)
+ {
+ /* ASYNCHRONOUS is special because it can be added to host-associated
+ symbols locally. */
+ m = gfc_match_symbol (&sym, 1);
+ switch (m)
+ {
+ case MATCH_YES:
+ name = XCNEWVAR (char, strlen (sym->name) + 1);
+ strcpy (name, sym->name);
+ if (!check_function_name (name))
+ return MATCH_ERROR;
+ if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus))
+ return MATCH_ERROR;
+ goto next_item;
+
+ case MATCH_NO:
+ break;
+
+ case MATCH_ERROR:
+ return MATCH_ERROR;
+ }
+
+ next_item:
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in ASYNCHRONOUS statement at %C");
+ return MATCH_ERROR;
+}
+
+
+/* Match a module procedure statement in a submodule. */
+
+match
+gfc_match_submod_proc (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym, *fsym;
+ match m;
+ gfc_formal_arglist *formal, *head, *tail;
+
+ if (gfc_current_state () != COMP_CONTAINS
+ || !(gfc_state_stack->previous
+ && (gfc_state_stack->previous->state == COMP_SUBMODULE
+ || gfc_state_stack->previous->state == COMP_MODULE)))
+ return MATCH_NO;
+
+ m = gfc_match (" module% procedure% %n", name);
+ if (m != MATCH_YES)
+ return m;
+
+ if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration "
+ "at %C"))
+ return MATCH_ERROR;
+
+ if (get_proc_name (name, &sym, false))
+ return MATCH_ERROR;
+
+ /* Make sure that the result field is appropriately filled. */
+ if (sym->tlink && sym->tlink->attr.function)
+ {
+ if (sym->tlink->result && sym->tlink->result != sym->tlink)
+ {
+ sym->result = sym->tlink->result;
+ if (!sym->result->attr.use_assoc)
+ {
+ gfc_symtree *st = gfc_new_symtree (&gfc_current_ns->sym_root,
+ sym->result->name);
+ st->n.sym = sym->result;
+ sym->result->refs++;
+ }
+ }
+ else
+ sym->result = sym;
+ }
+
+ /* Set declared_at as it might point to, e.g., a PUBLIC statement, if
+ the symbol existed before. */
+ sym->declared_at = gfc_current_locus;
+
+ if (!sym->attr.module_procedure)
+ return MATCH_ERROR;
+
+ /* Signal match_end to expect "end procedure". */
+ sym->abr_modproc_decl = 1;
+
+ /* Change from IFSRC_IFBODY coming from the interface declaration. */
+ sym->attr.if_source = IFSRC_DECL;
+
+ gfc_new_block = sym;
+
+ /* Make a new formal arglist with the symbols in the procedure
+ namespace. */
+ head = tail = NULL;
+ for (formal = sym->formal; formal && formal->sym; formal = formal->next)
+ {
+ if (formal == sym->formal)
+ head = tail = gfc_get_formal_arglist ();
+ else
+ {
+ tail->next = gfc_get_formal_arglist ();
+ tail = tail->next;
+ }
+
+ if (gfc_copy_dummy_sym (&fsym, formal->sym, 0))
+ goto cleanup;
+
+ tail->sym = fsym;
+ gfc_set_sym_referenced (fsym);
+ }
+
+ /* The dummy symbols get cleaned up, when the formal_namespace of the
+ interface declaration is cleared. This allows us to add the
+ explicit interface as is done for other type of procedure. */
+ if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head,
+ &gfc_current_locus))
+ return MATCH_ERROR;
+
+ if (gfc_match_eos () != MATCH_YES)
+ {
+ /* Unset st->n.sym. Note: in reject_statement (), the symbol changes are
+ undone, such that the st->n.sym->formal points to the original symbol;
+ if now this namespace is finalized, the formal namespace is freed,
+ but it might be still needed in the parent namespace. */
+ gfc_symtree *st = gfc_find_symtree (gfc_current_ns->sym_root, sym->name);
+ st->n.sym = NULL;
+ gfc_free_symbol (sym->tlink);
+ sym->tlink = NULL;
+ sym->refs--;
+ gfc_syntax_error (ST_MODULE_PROC);
+ return MATCH_ERROR;
+ }
+
+ return MATCH_YES;
+
+cleanup:
+ gfc_free_formal_arglist (head);
+ return MATCH_ERROR;
+}
+
+
+/* Match a module procedure statement. Note that we have to modify
+ symbols in the parent's namespace because the current one was there
+ to receive symbols that are in an interface's formal argument list. */
+
+match
+gfc_match_modproc (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym;
+ match m;
+ locus old_locus;
+ gfc_namespace *module_ns;
+ gfc_interface *old_interface_head, *interface;
+
+ if ((gfc_state_stack->state != COMP_INTERFACE
+ && gfc_state_stack->state != COMP_CONTAINS)
+ || gfc_state_stack->previous == NULL
+ || current_interface.type == INTERFACE_NAMELESS
+ || current_interface.type == INTERFACE_ABSTRACT)
+ {
+ gfc_error ("MODULE PROCEDURE at %C must be in a generic module "
+ "interface");
+ return MATCH_ERROR;
+ }
+
+ module_ns = gfc_current_ns->parent;
+ for (; module_ns; module_ns = module_ns->parent)
+ if (module_ns->proc_name->attr.flavor == FL_MODULE
+ || module_ns->proc_name->attr.flavor == FL_PROGRAM
+ || (module_ns->proc_name->attr.flavor == FL_PROCEDURE
+ && !module_ns->proc_name->attr.contained))
+ break;
+
+ if (module_ns == NULL)
+ return MATCH_ERROR;
+
+ /* Store the current state of the interface. We will need it if we
+ end up with a syntax error and need to recover. */
+ old_interface_head = gfc_current_interface_head ();
+
+ /* Check if the F2008 optional double colon appears. */
+ gfc_gobble_whitespace ();
+ old_locus = gfc_current_locus;
+ if (gfc_match ("::") == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_F2008, "double colon in "
+ "MODULE PROCEDURE statement at %L", &old_locus))
+ return MATCH_ERROR;
+ }
+ else
+ gfc_current_locus = old_locus;
+
+ for (;;)
+ {
+ bool last = false;
+ old_locus = gfc_current_locus;
+
+ m = gfc_match_name (name);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m != MATCH_YES)
+ return MATCH_ERROR;
+
+ /* Check for syntax error before starting to add symbols to the
+ current namespace. */
+ if (gfc_match_eos () == MATCH_YES)
+ last = true;
+
+ if (!last && gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+
+ /* Now we're sure the syntax is valid, we process this item
+ further. */
+ if (gfc_get_symbol (name, module_ns, &sym))
+ return MATCH_ERROR;
+
+ if (sym->attr.intrinsic)
+ {
+ gfc_error ("Intrinsic procedure at %L cannot be a MODULE "
+ "PROCEDURE", &old_locus);
+ return MATCH_ERROR;
+ }
+
+ if (sym->attr.proc != PROC_MODULE
+ && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL))
+ return MATCH_ERROR;
+
+ if (!gfc_add_interface (sym))
+ return MATCH_ERROR;
+
+ sym->attr.mod_proc = 1;
+ sym->declared_at = old_locus;
+
+ if (last)
+ break;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ /* Restore the previous state of the interface. */
+ interface = gfc_current_interface_head ();
+ gfc_set_current_interface_head (old_interface_head);
+
+ /* Free the new interfaces. */
+ while (interface != old_interface_head)
+ {
+ gfc_interface *i = interface->next;
+ free (interface);
+ interface = i;
+ }
+
+ /* And issue a syntax error. */
+ gfc_syntax_error (ST_MODULE_PROC);
+ return MATCH_ERROR;
+}
+
+
+/* Check a derived type that is being extended. */
+
+static gfc_symbol*
+check_extended_derived_type (char *name)
+{
+ gfc_symbol *extended;
+
+ if (gfc_find_symbol (name, gfc_current_ns, 1, &extended))
+ {
+ gfc_error ("Ambiguous symbol in TYPE definition at %C");
+ return NULL;
+ }
+
+ extended = gfc_find_dt_in_generic (extended);
+
+ /* F08:C428. */
+ if (!extended)
+ {
+ gfc_error ("Symbol %qs at %C has not been previously defined", name);
+ return NULL;
+ }
+
+ if (extended->attr.flavor != FL_DERIVED)
+ {
+ gfc_error ("%qs in EXTENDS expression at %C is not a "
+ "derived type", name);
+ return NULL;
+ }
+
+ if (extended->attr.is_bind_c)
+ {
+ gfc_error ("%qs cannot be extended at %C because it "
+ "is BIND(C)", extended->name);
+ return NULL;
+ }
+
+ if (extended->attr.sequence)
+ {
+ gfc_error ("%qs cannot be extended at %C because it "
+ "is a SEQUENCE type", extended->name);
+ return NULL;
+ }
+
+ return extended;
+}
+
+
+/* Match the optional attribute specifiers for a type declaration.
+ Return MATCH_ERROR if an error is encountered in one of the handled
+ attributes (public, private, bind(c)), MATCH_NO if what's found is
+ not a handled attribute, and MATCH_YES otherwise. TODO: More error
+ checking on attribute conflicts needs to be done. */
+
+static match
+gfc_get_type_attr_spec (symbol_attribute *attr, char *name)
+{
+ /* See if the derived type is marked as private. */
+ if (gfc_match (" , private") == MATCH_YES)
+ {
+ if (gfc_current_state () != COMP_MODULE)
+ {
+ gfc_error ("Derived type at %C can only be PRIVATE in the "
+ "specification part of a module");
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL))
+ return MATCH_ERROR;
+ }
+ else if (gfc_match (" , public") == MATCH_YES)
+ {
+ if (gfc_current_state () != COMP_MODULE)
+ {
+ gfc_error ("Derived type at %C can only be PUBLIC in the "
+ "specification part of a module");
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL))
+ return MATCH_ERROR;
+ }
+ else if (gfc_match (" , bind ( c )") == MATCH_YES)
+ {
+ /* If the type is defined to be bind(c) it then needs to make
+ sure that all fields are interoperable. This will
+ need to be a semantic check on the finished derived type.
+ See 15.2.3 (lines 9-12) of F2003 draft. */
+ if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0))
+ return MATCH_ERROR;
+
+ /* TODO: attr conflicts need to be checked, probably in symbol.c. */
+ }
+ else if (gfc_match (" , abstract") == MATCH_YES)
+ {
+ if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C"))
+ return MATCH_ERROR;
+
+ if (!gfc_add_abstract (attr, &gfc_current_locus))
+ return MATCH_ERROR;
+ }
+ else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES)
+ {
+ if (!gfc_add_extension (attr, &gfc_current_locus))
+ return MATCH_ERROR;
+ }
+ else
+ return MATCH_NO;
+
+ /* If we get here, something matched. */
+ return MATCH_YES;
+}
+
+
+/* Common function for type declaration blocks similar to derived types, such
+ as STRUCTURES and MAPs. Unlike derived types, a structure type
+ does NOT have a generic symbol matching the name given by the user.
+ STRUCTUREs can share names with variables and PARAMETERs so we must allow
+ for the creation of an independent symbol.
+ Other parameters are a message to prefix errors with, the name of the new
+ type to be created, and the flavor to add to the resulting symbol. */
+
+static bool
+get_struct_decl (const char *name, sym_flavor fl, locus *decl,
+ gfc_symbol **result)
+{
+ gfc_symbol *sym;
+ locus where;
+
+ gcc_assert (name[0] == (char) TOUPPER (name[0]));
+
+ if (decl)
+ where = *decl;
+ else
+ where = gfc_current_locus;
+
+ if (gfc_get_symbol (name, NULL, &sym))
+ return false;
+
+ if (!sym)
+ {
+ gfc_internal_error ("Failed to create structure type '%s' at %C", name);
+ return false;
+ }
+
+ if (sym->components != NULL || sym->attr.zero_comp)
+ {
+ gfc_error ("Type definition of %qs at %C was already defined at %L",
+ sym->name, &sym->declared_at);
+ return false;
+ }
+
+ sym->declared_at = where;
+
+ if (sym->attr.flavor != fl
+ && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL))
+ return false;
+
+ if (!sym->hash_value)
+ /* Set the hash for the compound name for this type. */
+ sym->hash_value = gfc_hash_value (sym);
+
+ /* Normally the type is expected to have been completely parsed by the time
+ a field declaration with this type is seen. For unions, maps, and nested
+ structure declarations, we need to indicate that it is okay that we
+ haven't seen any components yet. This will be updated after the structure
+ is fully parsed. */
+ sym->attr.zero_comp = 0;
+
+ /* Structures always act like derived-types with the SEQUENCE attribute */
+ gfc_add_sequence (&sym->attr, sym->name, NULL);
+
+ if (result) *result = sym;
+
+ return true;
+}
+
+
+/* Match the opening of a MAP block. Like a struct within a union in C;
+ behaves identical to STRUCTURE blocks. */
+
+match
+gfc_match_map (void)
+{
+ /* Counter used to give unique internal names to map structures. */
+ static unsigned int gfc_map_id = 0;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym;
+ locus old_loc;
+
+ old_loc = gfc_current_locus;
+
+ if (gfc_match_eos () != MATCH_YES)
+ {
+ gfc_error ("Junk after MAP statement at %C");
+ gfc_current_locus = old_loc;
+ return MATCH_ERROR;
+ }
+
+ /* Map blocks are anonymous so we make up unique names for the symbol table
+ which are invalid Fortran identifiers. */
+ snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++);
+
+ if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym))
+ return MATCH_ERROR;
+
+ gfc_new_block = sym;
+
+ return MATCH_YES;
+}
+
+
+/* Match the opening of a UNION block. */
+
+match
+gfc_match_union (void)
+{
+ /* Counter used to give unique internal names to union types. */
+ static unsigned int gfc_union_id = 0;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym;
+ locus old_loc;
+
+ old_loc = gfc_current_locus;
+
+ if (gfc_match_eos () != MATCH_YES)
+ {
+ gfc_error ("Junk after UNION statement at %C");
+ gfc_current_locus = old_loc;
+ return MATCH_ERROR;
+ }
+
+ /* Unions are anonymous so we make up unique names for the symbol table
+ which are invalid Fortran identifiers. */
+ snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++);
+
+ if (!get_struct_decl (name, FL_UNION, &old_loc, &sym))
+ return MATCH_ERROR;
+
+ gfc_new_block = sym;
+
+ return MATCH_YES;
+}
+
+
+/* Match the beginning of a STRUCTURE declaration. This is similar to
+ matching the beginning of a derived type declaration with a few
+ twists. The resulting type symbol has no access control or other
+ interesting attributes. */
+
+match
+gfc_match_structure_decl (void)
+{
+ /* Counter used to give unique internal names to anonymous structures. */
+ static unsigned int gfc_structure_id = 0;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol *sym;
+ match m;
+ locus where;
+
+ if (!flag_dec_structure)
+ {
+ gfc_error ("%s at %C is a DEC extension, enable with "
+ "%<-fdec-structure%>",
+ "STRUCTURE");
+ return MATCH_ERROR;
+ }
+
+ name[0] = '\0';
+
+ m = gfc_match (" /%n/", name);
+ if (m != MATCH_YES)
+ {
+ /* Non-nested structure declarations require a structure name. */
+ if (!gfc_comp_struct (gfc_current_state ()))
+ {
+ gfc_error ("Structure name expected in non-nested structure "
+ "declaration at %C");
+ return MATCH_ERROR;
+ }
+ /* This is an anonymous structure; make up a unique name for it
+ (upper-case letters never make it to symbol names from the source).
+ The important thing is initializing the type variable
+ and setting gfc_new_symbol, which is immediately used by
+ parse_structure () and variable_decl () to add components of
+ this type. */
+ snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++);
+ }
+
+ where = gfc_current_locus;
+ /* No field list allowed after non-nested structure declaration. */
+ if (!gfc_comp_struct (gfc_current_state ())
+ && gfc_match_eos () != MATCH_YES)
+ {
+ gfc_error ("Junk after non-nested STRUCTURE statement at %C");
+ return MATCH_ERROR;
+ }
+
+ /* Make sure the name is not the name of an intrinsic type. */
+ if (gfc_is_intrinsic_typename (name))
+ {
+ gfc_error ("Structure name %qs at %C cannot be the same as an"
+ " intrinsic type", name);
+ return MATCH_ERROR;
+ }
+
+ /* Store the actual type symbol for the structure with an upper-case first
+ letter (an invalid Fortran identifier). */
+
+ if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym))
+ return MATCH_ERROR;
+
+ gfc_new_block = sym;
+ return MATCH_YES;
+}
+
+
+/* This function does some work to determine which matcher should be used to
+ * match a statement beginning with "TYPE". This is used to disambiguate TYPE
+ * as an alias for PRINT from derived type declarations, TYPE IS statements,
+ * and [parameterized] derived type declarations. */
+
+match
+gfc_match_type (gfc_statement *st)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ match m;
+ locus old_loc;
+
+ /* Requires -fdec. */
+ if (!flag_dec)
+ return MATCH_NO;
+
+ m = gfc_match ("type");
+ if (m != MATCH_YES)
+ return m;
+ /* If we already have an error in the buffer, it is probably from failing to
+ * match a derived type data declaration. Let it happen. */
+ else if (gfc_error_flag_test ())
+ return MATCH_NO;
+
+ old_loc = gfc_current_locus;
+ *st = ST_NONE;
+
+ /* If we see an attribute list before anything else it's definitely a derived
+ * type declaration. */
+ if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES)
+ goto derived;
+
+ /* By now "TYPE" has already been matched. If we do not see a name, this may
+ * be something like "TYPE *" or "TYPE <fmt>". */
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ {
+ /* Let print match if it can, otherwise throw an error from
+ * gfc_match_derived_decl. */
+ gfc_current_locus = old_loc;
+ if (gfc_match_print () == MATCH_YES)
+ {
+ *st = ST_WRITE;
+ return MATCH_YES;
+ }
+ goto derived;
+ }
+
+ /* Check for EOS. */
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ /* By now we have "TYPE <name> <EOS>". Check first if the name is an
+ * intrinsic typename - if so let gfc_match_derived_decl dump an error.
+ * Otherwise if gfc_match_derived_decl fails it's probably an existing
+ * symbol which can be printed. */
+ gfc_current_locus = old_loc;
+ m = gfc_match_derived_decl ();
+ if (gfc_is_intrinsic_typename (name) || m == MATCH_YES)
+ {
+ *st = ST_DERIVED_DECL;
+ return m;
+ }
+ }
+ else
+ {
+ /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration
+ like <type name(parameter)>. */
+ gfc_gobble_whitespace ();
+ bool paren = gfc_peek_ascii_char () == '(';
+ if (paren)
+ {
+ if (strcmp ("is", name) == 0)
+ goto typeis;
+ else
+ goto derived;
+ }
+ }
+
+ /* Treat TYPE... like PRINT... */
+ gfc_current_locus = old_loc;
+ *st = ST_WRITE;
+ return gfc_match_print ();
+
+derived:
+ gfc_current_locus = old_loc;
+ *st = ST_DERIVED_DECL;
+ return gfc_match_derived_decl ();
+
+typeis:
+ gfc_current_locus = old_loc;
+ *st = ST_TYPE_IS;
+ return gfc_match_type_is ();
+}
+
+
+/* Match the beginning of a derived type declaration. If a type name
+ was the result of a function, then it is possible to have a symbol
+ already to be known as a derived type yet have no components. */
+
+match
+gfc_match_derived_decl (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ char parent[GFC_MAX_SYMBOL_LEN + 1];
+ symbol_attribute attr;
+ gfc_symbol *sym, *gensym;
+ gfc_symbol *extended;
+ match m;
+ match is_type_attr_spec = MATCH_NO;
+ bool seen_attr = false;
+ gfc_interface *intr = NULL, *head;
+ bool parameterized_type = false;
+ bool seen_colons = false;
+
+ if (gfc_comp_struct (gfc_current_state ()))
+ return MATCH_NO;
+
+ name[0] = '\0';
+ parent[0] = '\0';
+ gfc_clear_attr (&attr);
+ extended = NULL;
+
+ do
+ {
+ is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent);
+ if (is_type_attr_spec == MATCH_ERROR)
+ return MATCH_ERROR;
+ if (is_type_attr_spec == MATCH_YES)
+ seen_attr = true;
+ } while (is_type_attr_spec == MATCH_YES);
+
+ /* Deal with derived type extensions. The extension attribute has
+ been added to 'attr' but now the parent type must be found and
+ checked. */
+ if (parent[0])
+ extended = check_extended_derived_type (parent);
+
+ if (parent[0] && !extended)
+ return MATCH_ERROR;
+
+ m = gfc_match (" ::");
+ if (m == MATCH_YES)
+ {
+ seen_colons = true;
+ }
+ else if (seen_attr)
+ {
+ gfc_error ("Expected :: in TYPE definition at %C");
+ return MATCH_ERROR;
+ }
+
+ /* In free source form, need to check for TYPE XXX as oppose to TYPEXXX.
+ But, we need to simply return for TYPE(. */
+ if (m == MATCH_NO && gfc_current_form == FORM_FREE)
+ {
+ char c = gfc_peek_ascii_char ();
+ if (c == '(')
+ return m;
+ if (!gfc_is_whitespace (c))
+ {
+ gfc_error ("Mangled derived type definition at %C");
+ return MATCH_NO;
+ }
+ }
+
+ m = gfc_match (" %n ", name);
+ if (m != MATCH_YES)
+ return m;
+
+ /* Make sure that we don't identify TYPE IS (...) as a parameterized
+ derived type named 'is'.
+ TODO Expand the check, when 'name' = "is" by matching " (tname) "
+ and checking if this is a(n intrinsic) typename. This picks up
+ misplaced TYPE IS statements such as in select_type_1.f03. */
+ if (gfc_peek_ascii_char () == '(')
+ {
+ if (gfc_current_state () == COMP_SELECT_TYPE
+ || (!seen_colons && !strcmp (name, "is")))
+ return MATCH_NO;
+ parameterized_type = true;
+ }
+
+ m = gfc_match_eos ();
+ if (m != MATCH_YES && !parameterized_type)
+ return m;
+
+ /* Make sure the name is not the name of an intrinsic type. */
+ if (gfc_is_intrinsic_typename (name))
+ {
+ gfc_error ("Type name %qs at %C cannot be the same as an intrinsic "
+ "type", name);
+ return MATCH_ERROR;
+ }
+
+ if (gfc_get_symbol (name, NULL, &gensym))
+ return MATCH_ERROR;
+
+ if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN)
+ {
+ if (gensym->ts.u.derived)
+ gfc_error ("Derived type name %qs at %C already has a basic type "
+ "of %s", gensym->name, gfc_typename (&gensym->ts));
+ else
+ gfc_error ("Derived type name %qs at %C already has a basic type",
+ gensym->name);
+ return MATCH_ERROR;
+ }
+
+ if (!gensym->attr.generic
+ && !gfc_add_generic (&gensym->attr, gensym->name, NULL))
+ return MATCH_ERROR;
+
+ if (!gensym->attr.function
+ && !gfc_add_function (&gensym->attr, gensym->name, NULL))
+ return MATCH_ERROR;
+
+ if (gensym->attr.dummy)
+ {
+ gfc_error ("Dummy argument %qs at %L cannot be a derived type at %C",
+ name, &gensym->declared_at);
+ return MATCH_ERROR;
+ }
+
+ sym = gfc_find_dt_in_generic (gensym);
+
+ if (sym && (sym->components != NULL || sym->attr.zero_comp))
+ {
+ gfc_error ("Derived type definition of %qs at %C has already been "
+ "defined", sym->name);
+ return MATCH_ERROR;
+ }
+
+ if (!sym)
+ {
+ /* Use upper case to save the actual derived-type symbol. */
+ gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym);
+ sym->name = gfc_get_string ("%s", gensym->name);
+ head = gensym->generic;
+ intr = gfc_get_interface ();
+ intr->sym = sym;
+ intr->where = gfc_current_locus;
+ intr->sym->declared_at = gfc_current_locus;
+ intr->next = head;
+ gensym->generic = intr;
+ gensym->attr.if_source = IFSRC_DECL;
+ }
+
+ /* The symbol may already have the derived attribute without the
+ components. The ways this can happen is via a function
+ definition, an INTRINSIC statement or a subtype in another
+ derived type that is a pointer. The first part of the AND clause
+ is true if the symbol is not the return value of a function. */
+ if (sym->attr.flavor != FL_DERIVED
+ && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL))
+ return MATCH_ERROR;
+
+ if (attr.access != ACCESS_UNKNOWN
+ && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL))
+ return MATCH_ERROR;
+ else if (sym->attr.access == ACCESS_UNKNOWN
+ && gensym->attr.access != ACCESS_UNKNOWN
+ && !gfc_add_access (&sym->attr, gensym->attr.access,
+ sym->name, NULL))
+ return MATCH_ERROR;
+
+ if (sym->attr.access != ACCESS_UNKNOWN
+ && gensym->attr.access == ACCESS_UNKNOWN)
+ gensym->attr.access = sym->attr.access;
+
+ /* See if the derived type was labeled as bind(c). */
+ if (attr.is_bind_c != 0)
+ sym->attr.is_bind_c = attr.is_bind_c;
+
+ /* Construct the f2k_derived namespace if it is not yet there. */
+ if (!sym->f2k_derived)
+ sym->f2k_derived = gfc_get_namespace (NULL, 0);
+
+ if (parameterized_type)
+ {
+ /* Ignore error or mismatches by going to the end of the statement
+ in order to avoid the component declarations causing problems. */
+ m = gfc_match_formal_arglist (sym, 0, 0, true);
+ if (m != MATCH_YES)
+ gfc_error_recovery ();
+ else
+ sym->attr.pdt_template = 1;
+ m = gfc_match_eos ();
+ if (m != MATCH_YES)
+ {
+ gfc_error_recovery ();
+ gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C");
+ }
+ }
+
+ if (extended && !sym->components)
+ {
+ gfc_component *p;
+ gfc_formal_arglist *f, *g, *h;
+
+ /* Add the extended derived type as the first component. */
+ gfc_add_component (sym, parent, &p);
+ extended->refs++;
+ gfc_set_sym_referenced (extended);
+
+ p->ts.type = BT_DERIVED;
+ p->ts.u.derived = extended;
+ p->initializer = gfc_default_initializer (&p->ts);
+
+ /* Set extension level. */
+ if (extended->attr.extension == 255)
+ {
+ /* Since the extension field is 8 bit wide, we can only have
+ up to 255 extension levels. */
+ gfc_error ("Maximum extension level reached with type %qs at %L",
+ extended->name, &extended->declared_at);
+ return MATCH_ERROR;
+ }
+ sym->attr.extension = extended->attr.extension + 1;
+
+ /* Provide the links between the extended type and its extension. */
+ if (!extended->f2k_derived)
+ extended->f2k_derived = gfc_get_namespace (NULL, 0);
+
+ /* Copy the extended type-param-name-list from the extended type,
+ append those of the extension and add the whole lot to the
+ extension. */
+ if (extended->attr.pdt_template)
+ {
+ g = h = NULL;
+ sym->attr.pdt_template = 1;
+ for (f = extended->formal; f; f = f->next)
+ {
+ if (f == extended->formal)
+ {
+ g = gfc_get_formal_arglist ();
+ h = g;
+ }
+ else
+ {
+ g->next = gfc_get_formal_arglist ();
+ g = g->next;
+ }
+ g->sym = f->sym;
+ }
+ g->next = sym->formal;
+ sym->formal = h;
+ }
+ }
+
+ if (!sym->hash_value)
+ /* Set the hash for the compound name for this type. */
+ sym->hash_value = gfc_hash_value (sym);
+
+ /* Take over the ABSTRACT attribute. */
+ sym->attr.abstract = attr.abstract;
+
+ gfc_new_block = sym;
+
+ return MATCH_YES;
+}
+
+
+/* Cray Pointees can be declared as:
+ pointer (ipt, a (n,m,...,*)) */
+
+match
+gfc_mod_pointee_as (gfc_array_spec *as)
+{
+ as->cray_pointee = true; /* This will be useful to know later. */
+ if (as->type == AS_ASSUMED_SIZE)
+ as->cp_was_assumed = true;
+ else if (as->type == AS_ASSUMED_SHAPE)
+ {
+ gfc_error ("Cray Pointee at %C cannot be assumed shape array");
+ return MATCH_ERROR;
+ }
+ return MATCH_YES;
+}
+
+
+/* Match the enum definition statement, here we are trying to match
+ the first line of enum definition statement.
+ Returns MATCH_YES if match is found. */
+
+match
+gfc_match_enum (void)
+{
+ match m;
+
+ m = gfc_match_eos ();
+ if (m != MATCH_YES)
+ return m;
+
+ if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C"))
+ return MATCH_ERROR;
+
+ return MATCH_YES;
+}
+
+
+/* Returns an initializer whose value is one higher than the value of the
+ LAST_INITIALIZER argument. If the argument is NULL, the
+ initializers value will be set to zero. The initializer's kind
+ will be set to gfc_c_int_kind.
+
+ If -fshort-enums is given, the appropriate kind will be selected
+ later after all enumerators have been parsed. A warning is issued
+ here if an initializer exceeds gfc_c_int_kind. */
+
+static gfc_expr *
+enum_initializer (gfc_expr *last_initializer, locus where)
+{
+ gfc_expr *result;
+ result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where);
+
+ mpz_init (result->value.integer);
+
+ if (last_initializer != NULL)
+ {
+ mpz_add_ui (result->value.integer, last_initializer->value.integer, 1);
+ result->where = last_initializer->where;
+
+ if (gfc_check_integer_range (result->value.integer,
+ gfc_c_int_kind) != ARITH_OK)
+ {
+ gfc_error ("Enumerator exceeds the C integer type at %C");
+ return NULL;
+ }
+ }
+ else
+ {
+ /* Control comes here, if it's the very first enumerator and no
+ initializer has been given. It will be initialized to zero. */
+ mpz_set_si (result->value.integer, 0);
+ }
+
+ return result;
+}
+
+
+/* Match a variable name with an optional initializer. When this
+ subroutine is called, a variable is expected to be parsed next.
+ Depending on what is happening at the moment, updates either the
+ symbol table or the current interface. */
+
+static match
+enumerator_decl (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_expr *initializer;
+ gfc_array_spec *as = NULL;
+ gfc_symbol *sym;
+ locus var_locus;
+ match m;
+ bool t;
+ locus old_locus;
+
+ initializer = NULL;
+ old_locus = gfc_current_locus;
+
+ /* When we get here, we've just matched a list of attributes and
+ maybe a type and a double colon. The next thing we expect to see
+ is the name of the symbol. */
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ goto cleanup;
+
+ var_locus = gfc_current_locus;
+
+ /* OK, we've successfully matched the declaration. Now put the
+ symbol in the current namespace. If we fail to create the symbol,
+ bail out. */
+ if (!build_sym (name, NULL, false, &as, &var_locus))
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* The double colon must be present in order to have initializers.
+ Otherwise the statement is ambiguous with an assignment statement. */
+ if (colon_seen)
+ {
+ if (gfc_match_char ('=') == MATCH_YES)
+ {
+ m = gfc_match_init_expr (&initializer);
+ if (m == MATCH_NO)
+ {
+ gfc_error ("Expected an initialization expression at %C");
+ m = MATCH_ERROR;
+ }
+
+ if (m != MATCH_YES)
+ goto cleanup;
+ }
+ }
+
+ /* If we do not have an initializer, the initialization value of the
+ previous enumerator (stored in last_initializer) is incremented
+ by 1 and is used to initialize the current enumerator. */
+ if (initializer == NULL)
+ initializer = enum_initializer (last_initializer, old_locus);
+
+ if (initializer == NULL || initializer->ts.type != BT_INTEGER)
+ {
+ gfc_error ("ENUMERATOR %L not initialized with integer expression",
+ &var_locus);
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ /* Store this current initializer, for the next enumerator variable
+ to be parsed. add_init_expr_to_sym() zeros initializer, so we
+ use last_initializer below. */
+ last_initializer = initializer;
+ t = add_init_expr_to_sym (name, &initializer, &var_locus);
+
+ /* Maintain enumerator history. */
+ gfc_find_symbol (name, NULL, 0, &sym);
+ create_enum_history (sym, last_initializer);
+
+ return (t) ? MATCH_YES : MATCH_ERROR;
+
+cleanup:
+ /* Free stuff up and return. */
+ gfc_free_expr (initializer);
+
+ return m;
+}
+
+
+/* Match the enumerator definition statement. */
+
+match
+gfc_match_enumerator_def (void)
+{
+ match m;
+ bool t;
+
+ gfc_clear_ts (&current_ts);
+
+ m = gfc_match (" enumerator");
+ if (m != MATCH_YES)
+ return m;
+
+ m = gfc_match (" :: ");
+ if (m == MATCH_ERROR)
+ return m;
+
+ colon_seen = (m == MATCH_YES);
+
+ if (gfc_current_state () != COMP_ENUM)
+ {
+ gfc_error ("ENUM definition statement expected before %C");
+ gfc_free_enum_history ();
+ return MATCH_ERROR;
+ }
+
+ (&current_ts)->type = BT_INTEGER;
+ (&current_ts)->kind = gfc_c_int_kind;
+
+ gfc_clear_attr (&current_attr);
+ t = gfc_add_flavor (&current_attr, FL_PARAMETER, NULL, NULL);
+ if (!t)
+ {
+ m = MATCH_ERROR;
+ goto cleanup;
+ }
+
+ for (;;)
+ {
+ m = enumerator_decl ();
+ if (m == MATCH_ERROR)
+ {
+ gfc_free_enum_history ();
+ goto cleanup;
+ }
+ if (m == MATCH_NO)
+ break;
+
+ if (gfc_match_eos () == MATCH_YES)
+ goto cleanup;
+ if (gfc_match_char (',') != MATCH_YES)
+ break;
+ }
+
+ if (gfc_current_state () == COMP_ENUM)
+ {
+ gfc_free_enum_history ();
+ gfc_error ("Syntax error in ENUMERATOR definition at %C");
+ m = MATCH_ERROR;
+ }
+
+cleanup:
+ gfc_free_array_spec (current_as);
+ current_as = NULL;
+ return m;
+
+}
+
+
+/* Match binding attributes. */
+
+static match
+match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc)
+{
+ bool found_passing = false;
+ bool seen_ptr = false;
+ match m = MATCH_YES;
+
+ /* Initialize to defaults. Do so even before the MATCH_NO check so that in
+ this case the defaults are in there. */
+ ba->access = ACCESS_UNKNOWN;
+ ba->pass_arg = NULL;
+ ba->pass_arg_num = 0;
+ ba->nopass = 0;
+ ba->non_overridable = 0;
+ ba->deferred = 0;
+ ba->ppc = ppc;
+
+ /* If we find a comma, we believe there are binding attributes. */
+ m = gfc_match_char (',');
+ if (m == MATCH_NO)
+ goto done;
+
+ do
+ {
+ /* Access specifier. */
+
+ m = gfc_match (" public");
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES)
+ {
+ if (ba->access != ACCESS_UNKNOWN)
+ {
+ gfc_error ("Duplicate access-specifier at %C");
+ goto error;
+ }
+
+ ba->access = ACCESS_PUBLIC;
+ continue;
+ }
+
+ m = gfc_match (" private");
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES)
+ {
+ if (ba->access != ACCESS_UNKNOWN)
+ {
+ gfc_error ("Duplicate access-specifier at %C");
+ goto error;
+ }
+
+ ba->access = ACCESS_PRIVATE;
+ continue;
+ }
+
+ /* If inside GENERIC, the following is not allowed. */
+ if (!generic)
+ {
+
+ /* NOPASS flag. */
+ m = gfc_match (" nopass");
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES)
+ {
+ if (found_passing)
+ {
+ gfc_error ("Binding attributes already specify passing,"
+ " illegal NOPASS at %C");
+ goto error;
+ }
+
+ found_passing = true;
+ ba->nopass = 1;
+ continue;
+ }
+
+ /* PASS possibly including argument. */
+ m = gfc_match (" pass");
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES)
+ {
+ char arg[GFC_MAX_SYMBOL_LEN + 1];
+
+ if (found_passing)
+ {
+ gfc_error ("Binding attributes already specify passing,"
+ " illegal PASS at %C");
+ goto error;
+ }
+
+ m = gfc_match (" ( %n )", arg);
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES)
+ ba->pass_arg = gfc_get_string ("%s", arg);
+ gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL));
+
+ found_passing = true;
+ ba->nopass = 0;
+ continue;
+ }
+
+ if (ppc)
+ {
+ /* POINTER flag. */
+ m = gfc_match (" pointer");
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES)
+ {
+ if (seen_ptr)
+ {
+ gfc_error ("Duplicate POINTER attribute at %C");
+ goto error;
+ }
+
+ seen_ptr = true;
+ continue;
+ }
+ }
+ else
+ {
+ /* NON_OVERRIDABLE flag. */
+ m = gfc_match (" non_overridable");
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES)
+ {
+ if (ba->non_overridable)
+ {
+ gfc_error ("Duplicate NON_OVERRIDABLE at %C");
+ goto error;
+ }
+
+ ba->non_overridable = 1;
+ continue;
+ }
+
+ /* DEFERRED flag. */
+ m = gfc_match (" deferred");
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_YES)
+ {
+ if (ba->deferred)
+ {
+ gfc_error ("Duplicate DEFERRED at %C");
+ goto error;
+ }
+
+ ba->deferred = 1;
+ continue;
+ }
+ }
+
+ }
+
+ /* Nothing matching found. */
+ if (generic)
+ gfc_error ("Expected access-specifier at %C");
+ else
+ gfc_error ("Expected binding attribute at %C");
+ goto error;
+ }
+ while (gfc_match_char (',') == MATCH_YES);
+
+ /* NON_OVERRIDABLE and DEFERRED exclude themselves. */
+ if (ba->non_overridable && ba->deferred)
+ {
+ gfc_error ("NON_OVERRIDABLE and DEFERRED cannot both appear at %C");
+ goto error;
+ }
+
+ m = MATCH_YES;
+
+done:
+ if (ba->access == ACCESS_UNKNOWN)
+ ba->access = ppc ? gfc_current_block()->component_access
+ : gfc_typebound_default_access;
+
+ if (ppc && !seen_ptr)
+ {
+ gfc_error ("POINTER attribute is required for procedure pointer component"
+ " at %C");
+ goto error;
+ }
+
+ return m;
+
+error:
+ return MATCH_ERROR;
+}
+
+
+/* Match a PROCEDURE specific binding inside a derived type. */
+
+static match
+match_procedure_in_type (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ char target_buf[GFC_MAX_SYMBOL_LEN + 1];
+ char* target = NULL, *ifc = NULL;
+ gfc_typebound_proc tb;
+ bool seen_colons;
+ bool seen_attrs;
+ match m;
+ gfc_symtree* stree;
+ gfc_namespace* ns;
+ gfc_symbol* block;
+ int num;
+
+ /* Check current state. */
+ gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS);
+ block = gfc_state_stack->previous->sym;
+ gcc_assert (block);
+
+ /* Try to match PROCEDURE(interface). */
+ if (gfc_match (" (") == MATCH_YES)
+ {
+ m = gfc_match_name (target_buf);
+ if (m == MATCH_ERROR)
+ return m;
+ if (m != MATCH_YES)
+ {
+ gfc_error ("Interface-name expected after %<(%> at %C");
+ return MATCH_ERROR;
+ }
+
+ if (gfc_match (" )") != MATCH_YES)
+ {
+ gfc_error ("%<)%> expected at %C");
+ return MATCH_ERROR;
+ }
+
+ ifc = target_buf;
+ }
+
+ /* Construct the data structure. */
+ memset (&tb, 0, sizeof (tb));
+ tb.where = gfc_current_locus;
+
+ /* Match binding attributes. */
+ m = match_binding_attributes (&tb, false, false);
+ if (m == MATCH_ERROR)
+ return m;
+ seen_attrs = (m == MATCH_YES);
+
+ /* Check that attribute DEFERRED is given if an interface is specified. */
+ if (tb.deferred && !ifc)
+ {
+ gfc_error ("Interface must be specified for DEFERRED binding at %C");
+ return MATCH_ERROR;
+ }
+ if (ifc && !tb.deferred)
+ {
+ gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED");
+ return MATCH_ERROR;
+ }
+
+ /* Match the colons. */
+ m = gfc_match (" ::");
+ if (m == MATCH_ERROR)
+ return m;
+ seen_colons = (m == MATCH_YES);
+ if (seen_attrs && !seen_colons)
+ {
+ gfc_error ("Expected %<::%> after binding-attributes at %C");
+ return MATCH_ERROR;
+ }
+
+ /* Match the binding names. */
+ for(num=1;;num++)
+ {
+ m = gfc_match_name (name);
+ if (m == MATCH_ERROR)
+ return m;
+ if (m == MATCH_NO)
+ {
+ gfc_error ("Expected binding name at %C");
+ return MATCH_ERROR;
+ }
+
+ if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C"))
+ return MATCH_ERROR;
+
+ /* Try to match the '=> target', if it's there. */
+ target = ifc;
+ m = gfc_match (" =>");
+ if (m == MATCH_ERROR)
+ return m;
+ if (m == MATCH_YES)
+ {
+ if (tb.deferred)
+ {
+ gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C");
+ return MATCH_ERROR;
+ }
+
+ if (!seen_colons)
+ {
+ gfc_error ("%<::%> needed in PROCEDURE binding with explicit target"
+ " at %C");
+ return MATCH_ERROR;
+ }
+
+ m = gfc_match_name (target_buf);
+ if (m == MATCH_ERROR)
+ return m;
+ if (m == MATCH_NO)
+ {
+ gfc_error ("Expected binding target after %<=>%> at %C");
+ return MATCH_ERROR;
+ }
+ target = target_buf;
+ }
+
+ /* If no target was found, it has the same name as the binding. */
+ if (!target)
+ target = name;
+
+ /* Get the namespace to insert the symbols into. */
+ ns = block->f2k_derived;
+ gcc_assert (ns);
+
+ /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */
+ if (tb.deferred && !block->attr.abstract)
+ {
+ gfc_error ("Type %qs containing DEFERRED binding at %C "
+ "is not ABSTRACT", block->name);
+ return MATCH_ERROR;
+ }
+
+ /* See if we already have a binding with this name in the symtree which
+ would be an error. If a GENERIC already targeted this binding, it may
+ be already there but then typebound is still NULL. */
+ stree = gfc_find_symtree (ns->tb_sym_root, name);
+ if (stree && stree->n.tb)
+ {
+ gfc_error ("There is already a procedure with binding name %qs for "
+ "the derived type %qs at %C", name, block->name);
+ return MATCH_ERROR;
+ }
+
+ /* Insert it and set attributes. */
+
+ if (!stree)
+ {
+ stree = gfc_new_symtree (&ns->tb_sym_root, name);
+ gcc_assert (stree);
+ }
+ stree->n.tb = gfc_get_typebound_proc (&tb);
+
+ if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific,
+ false))
+ return MATCH_ERROR;
+ gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym);
+ gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE,
+ target, &stree->n.tb->u.specific->n.sym->declared_at);
+
+ if (gfc_match_eos () == MATCH_YES)
+ return MATCH_YES;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+syntax:
+ gfc_error ("Syntax error in PROCEDURE statement at %C");
+ return MATCH_ERROR;
+}
+
+
+/* Match a GENERIC procedure binding inside a derived type. */
+
+match
+gfc_match_generic (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */
+ gfc_symbol* block;
+ gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */
+ gfc_typebound_proc* tb;
+ gfc_namespace* ns;
+ interface_type op_type;
+ gfc_intrinsic_op op;
+ match m;
+
+ /* Check current state. */
+ if (gfc_current_state () == COMP_DERIVED)
+ {
+ gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS");
+ return MATCH_ERROR;
+ }
+ if (gfc_current_state () != COMP_DERIVED_CONTAINS)
+ return MATCH_NO;
+ block = gfc_state_stack->previous->sym;
+ ns = block->f2k_derived;
+ gcc_assert (block && ns);
+
+ memset (&tbattr, 0, sizeof (tbattr));
+ tbattr.where = gfc_current_locus;
+
+ /* See if we get an access-specifier. */
+ m = match_binding_attributes (&tbattr, true, false);
+ if (m == MATCH_ERROR)
+ goto error;
+
+ /* Now the colons, those are required. */
+ if (gfc_match (" ::") != MATCH_YES)
+ {
+ gfc_error ("Expected %<::%> at %C");
+ goto error;
+ }
+
+ /* Match the binding name; depending on type (operator / generic) format
+ it for future error messages into bind_name. */
+
+ m = gfc_match_generic_spec (&op_type, name, &op);
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ if (m == MATCH_NO)
+ {
+ gfc_error ("Expected generic name or operator descriptor at %C");
+ goto error;
+ }
+
+ switch (op_type)
+ {
+ case INTERFACE_GENERIC:
+ case INTERFACE_DTIO:
+ snprintf (bind_name, sizeof (bind_name), "%s", name);
+ break;
+
+ case INTERFACE_USER_OP:
+ snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name);
+ break;
+
+ case INTERFACE_INTRINSIC_OP:
+ snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)",
+ gfc_op2string (op));
+ break;
+
+ case INTERFACE_NAMELESS:
+ gfc_error ("Malformed GENERIC statement at %C");
+ goto error;
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+
+ /* Match the required =>. */
+ if (gfc_match (" =>") != MATCH_YES)
+ {
+ gfc_error ("Expected %<=>%> at %C");
+ goto error;
+ }
+
+ /* Try to find existing GENERIC binding with this name / for this operator;
+ if there is something, check that it is another GENERIC and then extend
+ it rather than building a new node. Otherwise, create it and put it
+ at the right position. */
+
+ switch (op_type)
+ {
+ case INTERFACE_DTIO:
+ case INTERFACE_USER_OP:
+ case INTERFACE_GENERIC:
+ {
+ const bool is_op = (op_type == INTERFACE_USER_OP);
+ gfc_symtree* st;
+
+ st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name);
+ tb = st ? st->n.tb : NULL;
+ break;
+ }
+
+ case INTERFACE_INTRINSIC_OP:
+ tb = ns->tb_op[op];
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+
+ if (tb)
+ {
+ if (!tb->is_generic)
+ {
+ gcc_assert (op_type == INTERFACE_GENERIC);
+ gfc_error ("There's already a non-generic procedure with binding name"
+ " %qs for the derived type %qs at %C",
+ bind_name, block->name);
+ goto error;
+ }
+
+ if (tb->access != tbattr.access)
+ {
+ gfc_error ("Binding at %C must have the same access as already"
+ " defined binding %qs", bind_name);
+ goto error;
+ }
+ }
+ else
+ {
+ tb = gfc_get_typebound_proc (NULL);
+ tb->where = gfc_current_locus;
+ tb->access = tbattr.access;
+ tb->is_generic = 1;
+ tb->u.generic = NULL;
+
+ switch (op_type)
+ {
+ case INTERFACE_DTIO:
+ case INTERFACE_GENERIC:
+ case INTERFACE_USER_OP:
+ {
+ const bool is_op = (op_type == INTERFACE_USER_OP);
+ gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root :
+ &ns->tb_sym_root, name);
+ gcc_assert (st);
+ st->n.tb = tb;
+
+ break;
+ }
+
+ case INTERFACE_INTRINSIC_OP:
+ ns->tb_op[op] = tb;
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+ }
+
+ /* Now, match all following names as specific targets. */
+ do
+ {
+ gfc_symtree* target_st;
+ gfc_tbp_generic* target;
+
+ m = gfc_match_name (name);
+ if (m == MATCH_ERROR)
+ goto error;
+ if (m == MATCH_NO)
+ {
+ gfc_error ("Expected specific binding name at %C");
+ goto error;
+ }
+
+ target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name);
+
+ /* See if this is a duplicate specification. */
+ for (target = tb->u.generic; target; target = target->next)
+ if (target_st == target->specific_st)
+ {
+ gfc_error ("%qs already defined as specific binding for the"
+ " generic %qs at %C", name, bind_name);
+ goto error;
+ }
+
+ target = gfc_get_tbp_generic ();
+ target->specific_st = target_st;
+ target->specific = NULL;
+ target->next = tb->u.generic;
+ target->is_operator = ((op_type == INTERFACE_USER_OP)
+ || (op_type == INTERFACE_INTRINSIC_OP));
+ tb->u.generic = target;
+ }
+ while (gfc_match (" ,") == MATCH_YES);
+
+ /* Here should be the end. */
+ if (gfc_match_eos () != MATCH_YES)
+ {
+ gfc_error ("Junk after GENERIC binding at %C");
+ goto error;
+ }
+
+ return MATCH_YES;
+
+error:
+ return MATCH_ERROR;
+}
+
+
+/* Match a FINAL declaration inside a derived type. */
+
+match
+gfc_match_final_decl (void)
+{
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ gfc_symbol* sym;
+ match m;
+ gfc_namespace* module_ns;
+ bool first, last;
+ gfc_symbol* block;
+
+ if (gfc_current_form == FORM_FREE)
+ {
+ char c = gfc_peek_ascii_char ();
+ if (!gfc_is_whitespace (c) && c != ':')
+ return MATCH_NO;
+ }
+
+ if (gfc_state_stack->state != COMP_DERIVED_CONTAINS)
+ {
+ if (gfc_current_form == FORM_FIXED)
+ return MATCH_NO;
+
+ gfc_error ("FINAL declaration at %C must be inside a derived type "
+ "CONTAINS section");
+ return MATCH_ERROR;
+ }
+
+ block = gfc_state_stack->previous->sym;
+ gcc_assert (block);
+
+ if (!gfc_state_stack->previous || !gfc_state_stack->previous->previous
+ || gfc_state_stack->previous->previous->state != COMP_MODULE)
+ {
+ gfc_error ("Derived type declaration with FINAL at %C must be in the"
+ " specification part of a MODULE");
+ return MATCH_ERROR;
+ }
+
+ module_ns = gfc_current_ns;
+ gcc_assert (module_ns);
+ gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE);
+
+ /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */
+ if (gfc_match (" ::") == MATCH_ERROR)
+ return MATCH_ERROR;
+
+ /* Match the sequence of procedure names. */
+ first = true;
+ last = false;
+ do
+ {
+ gfc_finalizer* f;
+
+ if (first && gfc_match_eos () == MATCH_YES)
+ {
+ gfc_error ("Empty FINAL at %C");
+ return MATCH_ERROR;
+ }
+
+ m = gfc_match_name (name);
+ if (m == MATCH_NO)
+ {
+ gfc_error ("Expected module procedure name at %C");
+ return MATCH_ERROR;
+ }
+ else if (m != MATCH_YES)
+ return MATCH_ERROR;
+
+ if (gfc_match_eos () == MATCH_YES)
+ last = true;
+ if (!last && gfc_match_char (',') != MATCH_YES)
+ {
+ gfc_error ("Expected %<,%> at %C");
+ return MATCH_ERROR;
+ }
+
+ if (gfc_get_symbol (name, module_ns, &sym))
+ {
+ gfc_error ("Unknown procedure name %qs at %C", name);
+ return MATCH_ERROR;
+ }
+
+ /* Mark the symbol as module procedure. */
+ if (sym->attr.proc != PROC_MODULE
+ && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL))
+ return MATCH_ERROR;
+
+ /* Check if we already have this symbol in the list, this is an error. */
+ for (f = block->f2k_derived->finalizers; f; f = f->next)
+ if (f->proc_sym == sym)
+ {
+ gfc_error ("%qs at %C is already defined as FINAL procedure",
+ name);
+ return MATCH_ERROR;
+ }
+
+ /* Add this symbol to the list of finalizers. */
+ gcc_assert (block->f2k_derived);
+ sym->refs++;
+ f = XCNEW (gfc_finalizer);
+ f->proc_sym = sym;
+ f->proc_tree = NULL;
+ f->where = gfc_current_locus;
+ f->next = block->f2k_derived->finalizers;
+ block->f2k_derived->finalizers = f;
+
+ first = false;
+ }
+ while (!last);
+
+ return MATCH_YES;
+}
+
+
+const ext_attr_t ext_attr_list[] = {
+ { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" },
+ { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" },
+ { "cdecl", EXT_ATTR_CDECL, "cdecl" },
+ { "stdcall", EXT_ATTR_STDCALL, "stdcall" },
+ { "fastcall", EXT_ATTR_FASTCALL, "fastcall" },
+ { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL },
+ { "deprecated", EXT_ATTR_DEPRECATED, NULL },
+ { NULL, EXT_ATTR_LAST, NULL }
+};
+
+/* Match a !GCC$ ATTRIBUTES statement of the form:
+ !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ...
+ When we come here, we have already matched the !GCC$ ATTRIBUTES string.
+
+ TODO: We should support all GCC attributes using the same syntax for
+ the attribute list, i.e. the list in C
+ __attributes(( attribute-list ))
+ matches then
+ !GCC$ ATTRIBUTES attribute-list ::
+ Cf. c-parser.c's c_parser_attributes; the data can then directly be
+ saved into a TREE.
+
+ As there is absolutely no risk of confusion, we should never return
+ MATCH_NO. */
+match
+gfc_match_gcc_attributes (void)
+{
+ symbol_attribute attr;
+ char name[GFC_MAX_SYMBOL_LEN + 1];
+ unsigned id;
+ gfc_symbol *sym;
+ match m;
+
+ gfc_clear_attr (&attr);
+ for(;;)
+ {
+ char ch;
+
+ if (gfc_match_name (name) != MATCH_YES)
+ return MATCH_ERROR;
+
+ for (id = 0; id < EXT_ATTR_LAST; id++)
+ if (strcmp (name, ext_attr_list[id].name) == 0)
+ break;
+
+ if (id == EXT_ATTR_LAST)
+ {
+ gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C");
+ return MATCH_ERROR;
+ }
+
+ if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus))
+ return MATCH_ERROR;
+
+ gfc_gobble_whitespace ();
+ ch = gfc_next_ascii_char ();
+ if (ch == ':')
+ {
+ /* This is the successful exit condition for the loop. */
+ if (gfc_next_ascii_char () == ':')
+ break;
+ }
+
+ if (ch == ',')
+ continue;
+
+ goto syntax;
+ }
+
+ if (gfc_match_eos () == MATCH_YES)
+ goto syntax;
+
+ for(;;)
+ {
+ m = gfc_match_name (name);
+ if (m != MATCH_YES)
+ return m;
+
+ if (find_special (name, &sym, true))
+ return MATCH_ERROR;
+
+ sym->attr.ext_attr |= attr.ext_attr;
+
+ if (gfc_match_eos () == MATCH_YES)
+ break;
+
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+ }
+
+ return MATCH_YES;
+
+syntax:
+ gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C");
+ return MATCH_ERROR;
+}
+
+
+/* Match a !GCC$ UNROLL statement of the form:
+ !GCC$ UNROLL n
+
+ The parameter n is the number of times we are supposed to unroll.
+
+ When we come here, we have already matched the !GCC$ UNROLL string. */
+match
+gfc_match_gcc_unroll (void)
+{
+ int value;
+
+ /* FIXME: use gfc_match_small_literal_int instead, delete small_int */
+ if (gfc_match_small_int (&value) == MATCH_YES)
+ {
+ if (value < 0 || value > USHRT_MAX)
+ {
+ gfc_error ("%<GCC unroll%> directive requires a"
+ " non-negative integral constant"
+ " less than or equal to %u at %C",
+ USHRT_MAX
+ );
+ return MATCH_ERROR;
+ }
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ directive_unroll = value == 0 ? 1 : value;
+ return MATCH_YES;
+ }
+ }
+
+ gfc_error ("Syntax error in !GCC$ UNROLL directive at %C");
+ return MATCH_ERROR;
+}
+
+/* Match a !GCC$ builtin (b) attributes simd flags if('target') form:
+
+ The parameter b is name of a middle-end built-in.
+ FLAGS is optional and must be one of:
+ - (inbranch)
+ - (notinbranch)
+
+ IF('target') is optional and TARGET is a name of a multilib ABI.
+
+ When we come here, we have already matched the !GCC$ builtin string. */
+
+match
+gfc_match_gcc_builtin (void)
+{
+ char builtin[GFC_MAX_SYMBOL_LEN + 1];
+ char target[GFC_MAX_SYMBOL_LEN + 1];
+
+ if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES)
+ return MATCH_ERROR;
+
+ gfc_simd_clause clause = SIMD_NONE;
+ if (gfc_match (" ( notinbranch ) ") == MATCH_YES)
+ clause = SIMD_NOTINBRANCH;
+ else if (gfc_match (" ( inbranch ) ") == MATCH_YES)
+ clause = SIMD_INBRANCH;
+
+ if (gfc_match (" if ( '%n' ) ", target) == MATCH_YES)
+ {
+ const char *abi = targetm.get_multilib_abi_name ();
+ if (abi == NULL || strcmp (abi, target) != 0)
+ return MATCH_YES;
+ }
+
+ if (gfc_vectorized_builtins == NULL)
+ gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> ();
+
+ char *r = XNEWVEC (char, strlen (builtin) + 32);
+ sprintf (r, "__builtin_%s", builtin);
+
+ bool existed;
+ int &value = gfc_vectorized_builtins->get_or_insert (r, &existed);
+ value |= clause;
+ if (existed)
+ free (r);
+
+ return MATCH_YES;
+}
+
+/* Match an !GCC$ IVDEP statement.
+ When we come here, we have already matched the !GCC$ IVDEP string. */
+
+match
+gfc_match_gcc_ivdep (void)
+{
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ directive_ivdep = true;
+ return MATCH_YES;
+ }
+
+ gfc_error ("Syntax error in !GCC$ IVDEP directive at %C");
+ return MATCH_ERROR;
+}
+
+/* Match an !GCC$ VECTOR statement.
+ When we come here, we have already matched the !GCC$ VECTOR string. */
+
+match
+gfc_match_gcc_vector (void)
+{
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ directive_vector = true;
+ directive_novector = false;
+ return MATCH_YES;
+ }
+
+ gfc_error ("Syntax error in !GCC$ VECTOR directive at %C");
+ return MATCH_ERROR;
+}
+
+/* Match an !GCC$ NOVECTOR statement.
+ When we come here, we have already matched the !GCC$ NOVECTOR string. */
+
+match
+gfc_match_gcc_novector (void)
+{
+ if (gfc_match_eos () == MATCH_YES)
+ {
+ directive_novector = true;
+ directive_vector = false;
+ return MATCH_YES;
+ }
+
+ gfc_error ("Syntax error in !GCC$ NOVECTOR directive at %C");
+ return MATCH_ERROR;
+}
generated by cgit v1.1 at 2024-11-10 06:51:11 +0000