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author | Martin Liska <mliska@suse.cz> | 2022-01-14 16:56:44 +0100 |
---|---|---|
committer | Martin Liska <mliska@suse.cz> | 2022-01-17 22:12:04 +0100 |
commit | 5c69acb32329d49e58c26fa41ae74229a52b9106 (patch) | |
tree | ddb05f9d73afb6f998457d2ac4b720e3b3b60483 /gcc/c-family/c-attribs.cc | |
parent | 490e23032baaece71f2ec09fa1805064b150fbc2 (diff) | |
download | gcc-5c69acb32329d49e58c26fa41ae74229a52b9106.zip gcc-5c69acb32329d49e58c26fa41ae74229a52b9106.tar.gz gcc-5c69acb32329d49e58c26fa41ae74229a52b9106.tar.bz2 |
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...
* config/aarch64/aarch64-d.cc: ...here.
* config/aarch64/aarch64.c: Moved to...
* config/aarch64/aarch64.cc: ...here.
* config/aarch64/cortex-a57-fma-steering.c: Moved to...
* config/aarch64/cortex-a57-fma-steering.cc: ...here.
* config/aarch64/driver-aarch64.c: Moved to...
* config/aarch64/driver-aarch64.cc: ...here.
* config/aarch64/falkor-tag-collision-avoidance.c: Moved to...
* config/aarch64/falkor-tag-collision-avoidance.cc: ...here.
* config/aarch64/host-aarch64-darwin.c: Moved to...
* config/aarch64/host-aarch64-darwin.cc: ...here.
* config/alpha/alpha.c: Moved to...
* config/alpha/alpha.cc: ...here.
* config/alpha/driver-alpha.c: Moved to...
* config/alpha/driver-alpha.cc: ...here.
* config/arc/arc-c.c: Moved to...
* config/arc/arc-c.cc: ...here.
* config/arc/arc.c: Moved to...
* config/arc/arc.cc: ...here.
* config/arc/driver-arc.c: Moved to...
* config/arc/driver-arc.cc: ...here.
* config/arm/aarch-common.c: Moved to...
* config/arm/aarch-common.cc: ...here.
* 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: Moved to...
* config/i386/x86-tune-sched-atom.cc: ...here.
* config/i386/x86-tune-sched-bd.c: Moved to...
* config/i386/x86-tune-sched-bd.cc: ...here.
* config/i386/x86-tune-sched-core.c: Moved to...
* config/i386/x86-tune-sched-core.cc: ...here.
* config/i386/x86-tune-sched.c: Moved to...
* config/i386/x86-tune-sched.cc: ...here.
* config/ia64/ia64-c.c: Moved to...
* config/ia64/ia64-c.cc: ...here.
* config/ia64/ia64.c: Moved to...
* config/ia64/ia64.cc: ...here.
* config/iq2000/iq2000.c: Moved to...
* config/iq2000/iq2000.cc: ...here.
* config/linux.c: Moved to...
* config/linux.cc: ...here.
* config/lm32/lm32.c: Moved to...
* config/lm32/lm32.cc: ...here.
* config/m32c/m32c-pragma.c: Moved to...
* config/m32c/m32c-pragma.cc: ...here.
* config/m32c/m32c.c: Moved to...
* config/m32c/m32c.cc: ...here.
* config/m32r/m32r.c: Moved to...
* config/m32r/m32r.cc: ...here.
* config/m68k/m68k.c: Moved to...
* config/m68k/m68k.cc: ...here.
* config/mcore/mcore.c: Moved to...
* config/mcore/mcore.cc: ...here.
* config/microblaze/microblaze-c.c: Moved to...
* config/microblaze/microblaze-c.cc: ...here.
* config/microblaze/microblaze.c: Moved to...
* config/microblaze/microblaze.cc: ...here.
* config/mips/driver-native.c: Moved to...
* config/mips/driver-native.cc: ...here.
* config/mips/frame-header-opt.c: Moved to...
* config/mips/frame-header-opt.cc: ...here.
* config/mips/mips-d.c: Moved to...
* config/mips/mips-d.cc: ...here.
* config/mips/mips.c: Moved to...
* config/mips/mips.cc: ...here.
* config/mmix/mmix.c: Moved to...
* config/mmix/mmix.cc: ...here.
* config/mn10300/mn10300.c: Moved to...
* config/mn10300/mn10300.cc: ...here.
* config/moxie/moxie.c: Moved to...
* config/moxie/moxie.cc: ...here.
* config/msp430/driver-msp430.c: Moved to...
* config/msp430/driver-msp430.cc: ...here.
* config/msp430/msp430-c.c: Moved to...
* config/msp430/msp430-c.cc: ...here.
* config/msp430/msp430-devices.c: Moved to...
* config/msp430/msp430-devices.cc: ...here.
* 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/c-family/c-attribs.cc')
-rw-r--r-- | gcc/c-family/c-attribs.cc | 6142 |
1 files changed, 6142 insertions, 0 deletions
diff --git a/gcc/c-family/c-attribs.cc b/gcc/c-family/c-attribs.cc new file mode 100644 index 0000000..4fb5dbd --- /dev/null +++ b/gcc/c-family/c-attribs.cc @@ -0,0 +1,6142 @@ +/* C-family attributes handling. + Copyright (C) 1992-2022 Free Software Foundation, Inc. + +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/>. */ + +#define INCLUDE_STRING +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "target.h" +#include "function.h" +#include "tree.h" +#include "memmodel.h" +#include "c-common.h" +#include "gimple-expr.h" +#include "tm_p.h" +#include "stringpool.h" +#include "cgraph.h" +#include "diagnostic.h" +#include "intl.h" +#include "stor-layout.h" +#include "calls.h" +#include "attribs.h" +#include "varasm.h" +#include "trans-mem.h" +#include "c-objc.h" +#include "common/common-target.h" +#include "langhooks.h" +#include "tree-inline.h" +#include "toplev.h" +#include "tree-iterator.h" +#include "opts.h" +#include "gimplify.h" +#include "tree-pretty-print.h" +#include "gcc-rich-location.h" + +static tree handle_packed_attribute (tree *, tree, tree, int, bool *); +static tree handle_nocommon_attribute (tree *, tree, tree, int, bool *); +static tree handle_common_attribute (tree *, tree, tree, int, bool *); +static tree handle_hot_attribute (tree *, tree, tree, int, bool *); +static tree handle_cold_attribute (tree *, tree, tree, int, bool *); +static tree handle_no_sanitize_attribute (tree *, tree, tree, int, bool *); +static tree handle_no_sanitize_address_attribute (tree *, tree, tree, + int, bool *); +static tree handle_no_sanitize_thread_attribute (tree *, tree, tree, + int, bool *); +static tree handle_no_address_safety_analysis_attribute (tree *, tree, tree, + int, bool *); +static tree handle_no_sanitize_undefined_attribute (tree *, tree, tree, int, + bool *); +static tree handle_no_sanitize_coverage_attribute (tree *, tree, tree, int, + bool *); +static tree handle_asan_odr_indicator_attribute (tree *, tree, tree, int, + bool *); +static tree handle_stack_protect_attribute (tree *, tree, tree, int, bool *); +static tree handle_no_stack_protector_function_attribute (tree *, tree, + tree, int, bool *); +static tree handle_noinline_attribute (tree *, tree, tree, int, bool *); +static tree handle_noclone_attribute (tree *, tree, tree, int, bool *); +static tree handle_nocf_check_attribute (tree *, tree, tree, int, bool *); +static tree handle_symver_attribute (tree *, tree, tree, int, bool *); +static tree handle_noicf_attribute (tree *, tree, tree, int, bool *); +static tree handle_noipa_attribute (tree *, tree, tree, int, bool *); +static tree handle_leaf_attribute (tree *, tree, tree, int, bool *); +static tree handle_always_inline_attribute (tree *, tree, tree, int, + bool *); +static tree handle_gnu_inline_attribute (tree *, tree, tree, int, bool *); +static tree handle_artificial_attribute (tree *, tree, tree, int, bool *); +static tree handle_flatten_attribute (tree *, tree, tree, int, bool *); +static tree handle_error_attribute (tree *, tree, tree, int, bool *); +static tree handle_used_attribute (tree *, tree, tree, int, bool *); +static tree handle_uninitialized_attribute (tree *, tree, tree, int, bool *); +static tree handle_externally_visible_attribute (tree *, tree, tree, int, + bool *); +static tree handle_no_reorder_attribute (tree *, tree, tree, int, + bool *); +static tree handle_const_attribute (tree *, tree, tree, int, bool *); +static tree handle_transparent_union_attribute (tree *, tree, tree, + int, bool *); +static tree handle_scalar_storage_order_attribute (tree *, tree, tree, + int, bool *); +static tree handle_constructor_attribute (tree *, tree, tree, int, bool *); +static tree handle_destructor_attribute (tree *, tree, tree, int, bool *); +static tree handle_mode_attribute (tree *, tree, tree, int, bool *); +static tree handle_section_attribute (tree *, tree, tree, int, bool *); +static tree handle_special_var_sec_attribute (tree *, tree, tree, int, bool *); +static tree handle_aligned_attribute (tree *, tree, tree, int, bool *); +static tree handle_warn_if_not_aligned_attribute (tree *, tree, tree, + int, bool *); +static tree handle_weak_attribute (tree *, tree, tree, int, bool *) ; +static tree handle_noplt_attribute (tree *, tree, tree, int, bool *) ; +static tree handle_alias_ifunc_attribute (bool, tree *, tree, tree, bool *); +static tree handle_ifunc_attribute (tree *, tree, tree, int, bool *); +static tree handle_alias_attribute (tree *, tree, tree, int, bool *); +static tree handle_weakref_attribute (tree *, tree, tree, int, bool *) ; +static tree handle_visibility_attribute (tree *, tree, tree, int, + bool *); +static tree handle_tls_model_attribute (tree *, tree, tree, int, + bool *); +static tree handle_no_instrument_function_attribute (tree *, tree, + tree, int, bool *); +static tree handle_no_profile_instrument_function_attribute (tree *, tree, + tree, int, bool *); +static tree handle_malloc_attribute (tree *, tree, tree, int, bool *); +static tree handle_dealloc_attribute (tree *, tree, tree, int, bool *); +static tree handle_tainted_args_attribute (tree *, tree, tree, int, bool *); +static tree handle_returns_twice_attribute (tree *, tree, tree, int, bool *); +static tree handle_no_limit_stack_attribute (tree *, tree, tree, int, + bool *); +static tree handle_pure_attribute (tree *, tree, tree, int, bool *); +static tree handle_tm_attribute (tree *, tree, tree, int, bool *); +static tree handle_tm_wrap_attribute (tree *, tree, tree, int, bool *); +static tree handle_novops_attribute (tree *, tree, tree, int, bool *); +static tree handle_unavailable_attribute (tree *, tree, tree, int, + bool *); +static tree handle_vector_size_attribute (tree *, tree, tree, int, + bool *) ATTRIBUTE_NONNULL(3); +static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *); +static tree handle_nonstring_attribute (tree *, tree, tree, int, bool *); +static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *); +static tree handle_cleanup_attribute (tree *, tree, tree, int, bool *); +static tree handle_warn_unused_result_attribute (tree *, tree, tree, int, + bool *); +static tree handle_access_attribute (tree *, tree, tree, int, bool *); + +static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *); +static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *); +static tree handle_alloc_size_attribute (tree *, tree, tree, int, bool *); +static tree handle_alloc_align_attribute (tree *, tree, tree, int, bool *); +static tree handle_assume_aligned_attribute (tree *, tree, tree, int, bool *); +static tree handle_target_attribute (tree *, tree, tree, int, bool *); +static tree handle_target_clones_attribute (tree *, tree, tree, int, bool *); +static tree handle_optimize_attribute (tree *, tree, tree, int, bool *); +static tree ignore_attribute (tree *, tree, tree, int, bool *); +static tree handle_no_split_stack_attribute (tree *, tree, tree, int, bool *); +static tree handle_zero_call_used_regs_attribute (tree *, tree, tree, int, + bool *); +static tree handle_argspec_attribute (tree *, tree, tree, int, bool *); +static tree handle_fnspec_attribute (tree *, tree, tree, int, bool *); +static tree handle_warn_unused_attribute (tree *, tree, tree, int, bool *); +static tree handle_returns_nonnull_attribute (tree *, tree, tree, int, bool *); +static tree handle_omp_declare_simd_attribute (tree *, tree, tree, int, + bool *); +static tree handle_omp_declare_variant_attribute (tree *, tree, tree, int, + bool *); +static tree handle_simd_attribute (tree *, tree, tree, int, bool *); +static tree handle_omp_declare_target_attribute (tree *, tree, tree, int, + bool *); +static tree handle_non_overlapping_attribute (tree *, tree, tree, int, bool *); +static tree handle_designated_init_attribute (tree *, tree, tree, int, bool *); +static tree handle_patchable_function_entry_attribute (tree *, tree, tree, + int, bool *); +static tree handle_copy_attribute (tree *, tree, tree, int, bool *); +static tree handle_nsobject_attribute (tree *, tree, tree, int, bool *); +static tree handle_objc_root_class_attribute (tree *, tree, tree, int, bool *); +static tree handle_objc_nullability_attribute (tree *, tree, tree, int, bool *); +static tree handle_signed_bool_precision_attribute (tree *, tree, tree, int, + bool *); +static tree handle_retain_attribute (tree *, tree, tree, int, bool *); + +/* Helper to define attribute exclusions. */ +#define ATTR_EXCL(name, function, type, variable) \ + { name, function, type, variable } + +/* Define attributes that are mutually exclusive with one another. */ +static const struct attribute_spec::exclusions attr_aligned_exclusions[] = +{ + /* Attribute name exclusion applies to: + function, type, variable */ + ATTR_EXCL ("aligned", true, false, false), + ATTR_EXCL ("packed", true, false, false), + ATTR_EXCL (NULL, false, false, false) +}; + +extern const struct attribute_spec::exclusions attr_cold_hot_exclusions[] = +{ + ATTR_EXCL ("cold", true, true, true), + ATTR_EXCL ("hot", true, true, true), + ATTR_EXCL (NULL, false, false, false) +}; + +static const struct attribute_spec::exclusions attr_common_exclusions[] = +{ + ATTR_EXCL ("common", true, true, true), + ATTR_EXCL ("nocommon", true, true, true), + ATTR_EXCL (NULL, false, false, false), +}; + +static const struct attribute_spec::exclusions attr_inline_exclusions[] = +{ + ATTR_EXCL ("noinline", true, true, true), + ATTR_EXCL (NULL, false, false, false), +}; + +static const struct attribute_spec::exclusions attr_noinline_exclusions[] = +{ + ATTR_EXCL ("always_inline", true, true, true), + ATTR_EXCL ("gnu_inline", true, true, true), + ATTR_EXCL (NULL, false, false, false), +}; + +extern const struct attribute_spec::exclusions attr_noreturn_exclusions[] = +{ + ATTR_EXCL ("alloc_align", true, true, true), + ATTR_EXCL ("alloc_size", true, true, true), + ATTR_EXCL ("const", true, true, true), + ATTR_EXCL ("malloc", true, true, true), + ATTR_EXCL ("pure", true, true, true), + ATTR_EXCL ("returns_twice", true, true, true), + ATTR_EXCL ("warn_unused_result", true, true, true), + ATTR_EXCL (NULL, false, false, false), +}; + +static const struct attribute_spec::exclusions +attr_warn_unused_result_exclusions[] = +{ + ATTR_EXCL ("noreturn", true, true, true), + ATTR_EXCL ("warn_unused_result", true, true, true), + ATTR_EXCL (NULL, false, false, false), +}; + +static const struct attribute_spec::exclusions attr_returns_twice_exclusions[] = +{ + ATTR_EXCL ("noreturn", true, true, true), + ATTR_EXCL (NULL, false, false, false), +}; + +/* Exclusions that apply to attribute alloc_align, alloc_size, and malloc. */ +static const struct attribute_spec::exclusions attr_alloc_exclusions[] = +{ + ATTR_EXCL ("const", true, true, true), + ATTR_EXCL ("noreturn", true, true, true), + ATTR_EXCL ("pure", true, true, true), + ATTR_EXCL (NULL, false, false, false), +}; + +static const struct attribute_spec::exclusions attr_const_pure_exclusions[] = +{ + ATTR_EXCL ("const", true, true, true), + ATTR_EXCL ("alloc_align", true, true, true), + ATTR_EXCL ("alloc_size", true, true, true), + ATTR_EXCL ("malloc", true, true, true), + ATTR_EXCL ("noreturn", true, true, true), + ATTR_EXCL ("pure", true, true, true), + ATTR_EXCL (NULL, false, false, false) +}; + +/* Exclusions that apply to attributes that put declarations in specific + sections. */ +static const struct attribute_spec::exclusions attr_section_exclusions[] = +{ + ATTR_EXCL ("noinit", true, true, true), + ATTR_EXCL ("persistent", true, true, true), + ATTR_EXCL ("section", true, true, true), + ATTR_EXCL (NULL, false, false, false), +}; + +static const struct attribute_spec::exclusions attr_stack_protect_exclusions[] = +{ + ATTR_EXCL ("stack_protect", true, false, false), + ATTR_EXCL ("no_stack_protector", true, false, false), + ATTR_EXCL (NULL, false, false, false), +}; + + +/* Table of machine-independent attributes common to all C-like languages. + + Current list of processed common attributes: nonnull. */ +const struct attribute_spec c_common_attribute_table[] = +{ + /* { name, min_len, max_len, decl_req, type_req, fn_type_req, + affects_type_identity, handler, exclude } */ + { "signed_bool_precision", 1, 1, false, true, false, true, + handle_signed_bool_precision_attribute, NULL }, + { "packed", 0, 0, false, false, false, false, + handle_packed_attribute, + attr_aligned_exclusions }, + { "nocommon", 0, 0, true, false, false, false, + handle_nocommon_attribute, + attr_common_exclusions }, + { "common", 0, 0, true, false, false, false, + handle_common_attribute, + attr_common_exclusions }, + /* FIXME: logically, noreturn attributes should be listed as + "false, true, true" and apply to function types. But implementing this + would require all the places in the compiler that use TREE_THIS_VOLATILE + on a decl to identify non-returning functions to be located and fixed + to check the function type instead. */ + { "noreturn", 0, 0, true, false, false, false, + handle_noreturn_attribute, + attr_noreturn_exclusions }, + { "volatile", 0, 0, true, false, false, false, + handle_noreturn_attribute, NULL }, + { "stack_protect", 0, 0, true, false, false, false, + handle_stack_protect_attribute, + attr_stack_protect_exclusions }, + { "no_stack_protector", 0, 0, true, false, false, false, + handle_no_stack_protector_function_attribute, + attr_stack_protect_exclusions }, + { "noinline", 0, 0, true, false, false, false, + handle_noinline_attribute, + attr_noinline_exclusions }, + { "noclone", 0, 0, true, false, false, false, + handle_noclone_attribute, NULL }, + { "no_icf", 0, 0, true, false, false, false, + handle_noicf_attribute, NULL }, + { "noipa", 0, 0, true, false, false, false, + handle_noipa_attribute, NULL }, + { "leaf", 0, 0, true, false, false, false, + handle_leaf_attribute, NULL }, + { "always_inline", 0, 0, true, false, false, false, + handle_always_inline_attribute, + attr_inline_exclusions }, + { "gnu_inline", 0, 0, true, false, false, false, + handle_gnu_inline_attribute, + attr_inline_exclusions }, + { "artificial", 0, 0, true, false, false, false, + handle_artificial_attribute, NULL }, + { "flatten", 0, 0, true, false, false, false, + handle_flatten_attribute, NULL }, + { "used", 0, 0, true, false, false, false, + handle_used_attribute, NULL }, + { "unused", 0, 0, false, false, false, false, + handle_unused_attribute, NULL }, + { "uninitialized", 0, 0, true, false, false, false, + handle_uninitialized_attribute, NULL }, + { "retain", 0, 0, true, false, false, false, + handle_retain_attribute, NULL }, + { "externally_visible", 0, 0, true, false, false, false, + handle_externally_visible_attribute, NULL }, + { "no_reorder", 0, 0, true, false, false, false, + handle_no_reorder_attribute, NULL }, + /* The same comments as for noreturn attributes apply to const ones. */ + { "const", 0, 0, true, false, false, false, + handle_const_attribute, + attr_const_pure_exclusions }, + { "scalar_storage_order", 1, 1, false, false, false, false, + handle_scalar_storage_order_attribute, NULL }, + { "transparent_union", 0, 0, false, false, false, false, + handle_transparent_union_attribute, NULL }, + { "constructor", 0, 1, true, false, false, false, + handle_constructor_attribute, NULL }, + { "destructor", 0, 1, true, false, false, false, + handle_destructor_attribute, NULL }, + { "mode", 1, 1, false, true, false, false, + handle_mode_attribute, NULL }, + { "section", 1, 1, true, false, false, false, + handle_section_attribute, attr_section_exclusions }, + { "aligned", 0, 1, false, false, false, false, + handle_aligned_attribute, + attr_aligned_exclusions }, + { "warn_if_not_aligned", 0, 1, false, false, false, false, + handle_warn_if_not_aligned_attribute, NULL }, + { "weak", 0, 0, true, false, false, false, + handle_weak_attribute, NULL }, + { "noplt", 0, 0, true, false, false, false, + handle_noplt_attribute, NULL }, + { "ifunc", 1, 1, true, false, false, false, + handle_ifunc_attribute, NULL }, + { "alias", 1, 1, true, false, false, false, + handle_alias_attribute, NULL }, + { "weakref", 0, 1, true, false, false, false, + handle_weakref_attribute, NULL }, + { "no_instrument_function", 0, 0, true, false, false, false, + handle_no_instrument_function_attribute, + NULL }, + { "no_profile_instrument_function", 0, 0, true, false, false, false, + handle_no_profile_instrument_function_attribute, + NULL }, + { "malloc", 0, 2, true, false, false, false, + handle_malloc_attribute, attr_alloc_exclusions }, + { "returns_twice", 0, 0, true, false, false, false, + handle_returns_twice_attribute, + attr_returns_twice_exclusions }, + { "no_stack_limit", 0, 0, true, false, false, false, + handle_no_limit_stack_attribute, NULL }, + { "pure", 0, 0, true, false, false, false, + handle_pure_attribute, + attr_const_pure_exclusions }, + { "transaction_callable", 0, 0, false, true, false, false, + handle_tm_attribute, NULL }, + { "transaction_unsafe", 0, 0, false, true, false, true, + handle_tm_attribute, NULL }, + { "transaction_safe", 0, 0, false, true, false, true, + handle_tm_attribute, NULL }, + { "transaction_safe_dynamic", 0, 0, true, false, false, false, + handle_tm_attribute, NULL }, + { "transaction_may_cancel_outer", 0, 0, false, true, false, false, + handle_tm_attribute, NULL }, + /* ??? These two attributes didn't make the transition from the + Intel language document to the multi-vendor language document. */ + { "transaction_pure", 0, 0, false, true, false, false, + handle_tm_attribute, NULL }, + { "transaction_wrap", 1, 1, true, false, false, false, + handle_tm_wrap_attribute, NULL }, + /* For internal use (marking of builtins) only. The name contains space + to prevent its usage in source code. */ + { "no vops", 0, 0, true, false, false, false, + handle_novops_attribute, NULL }, + { "deprecated", 0, 1, false, false, false, false, + handle_deprecated_attribute, NULL }, + { "unavailable", 0, 1, false, false, false, false, + handle_unavailable_attribute, NULL }, + { "vector_size", 1, 1, false, true, false, true, + handle_vector_size_attribute, NULL }, + { "visibility", 1, 1, false, false, false, false, + handle_visibility_attribute, NULL }, + { "tls_model", 1, 1, true, false, false, false, + handle_tls_model_attribute, NULL }, + { "nonnull", 0, -1, false, true, true, false, + handle_nonnull_attribute, NULL }, + { "nonstring", 0, 0, true, false, false, false, + handle_nonstring_attribute, NULL }, + { "nothrow", 0, 0, true, false, false, false, + handle_nothrow_attribute, NULL }, + { "may_alias", 0, 0, false, true, false, false, NULL, NULL }, + { "cleanup", 1, 1, true, false, false, false, + handle_cleanup_attribute, NULL }, + { "warn_unused_result", 0, 0, false, true, true, false, + handle_warn_unused_result_attribute, + attr_warn_unused_result_exclusions }, + { "sentinel", 0, 1, false, true, true, false, + handle_sentinel_attribute, NULL }, + /* For internal use (marking of builtins) only. The name contains space + to prevent its usage in source code. */ + { "type generic", 0, 0, false, true, true, false, + handle_type_generic_attribute, NULL }, + { "alloc_size", 1, 2, false, true, true, false, + handle_alloc_size_attribute, + attr_alloc_exclusions }, + { "cold", 0, 0, true, false, false, false, + handle_cold_attribute, + attr_cold_hot_exclusions }, + { "hot", 0, 0, true, false, false, false, + handle_hot_attribute, + attr_cold_hot_exclusions }, + { "no_address_safety_analysis", + 0, 0, true, false, false, false, + handle_no_address_safety_analysis_attribute, + NULL }, + { "no_sanitize", 1, -1, true, false, false, false, + handle_no_sanitize_attribute, NULL }, + { "no_sanitize_address", 0, 0, true, false, false, false, + handle_no_sanitize_address_attribute, NULL }, + { "no_sanitize_thread", 0, 0, true, false, false, false, + handle_no_sanitize_thread_attribute, NULL }, + { "no_sanitize_undefined", 0, 0, true, false, false, false, + handle_no_sanitize_undefined_attribute, NULL }, + { "no_sanitize_coverage", 0, 0, true, false, false, false, + handle_no_sanitize_coverage_attribute, NULL }, + { "asan odr indicator", 0, 0, true, false, false, false, + handle_asan_odr_indicator_attribute, NULL }, + { "warning", 1, 1, true, false, false, false, + handle_error_attribute, NULL }, + { "error", 1, 1, true, false, false, false, + handle_error_attribute, NULL }, + { "target", 1, -1, true, false, false, false, + handle_target_attribute, NULL }, + { "target_clones", 1, -1, true, false, false, false, + handle_target_clones_attribute, NULL }, + { "optimize", 1, -1, true, false, false, false, + handle_optimize_attribute, NULL }, + /* For internal use only. The leading '*' both prevents its usage in + source code and signals that it may be overridden by machine tables. */ + { "*tm regparm", 0, 0, false, true, true, false, + ignore_attribute, NULL }, + { "no_split_stack", 0, 0, true, false, false, false, + handle_no_split_stack_attribute, NULL }, + { "zero_call_used_regs", 1, 1, true, false, false, false, + handle_zero_call_used_regs_attribute, NULL }, + /* For internal use only (marking of function arguments). + The name contains a space to prevent its usage in source code. */ + { "arg spec", 1, -1, true, false, false, false, + handle_argspec_attribute, NULL }, + /* For internal use (marking of builtins and runtime functions) only. + The name contains space to prevent its usage in source code. */ + { "fn spec", 1, 1, false, true, true, false, + handle_fnspec_attribute, NULL }, + { "warn_unused", 0, 0, false, false, false, false, + handle_warn_unused_attribute, NULL }, + { "returns_nonnull", 0, 0, false, true, true, false, + handle_returns_nonnull_attribute, NULL }, + { "omp declare simd", 0, -1, true, false, false, false, + handle_omp_declare_simd_attribute, NULL }, + { "omp declare variant base", 0, -1, true, false, false, false, + handle_omp_declare_variant_attribute, NULL }, + { "omp declare variant variant", 0, -1, true, false, false, false, + handle_omp_declare_variant_attribute, NULL }, + { "simd", 0, 1, true, false, false, false, + handle_simd_attribute, NULL }, + { "omp declare target", 0, -1, true, false, false, false, + handle_omp_declare_target_attribute, NULL }, + { "omp declare target link", 0, 0, true, false, false, false, + handle_omp_declare_target_attribute, NULL }, + { "omp declare target implicit", 0, 0, true, false, false, false, + handle_omp_declare_target_attribute, NULL }, + { "omp declare target host", 0, 0, true, false, false, false, + handle_omp_declare_target_attribute, NULL }, + { "omp declare target nohost", 0, 0, true, false, false, false, + handle_omp_declare_target_attribute, NULL }, + { "omp declare target block", 0, 0, true, false, false, false, + handle_omp_declare_target_attribute, NULL }, + { "non overlapping", 0, 0, true, false, false, false, + handle_non_overlapping_attribute, NULL }, + { "alloc_align", 1, 1, false, true, true, false, + handle_alloc_align_attribute, + attr_alloc_exclusions }, + { "assume_aligned", 1, 2, false, true, true, false, + handle_assume_aligned_attribute, NULL }, + { "designated_init", 0, 0, false, true, false, false, + handle_designated_init_attribute, NULL }, + { "fallthrough", 0, 0, false, false, false, false, + handle_fallthrough_attribute, NULL }, + { "patchable_function_entry", 1, 2, true, false, false, false, + handle_patchable_function_entry_attribute, + NULL }, + { "nocf_check", 0, 0, false, true, true, true, + handle_nocf_check_attribute, NULL }, + { "symver", 1, -1, true, false, false, false, + handle_symver_attribute, NULL}, + { "copy", 1, 1, false, false, false, false, + handle_copy_attribute, NULL }, + { "noinit", 0, 0, true, false, false, false, + handle_special_var_sec_attribute, attr_section_exclusions }, + { "persistent", 0, 0, true, false, false, false, + handle_special_var_sec_attribute, attr_section_exclusions }, + { "access", 1, 3, false, true, true, false, + handle_access_attribute, NULL }, + /* Attributes used by Objective-C. */ + { "NSObject", 0, 0, true, false, false, false, + handle_nsobject_attribute, NULL }, + { "objc_root_class", 0, 0, true, false, false, false, + handle_objc_root_class_attribute, NULL }, + { "objc_nullability", 1, 1, true, false, false, false, + handle_objc_nullability_attribute, NULL }, + { "*dealloc", 1, 2, true, false, false, false, + handle_dealloc_attribute, NULL }, + { "tainted_args", 0, 0, true, false, false, false, + handle_tainted_args_attribute, NULL }, + { NULL, 0, 0, false, false, false, false, NULL, NULL } +}; + +/* Give the specifications for the format attributes, used by C and all + descendants. + + Current list of processed format attributes: format, format_arg. */ +const struct attribute_spec c_common_format_attribute_table[] = +{ + /* { name, min_len, max_len, decl_req, type_req, fn_type_req, + affects_type_identity, handler, exclude } */ + { "format", 3, 3, false, true, true, false, + handle_format_attribute, NULL }, + { "format_arg", 1, 1, false, true, true, false, + handle_format_arg_attribute, NULL }, + { NULL, 0, 0, false, false, false, false, NULL, NULL } +}; + +/* Returns TRUE iff the attribute indicated by ATTR_ID takes a plain + identifier as an argument, so the front end shouldn't look it up. */ + +bool +attribute_takes_identifier_p (const_tree attr_id) +{ + const struct attribute_spec *spec = lookup_attribute_spec (attr_id); + if (spec == NULL) + /* Unknown attribute that we'll end up ignoring, return true so we + don't complain about an identifier argument. */ + return true; + else if (!strcmp ("mode", spec->name) + || !strcmp ("format", spec->name) + || !strcmp ("cleanup", spec->name) + || !strcmp ("access", spec->name)) + return true; + else + return targetm.attribute_takes_identifier_p (attr_id); +} + +/* Verify that argument value POS at position ARGNO to attribute NAME + applied to function TYPE refers to a function parameter at position + POS and the expected type CODE. Treat CODE == INTEGER_TYPE as + matching all C integral types except bool. If successful, return + POS after default conversions, if any. Otherwise, issue appropriate + warnings and return null. A non-zero 1-based ARGNO should be passed + in by callers only for attributes with more than one argument. */ + +tree +positional_argument (const_tree fntype, const_tree atname, tree pos, + tree_code code, int argno /* = 0 */, + int flags /* = posargflags () */) +{ + if (pos && TREE_CODE (pos) != IDENTIFIER_NODE + && TREE_CODE (pos) != FUNCTION_DECL) + pos = default_conversion (pos); + + tree postype = TREE_TYPE (pos); + if (pos == error_mark_node || !postype) + { + /* Only mention the positional argument number when it's non-zero. */ + if (argno < 1) + warning (OPT_Wattributes, + "%qE attribute argument is invalid", atname); + else + warning (OPT_Wattributes, + "%qE attribute argument %i is invalid", atname, argno); + + return NULL_TREE; + } + + if (!INTEGRAL_TYPE_P (postype)) + { + /* Handle this case specially to avoid mentioning the value + of pointer constants in diagnostics. Only mention + the positional argument number when it's non-zero. */ + if (argno < 1) + warning (OPT_Wattributes, + "%qE attribute argument has type %qT", + atname, postype); + else + warning (OPT_Wattributes, + "%qE attribute argument %i has type %qT", + atname, argno, postype); + + return NULL_TREE; + } + + if (TREE_CODE (pos) != INTEGER_CST) + { + /* Only mention the argument number when it's non-zero. */ + if (argno < 1) + warning (OPT_Wattributes, + "%qE attribute argument value %qE is not an integer " + "constant", + atname, pos); + else + warning (OPT_Wattributes, + "%qE attribute argument %i value %qE is not an integer " + "constant", + atname, argno, pos); + + return NULL_TREE; + } + + /* Argument positions are 1-based. */ + if (integer_zerop (pos)) + { + if (flags & POSARG_ZERO) + /* Zero is explicitly allowed. */ + return pos; + + if (argno < 1) + warning (OPT_Wattributes, + "%qE attribute argument value %qE does not refer to " + "a function parameter", + atname, pos); + else + warning (OPT_Wattributes, + "%qE attribute argument %i value %qE does not refer to " + "a function parameter", + atname, argno, pos); + + return NULL_TREE; + } + + if (!prototype_p (fntype)) + return pos; + + /* Verify that the argument position does not exceed the number + of formal arguments to the function. When POSARG_ELLIPSIS + is set, ARGNO may be beyond the last argument of a vararg + function. */ + unsigned nargs = type_num_arguments (fntype); + if (!nargs + || !tree_fits_uhwi_p (pos) + || ((flags & POSARG_ELLIPSIS) == 0 + && !IN_RANGE (tree_to_uhwi (pos), 1, nargs))) + { + + if (argno < 1) + warning (OPT_Wattributes, + "%qE attribute argument value %qE exceeds the number " + "of function parameters %u", + atname, pos, nargs); + else + warning (OPT_Wattributes, + "%qE attribute argument %i value %qE exceeds the number " + "of function parameters %u", + atname, argno, pos, nargs); + return NULL_TREE; + } + + /* Verify that the type of the referenced formal argument matches + the expected type. */ + unsigned HOST_WIDE_INT ipos = tree_to_uhwi (pos); + + /* Zero was handled above. */ + gcc_assert (ipos != 0); + + if (tree argtype = type_argument_type (fntype, ipos)) + { + if (argtype == error_mark_node) + return NULL_TREE; + + if (flags & POSARG_ELLIPSIS) + { + if (argno < 1) + error ("%qE attribute argument value %qE does not refer to " + "a variable argument list", + atname, pos); + else + error ("%qE attribute argument %i value %qE does not refer to " + "a variable argument list", + atname, argno, pos); + return NULL_TREE; + } + + /* Where the expected code is STRING_CST accept any pointer + expected by attribute format (this includes possibly qualified + char pointers and, for targets like Darwin, also pointers to + struct CFString). */ + bool type_match; + if (code == STRING_CST) + type_match = valid_format_string_type_p (argtype); + else if (code == INTEGER_TYPE) + /* For integers, accept enums, wide characters and other types + that match INTEGRAL_TYPE_P except for bool. */ + type_match = (INTEGRAL_TYPE_P (argtype) + && TREE_CODE (argtype) != BOOLEAN_TYPE); + else + type_match = TREE_CODE (argtype) == code; + + if (!type_match) + { + if (code == STRING_CST) + { + /* Reject invalid format strings with an error. */ + if (argno < 1) + error ("%qE attribute argument value %qE refers to " + "parameter type %qT", + atname, pos, argtype); + else + error ("%qE attribute argument %i value %qE refers to " + "parameter type %qT", + atname, argno, pos, argtype); + + return NULL_TREE; + } + + if (argno < 1) + warning (OPT_Wattributes, + "%qE attribute argument value %qE refers to " + "parameter type %qT", + atname, pos, argtype); + else + warning (OPT_Wattributes, + "%qE attribute argument %i value %qE refers to " + "parameter type %qT", + atname, argno, pos, argtype); + return NULL_TREE; + } + } + else if (!(flags & POSARG_ELLIPSIS)) + { + if (argno < 1) + warning (OPT_Wattributes, + "%qE attribute argument value %qE refers to " + "a variadic function parameter of unknown type", + atname, pos); + else + warning (OPT_Wattributes, + "%qE attribute argument %i value %qE refers to " + "a variadic function parameter of unknown type", + atname, argno, pos); + return NULL_TREE; + } + + return pos; +} + +/* Return the first of DECL or TYPE attributes installed in NODE if it's + a DECL, or TYPE attributes if it's a TYPE, or null otherwise. */ + +static tree +decl_or_type_attrs (tree node) +{ + if (DECL_P (node)) + { + if (tree attrs = DECL_ATTRIBUTES (node)) + return attrs; + + tree type = TREE_TYPE (node); + return TYPE_ATTRIBUTES (type); + } + + if (TYPE_P (node)) + return TYPE_ATTRIBUTES (node); + + return NULL_TREE; +} + +/* Given a pair of NODEs for arbitrary DECLs or TYPEs, validate one or + two integral or string attribute arguments NEWARGS to be applied to + NODE[0] for the absence of conflicts with the same attribute arguments + already applied to NODE[1]. Issue a warning for conflicts and return + false. Otherwise, when no conflicts are found, return true. */ + +static bool +validate_attr_args (tree node[2], tree name, tree newargs[2]) +{ + /* First validate the arguments against those already applied to + the same declaration (or type). */ + tree self[2] = { node[0], node[0] }; + if (node[0] != node[1] && !validate_attr_args (self, name, newargs)) + return false; + + if (!node[1]) + return true; + + /* Extract the same attribute from the previous declaration or type. */ + tree prevattr = decl_or_type_attrs (node[1]); + const char* const namestr = IDENTIFIER_POINTER (name); + prevattr = lookup_attribute (namestr, prevattr); + if (!prevattr) + return true; + + /* Extract one or both attribute arguments. */ + tree prevargs[2]; + prevargs[0] = TREE_VALUE (TREE_VALUE (prevattr)); + prevargs[1] = TREE_CHAIN (TREE_VALUE (prevattr)); + if (prevargs[1]) + prevargs[1] = TREE_VALUE (prevargs[1]); + + /* Both arguments must be equal or, for the second pair, neither must + be provided to succeed. */ + bool arg1eq, arg2eq; + if (TREE_CODE (newargs[0]) == INTEGER_CST) + { + arg1eq = tree_int_cst_equal (newargs[0], prevargs[0]); + if (newargs[1] && prevargs[1]) + arg2eq = tree_int_cst_equal (newargs[1], prevargs[1]); + else + arg2eq = newargs[1] == prevargs[1]; + } + else if (TREE_CODE (newargs[0]) == STRING_CST) + { + const char *s0 = TREE_STRING_POINTER (newargs[0]); + const char *s1 = TREE_STRING_POINTER (prevargs[0]); + arg1eq = strcmp (s0, s1) == 0; + if (newargs[1] && prevargs[1]) + { + s0 = TREE_STRING_POINTER (newargs[1]); + s1 = TREE_STRING_POINTER (prevargs[1]); + arg2eq = strcmp (s0, s1) == 0; + } + else + arg2eq = newargs[1] == prevargs[1]; + } + else + gcc_unreachable (); + + if (arg1eq && arg2eq) + return true; + + /* If the two locations are different print a note pointing to + the previous one. */ + const location_t curloc = input_location; + const location_t prevloc = + DECL_P (node[1]) ? DECL_SOURCE_LOCATION (node[1]) : curloc; + + /* Format the attribute specification for convenience. */ + char newspec[80], prevspec[80]; + if (newargs[1]) + snprintf (newspec, sizeof newspec, "%s (%s, %s)", namestr, + print_generic_expr_to_str (newargs[0]), + print_generic_expr_to_str (newargs[1])); + else + snprintf (newspec, sizeof newspec, "%s (%s)", namestr, + print_generic_expr_to_str (newargs[0])); + + if (prevargs[1]) + snprintf (prevspec, sizeof prevspec, "%s (%s, %s)", namestr, + print_generic_expr_to_str (prevargs[0]), + print_generic_expr_to_str (prevargs[1])); + else + snprintf (prevspec, sizeof prevspec, "%s (%s)", namestr, + print_generic_expr_to_str (prevargs[0])); + + if (warning_at (curloc, OPT_Wattributes, + "ignoring attribute %qs because it conflicts " + "with previous %qs", + newspec, prevspec) + && curloc != prevloc) + inform (prevloc, "previous declaration here"); + + return false; +} + +/* Convenience wrapper for validate_attr_args to validate a single + attribute argument. Used by handlers for attributes that take + just a single argument. */ + +static bool +validate_attr_arg (tree node[2], tree name, tree newarg) +{ + tree argarray[2] = { newarg, NULL_TREE }; + return validate_attr_args (node, name, argarray); +} + +/* Attribute handlers common to C front ends. */ + +/* Handle a "signed_bool_precision" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_signed_bool_precision_attribute (tree *node, tree name, tree args, + int, bool *no_add_attrs) +{ + *no_add_attrs = true; + if (!flag_gimple) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + return NULL_TREE; + } + + if (!TYPE_P (*node) || TREE_CODE (*node) != BOOLEAN_TYPE) + { + warning (OPT_Wattributes, "%qE attribute only supported on " + "boolean types", name); + return NULL_TREE; + } + + unsigned HOST_WIDE_INT prec = HOST_WIDE_INT_M1U; + if (tree_fits_uhwi_p (TREE_VALUE (args))) + prec = tree_to_uhwi (TREE_VALUE (args)); + if (prec > MAX_FIXED_MODE_SIZE) + { + warning (OPT_Wattributes, "%qE attribute with unsupported boolean " + "precision", name); + return NULL_TREE; + } + + tree new_type = build_nonstandard_boolean_type (prec); + *node = lang_hooks.types.reconstruct_complex_type (*node, new_type); + + return NULL_TREE; +} + +/* Handle a "packed" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_packed_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int flags, bool *no_add_attrs) +{ + if (TYPE_P (*node)) + { + if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) + { + warning (OPT_Wattributes, + "%qE attribute ignored for type %qT", name, *node); + *no_add_attrs = true; + } + else + TYPE_PACKED (*node) = 1; + } + else if (TREE_CODE (*node) == FIELD_DECL) + { + if (TYPE_ALIGN (TREE_TYPE (*node)) <= BITS_PER_UNIT + /* Still pack bitfields. */ + && ! DECL_C_BIT_FIELD (*node)) + warning (OPT_Wattributes, + "%qE attribute ignored for field of type %qT", + name, TREE_TYPE (*node)); + else + DECL_PACKED (*node) = 1; + } + /* We can't set DECL_PACKED for a VAR_DECL, because the bit is + used for DECL_REGISTER. It wouldn't mean anything anyway. + We can't set DECL_PACKED on the type of a TYPE_DECL, because + that changes what the typedef is typing. */ + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "nocommon" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_nocommon_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (VAR_P (*node)) + DECL_COMMON (*node) = 0; + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "common" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_common_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (VAR_P (*node)) + DECL_COMMON (*node) = 1; + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "noreturn" attribute; arguments as in + struct attribute_spec.handler. */ + +tree +handle_noreturn_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree type = TREE_TYPE (*node); + + /* See FIXME comment in c_common_attribute_table. */ + if (TREE_CODE (*node) == FUNCTION_DECL + || objc_method_decl (TREE_CODE (*node))) + TREE_THIS_VOLATILE (*node) = 1; + else if (TREE_CODE (type) == POINTER_TYPE + && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) + TREE_TYPE (*node) + = (build_qualified_type + (build_pointer_type + (build_type_variant (TREE_TYPE (type), + TYPE_READONLY (TREE_TYPE (type)), 1)), + TYPE_QUALS (type))); + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "hot" and attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_hot_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL + || TREE_CODE (*node) == LABEL_DECL) + { + /* Attribute hot processing is done later with lookup_attribute. */ + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "cold" and attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_cold_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL + || TREE_CODE (*node) == LABEL_DECL) + { + /* Attribute cold processing is done later with lookup_attribute. */ + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Add FLAGS for a function NODE to no_sanitize_flags in DECL_ATTRIBUTES. */ + +void +add_no_sanitize_value (tree node, unsigned int flags) +{ + tree attr = lookup_attribute ("no_sanitize", DECL_ATTRIBUTES (node)); + if (attr) + { + unsigned int old_value = tree_to_uhwi (TREE_VALUE (attr)); + flags |= old_value; + + if (flags == old_value) + return; + + TREE_VALUE (attr) = build_int_cst (unsigned_type_node, flags); + } + else + DECL_ATTRIBUTES (node) + = tree_cons (get_identifier ("no_sanitize"), + build_int_cst (unsigned_type_node, flags), + DECL_ATTRIBUTES (node)); +} + +/* Handle a "no_sanitize" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_sanitize_attribute (tree *node, tree name, tree args, int, + bool *no_add_attrs) +{ + unsigned int flags = 0; + *no_add_attrs = true; + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + return NULL_TREE; + } + + for (; args; args = TREE_CHAIN (args)) + { + tree id = TREE_VALUE (args); + if (TREE_CODE (id) != STRING_CST) + { + error ("%qE argument not a string", name); + return NULL_TREE; + } + + char *string = ASTRDUP (TREE_STRING_POINTER (id)); + flags |= parse_no_sanitize_attribute (string); + } + + add_no_sanitize_value (*node, flags); + + return NULL_TREE; +} + +/* Handle a "no_sanitize_address" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_sanitize_address_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + *no_add_attrs = true; + if (TREE_CODE (*node) != FUNCTION_DECL) + warning (OPT_Wattributes, "%qE attribute ignored", name); + else + add_no_sanitize_value (*node, SANITIZE_ADDRESS); + + return NULL_TREE; +} + +/* Handle a "no_sanitize_thread" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_sanitize_thread_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + *no_add_attrs = true; + if (TREE_CODE (*node) != FUNCTION_DECL) + warning (OPT_Wattributes, "%qE attribute ignored", name); + else + add_no_sanitize_value (*node, SANITIZE_THREAD); + + return NULL_TREE; +} + + +/* Handle a "no_address_safety_analysis" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_address_safety_analysis_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + *no_add_attrs = true; + if (TREE_CODE (*node) != FUNCTION_DECL) + warning (OPT_Wattributes, "%qE attribute ignored", name); + else + add_no_sanitize_value (*node, SANITIZE_ADDRESS); + + return NULL_TREE; +} + +/* Handle a "no_sanitize_undefined" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_sanitize_undefined_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + *no_add_attrs = true; + if (TREE_CODE (*node) != FUNCTION_DECL) + warning (OPT_Wattributes, "%qE attribute ignored", name); + else + add_no_sanitize_value (*node, + SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT); + + return NULL_TREE; +} + +/* Handle a "no_sanitize_coverage" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_sanitize_coverage_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle an "asan odr indicator" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_asan_odr_indicator_attribute (tree *, tree, tree, int, bool *) +{ + return NULL_TREE; +} + +/* Handle a "stack_protect" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_stack_protect_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "no_stack_protector" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_stack_protector_function_attribute (tree *node, tree name, tree, + int, bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "noipa" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_noipa_attribute (tree *node, tree name, tree, int, bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "noinline" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_noinline_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL) + { + if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (*node))) + { + warning (OPT_Wattributes, "%qE attribute ignored due to conflict " + "with attribute %qs", name, "always_inline"); + *no_add_attrs = true; + } + else + DECL_UNINLINABLE (*node) = 1; + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "noclone" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_noclone_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "nocf_check" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_nocf_check_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_TYPE + && TREE_CODE (*node) != METHOD_TYPE) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + else if (!(flag_cf_protection & CF_BRANCH)) + { + warning (OPT_Wattributes, "%qE attribute ignored. Use " + "%<-fcf-protection%> option to enable it", + name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "no_icf" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_noicf_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + + +/* Handle a "always_inline" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_always_inline_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL) + { + if (lookup_attribute ("noinline", DECL_ATTRIBUTES (*node))) + { + warning (OPT_Wattributes, "%qE attribute ignored due to conflict " + "with %qs attribute", name, "noinline"); + *no_add_attrs = true; + } + else if (lookup_attribute ("target_clones", DECL_ATTRIBUTES (*node))) + { + warning (OPT_Wattributes, "%qE attribute ignored due to conflict " + "with %qs attribute", name, "target_clones"); + *no_add_attrs = true; + } + else + /* Set the attribute and mark it for disregarding inline + limits. */ + DECL_DISREGARD_INLINE_LIMITS (*node) = 1; + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "gnu_inline" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_gnu_inline_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (*node)) + { + /* Do nothing else, just set the attribute. We'll get at + it later with lookup_attribute. */ + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "leaf" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_leaf_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + if (!TREE_PUBLIC (*node)) + { + warning (OPT_Wattributes, "%qE attribute has no effect on unit local " + "functions", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle an "artificial" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_artificial_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (*node)) + { + /* Do nothing else, just set the attribute. We'll get at + it later with lookup_attribute. */ + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "flatten" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_flatten_attribute (tree *node, tree name, + tree args ATTRIBUTE_UNUSED, + int flags ATTRIBUTE_UNUSED, bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL) + /* Do nothing else, just set the attribute. We'll get at + it later with lookup_attribute. */ + ; + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "warning" or "error" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_error_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL + && TREE_CODE (TREE_VALUE (args)) == STRING_CST) + /* Do nothing else, just set the attribute. We'll get at + it later with lookup_attribute. */ + ; + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "used" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_used_attribute (tree *pnode, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree node = *pnode; + + if (TREE_CODE (node) == FUNCTION_DECL + || (VAR_P (node) && TREE_STATIC (node)) + || (TREE_CODE (node) == TYPE_DECL)) + { + TREE_USED (node) = 1; + DECL_PRESERVE_P (node) = 1; + if (VAR_P (node)) + DECL_READ_P (node) = 1; + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "unused" attribute; arguments as in + struct attribute_spec.handler. */ + +tree +handle_unused_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int flags, bool *no_add_attrs) +{ + if (DECL_P (*node)) + { + tree decl = *node; + + if (TREE_CODE (decl) == PARM_DECL + || VAR_OR_FUNCTION_DECL_P (decl) + || TREE_CODE (decl) == LABEL_DECL + || TREE_CODE (decl) == CONST_DECL + || TREE_CODE (decl) == FIELD_DECL + || TREE_CODE (decl) == TYPE_DECL) + { + TREE_USED (decl) = 1; + if (VAR_P (decl) || TREE_CODE (decl) == PARM_DECL) + DECL_READ_P (decl) = 1; + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + } + else + { + if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) + *node = build_variant_type_copy (*node); + TREE_USED (*node) = 1; + } + + return NULL_TREE; +} + +/* Handle a "retain" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_retain_attribute (tree *pnode, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree node = *pnode; + + if (SUPPORTS_SHF_GNU_RETAIN + && (TREE_CODE (node) == FUNCTION_DECL + || (VAR_P (node) && TREE_STATIC (node)))) + ; + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle an "uninitialized" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_uninitialized_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree decl = *node; + if (!VAR_P (decl)) + { + warning (OPT_Wattributes, "%qE attribute ignored because %qD " + "is not a variable", name, decl); + *no_add_attrs = true; + } + else if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)) + { + warning (OPT_Wattributes, "%qE attribute ignored because %qD " + "is not a local variable", name, decl); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "externally_visible" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_externally_visible_attribute (tree *pnode, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + tree node = *pnode; + + if (VAR_OR_FUNCTION_DECL_P (node)) + { + if ((!TREE_STATIC (node) && TREE_CODE (node) != FUNCTION_DECL + && !DECL_EXTERNAL (node)) || !TREE_PUBLIC (node)) + { + warning (OPT_Wattributes, + "%qE attribute have effect only on public objects", name); + *no_add_attrs = true; + } + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle the "no_reorder" attribute. Arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_reorder_attribute (tree *pnode, + tree name, + tree, + int, + bool *no_add_attrs) +{ + tree node = *pnode; + + if (!VAR_OR_FUNCTION_DECL_P (node) + && !(TREE_STATIC (node) || DECL_EXTERNAL (node))) + { + warning (OPT_Wattributes, + "%qE attribute only affects top level objects", + name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "const" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_const_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int flags, bool *no_add_attrs) +{ + tree type = TREE_TYPE (*node); + + /* See FIXME comment on noreturn in c_common_attribute_table. */ + if (TREE_CODE (*node) == FUNCTION_DECL) + TREE_READONLY (*node) = 1; + else if (TREE_CODE (type) == POINTER_TYPE + && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) + TREE_TYPE (*node) + = (build_qualified_type + (build_pointer_type + (build_type_variant (TREE_TYPE (type), 1, + TREE_THIS_VOLATILE (TREE_TYPE (type)))), + TYPE_QUALS (type))); + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + /* void __builtin_unreachable(void) is const. Accept other such + built-ins but warn on user-defined functions that return void. */ + if (!(flags & ATTR_FLAG_BUILT_IN) + && TREE_CODE (*node) == FUNCTION_DECL + && VOID_TYPE_P (TREE_TYPE (type))) + warning (OPT_Wattributes, "%qE attribute on function " + "returning %<void%>", name); + + return NULL_TREE; +} + +/* Handle a "scalar_storage_order" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_scalar_storage_order_attribute (tree *node, tree name, tree args, + int flags, bool *no_add_attrs) +{ + tree id = TREE_VALUE (args); + tree type; + + if (TREE_CODE (*node) == TYPE_DECL + && ! (flags & ATTR_FLAG_CXX11)) + node = &TREE_TYPE (*node); + type = *node; + + if (BYTES_BIG_ENDIAN != WORDS_BIG_ENDIAN) + { + error ("%qE attribute is not supported because endianness is not uniform", + name); + return NULL_TREE; + } + + if (RECORD_OR_UNION_TYPE_P (type) && !c_dialect_cxx ()) + { + bool reverse = false; + + if (TREE_CODE (id) == STRING_CST + && strcmp (TREE_STRING_POINTER (id), "big-endian") == 0) + reverse = !BYTES_BIG_ENDIAN; + else if (TREE_CODE (id) == STRING_CST + && strcmp (TREE_STRING_POINTER (id), "little-endian") == 0) + reverse = BYTES_BIG_ENDIAN; + else + { + error ("attribute %qE argument must be one of %qs or %qs", + name, "big-endian", "little-endian"); + return NULL_TREE; + } + + if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) + { + if (reverse) + /* A type variant isn't good enough, since we don't want a cast + to such a type to be removed as a no-op. */ + *node = type = build_duplicate_type (type); + } + + TYPE_REVERSE_STORAGE_ORDER (type) = reverse; + return NULL_TREE; + } + + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + return NULL_TREE; +} + +/* Handle a "transparent_union" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_transparent_union_attribute (tree *node, tree name, + tree ARG_UNUSED (args), int flags, + bool *no_add_attrs) +{ + tree type; + + *no_add_attrs = true; + + if (TREE_CODE (*node) == TYPE_DECL + && ! (flags & ATTR_FLAG_CXX11)) + node = &TREE_TYPE (*node); + type = *node; + + if (TREE_CODE (type) == UNION_TYPE) + { + /* Make sure that the first field will work for a transparent union. + If the type isn't complete yet, leave the check to the code in + finish_struct. */ + if (TYPE_SIZE (type)) + { + tree first = first_field (type); + if (first == NULL_TREE + || DECL_ARTIFICIAL (first) + || TYPE_MODE (type) != DECL_MODE (first)) + goto ignored; + } + + if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) + { + /* If the type isn't complete yet, setting the flag + on a variant wouldn't ever be checked. */ + if (!TYPE_SIZE (type)) + goto ignored; + + /* build_duplicate_type doesn't work for C++. */ + if (c_dialect_cxx ()) + goto ignored; + + /* A type variant isn't good enough, since we don't want a cast + to such a type to be removed as a no-op. */ + *node = type = build_duplicate_type (type); + } + + for (tree t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) + TYPE_TRANSPARENT_AGGR (t) = 1; + return NULL_TREE; + } + + ignored: + warning (OPT_Wattributes, "%qE attribute ignored", name); + return NULL_TREE; +} + +/* Subroutine of handle_{con,de}structor_attribute. Evaluate ARGS to + get the requested priority for a constructor or destructor, + possibly issuing diagnostics for invalid or reserved + priorities. */ + +static priority_type +get_priority (tree args, bool is_destructor) +{ + HOST_WIDE_INT pri; + tree arg; + + if (!args) + return DEFAULT_INIT_PRIORITY; + + if (!SUPPORTS_INIT_PRIORITY) + { + if (is_destructor) + error ("destructor priorities are not supported"); + else + error ("constructor priorities are not supported"); + return DEFAULT_INIT_PRIORITY; + } + + arg = TREE_VALUE (args); + if (TREE_CODE (arg) == IDENTIFIER_NODE) + goto invalid; + if (arg == error_mark_node) + return DEFAULT_INIT_PRIORITY; + arg = default_conversion (arg); + if (!tree_fits_shwi_p (arg) + || !INTEGRAL_TYPE_P (TREE_TYPE (arg))) + goto invalid; + + pri = tree_to_shwi (arg); + if (pri < 0 || pri > MAX_INIT_PRIORITY) + goto invalid; + + if (pri <= MAX_RESERVED_INIT_PRIORITY) + { + if (is_destructor) + warning (OPT_Wprio_ctor_dtor, + "destructor priorities from 0 to %d are reserved " + "for the implementation", + MAX_RESERVED_INIT_PRIORITY); + else + warning (OPT_Wprio_ctor_dtor, + "constructor priorities from 0 to %d are reserved " + "for the implementation", + MAX_RESERVED_INIT_PRIORITY); + } + return pri; + + invalid: + if (is_destructor) + error ("destructor priorities must be integers from 0 to %d inclusive", + MAX_INIT_PRIORITY); + else + error ("constructor priorities must be integers from 0 to %d inclusive", + MAX_INIT_PRIORITY); + return DEFAULT_INIT_PRIORITY; +} + +/* Handle a "constructor" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_constructor_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + tree decl = *node; + tree type = TREE_TYPE (decl); + + if (TREE_CODE (decl) == FUNCTION_DECL + && TREE_CODE (type) == FUNCTION_TYPE + && decl_function_context (decl) == 0) + { + priority_type priority; + DECL_STATIC_CONSTRUCTOR (decl) = 1; + priority = get_priority (args, /*is_destructor=*/false); + SET_DECL_INIT_PRIORITY (decl, priority); + TREE_USED (decl) = 1; + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "destructor" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_destructor_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + tree decl = *node; + tree type = TREE_TYPE (decl); + + if (TREE_CODE (decl) == FUNCTION_DECL + && TREE_CODE (type) == FUNCTION_TYPE + && decl_function_context (decl) == 0) + { + priority_type priority; + DECL_STATIC_DESTRUCTOR (decl) = 1; + priority = get_priority (args, /*is_destructor=*/true); + SET_DECL_FINI_PRIORITY (decl, priority); + TREE_USED (decl) = 1; + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Nonzero if the mode is a valid vector mode for this architecture. + This returns nonzero even if there is no hardware support for the + vector mode, but we can emulate with narrower modes. */ + +static bool +vector_mode_valid_p (machine_mode mode) +{ + enum mode_class mclass = GET_MODE_CLASS (mode); + + /* Doh! What's going on? */ + if (mclass != MODE_VECTOR_INT + && mclass != MODE_VECTOR_FLOAT + && mclass != MODE_VECTOR_FRACT + && mclass != MODE_VECTOR_UFRACT + && mclass != MODE_VECTOR_ACCUM + && mclass != MODE_VECTOR_UACCUM) + return false; + + /* Hardware support. Woo hoo! */ + if (targetm.vector_mode_supported_p (mode)) + return true; + + /* We should probably return 1 if requesting V4DI and we have no DI, + but we have V2DI, but this is probably very unlikely. */ + + /* If we have support for the inner mode, we can safely emulate it. + We may not have V2DI, but me can emulate with a pair of DIs. */ + return targetm.scalar_mode_supported_p (GET_MODE_INNER (mode)); +} + + +/* Handle a "mode" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_mode_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree type = *node; + tree ident = TREE_VALUE (args); + + *no_add_attrs = true; + + if (TREE_CODE (ident) != IDENTIFIER_NODE) + warning (OPT_Wattributes, "%qE attribute ignored", name); + else + { + int j; + const char *p = IDENTIFIER_POINTER (ident); + int len = strlen (p); + machine_mode mode = VOIDmode; + tree typefm; + bool valid_mode; + + if (len > 4 && p[0] == '_' && p[1] == '_' + && p[len - 1] == '_' && p[len - 2] == '_') + { + char *newp = (char *) alloca (len - 1); + + strcpy (newp, &p[2]); + newp[len - 4] = '\0'; + p = newp; + } + + /* Change this type to have a type with the specified mode. + First check for the special modes. */ + if (!strcmp (p, "byte")) + mode = byte_mode; + else if (!strcmp (p, "word")) + mode = word_mode; + else if (!strcmp (p, "pointer")) + mode = ptr_mode; + else if (!strcmp (p, "libgcc_cmp_return")) + mode = targetm.libgcc_cmp_return_mode (); + else if (!strcmp (p, "libgcc_shift_count")) + mode = targetm.libgcc_shift_count_mode (); + else if (!strcmp (p, "unwind_word")) + mode = targetm.unwind_word_mode (); + else + for (j = 0; j < NUM_MACHINE_MODES; j++) + if (!strcmp (p, GET_MODE_NAME (j))) + { + mode = (machine_mode) j; + break; + } + + if (mode == VOIDmode) + { + error ("unknown machine mode %qE", ident); + return NULL_TREE; + } + + /* Allow the target a chance to translate MODE into something supported. + See PR86324. */ + mode = targetm.translate_mode_attribute (mode); + + valid_mode = false; + switch (GET_MODE_CLASS (mode)) + { + case MODE_INT: + case MODE_PARTIAL_INT: + case MODE_FLOAT: + case MODE_DECIMAL_FLOAT: + case MODE_FRACT: + case MODE_UFRACT: + case MODE_ACCUM: + case MODE_UACCUM: + valid_mode + = targetm.scalar_mode_supported_p (as_a <scalar_mode> (mode)); + break; + + case MODE_COMPLEX_INT: + case MODE_COMPLEX_FLOAT: + valid_mode = targetm.scalar_mode_supported_p (GET_MODE_INNER (mode)); + break; + + case MODE_VECTOR_INT: + case MODE_VECTOR_FLOAT: + case MODE_VECTOR_FRACT: + case MODE_VECTOR_UFRACT: + case MODE_VECTOR_ACCUM: + case MODE_VECTOR_UACCUM: + warning (OPT_Wattributes, "specifying vector types with " + "%<__attribute__ ((mode))%> is deprecated"); + inform (input_location, + "use %<__attribute__ ((vector_size))%> instead"); + valid_mode = vector_mode_valid_p (mode); + break; + + default: + break; + } + if (!valid_mode) + { + error ("unable to emulate %qs", p); + return NULL_TREE; + } + + if (POINTER_TYPE_P (type)) + { + scalar_int_mode addr_mode; + addr_space_t as = TYPE_ADDR_SPACE (TREE_TYPE (type)); + tree (*fn)(tree, machine_mode, bool); + + if (!is_a <scalar_int_mode> (mode, &addr_mode) + || !targetm.addr_space.valid_pointer_mode (addr_mode, as)) + { + error ("invalid pointer mode %qs", p); + return NULL_TREE; + } + + if (TREE_CODE (type) == POINTER_TYPE) + fn = build_pointer_type_for_mode; + else + fn = build_reference_type_for_mode; + typefm = fn (TREE_TYPE (type), addr_mode, false); + } + else + { + /* For fixed-point modes, we need to test if the signness of type + and the machine mode are consistent. */ + if (ALL_FIXED_POINT_MODE_P (mode) + && TYPE_UNSIGNED (type) != UNSIGNED_FIXED_POINT_MODE_P (mode)) + { + error ("signedness of type and machine mode %qs don%'t match", p); + return NULL_TREE; + } + /* For fixed-point modes, we need to pass saturating info. */ + typefm = lang_hooks.types.type_for_mode (mode, + ALL_FIXED_POINT_MODE_P (mode) ? TYPE_SATURATING (type) + : TYPE_UNSIGNED (type)); + } + + if (typefm == NULL_TREE) + { + error ("no data type for mode %qs", p); + return NULL_TREE; + } + else if (TREE_CODE (type) == ENUMERAL_TYPE) + { + /* For enumeral types, copy the precision from the integer + type returned above. If not an INTEGER_TYPE, we can't use + this mode for this type. */ + if (TREE_CODE (typefm) != INTEGER_TYPE) + { + error ("cannot use mode %qs for enumerated types", p); + return NULL_TREE; + } + + if (flags & ATTR_FLAG_TYPE_IN_PLACE) + { + TYPE_PRECISION (type) = TYPE_PRECISION (typefm); + typefm = type; + } + else + { + /* We cannot build a type variant, as there's code that assumes + that TYPE_MAIN_VARIANT has the same mode. This includes the + debug generators. Instead, create a subrange type. This + results in all of the enumeral values being emitted only once + in the original, and the subtype gets them by reference. */ + if (TYPE_UNSIGNED (type)) + typefm = make_unsigned_type (TYPE_PRECISION (typefm)); + else + typefm = make_signed_type (TYPE_PRECISION (typefm)); + TREE_TYPE (typefm) = type; + } + *no_add_attrs = false; + } + else if (VECTOR_MODE_P (mode) + ? TREE_CODE (type) != TREE_CODE (TREE_TYPE (typefm)) + : TREE_CODE (type) != TREE_CODE (typefm)) + { + error ("mode %qs applied to inappropriate type", p); + return NULL_TREE; + } + + *node = build_qualified_type (typefm, TYPE_QUALS (type)); + } + + return NULL_TREE; +} + +/* Handle a "section" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_section_attribute (tree *node, tree name, tree args, + int flags, bool *no_add_attrs) +{ + tree decl = *node; + tree res = NULL_TREE; + tree argval = TREE_VALUE (args); + const char* new_section_name; + + if (!targetm_common.have_named_sections) + { + error_at (DECL_SOURCE_LOCATION (*node), + "section attributes are not supported for this target"); + goto fail; + } + + if (!VAR_OR_FUNCTION_DECL_P (decl)) + { + error ("section attribute not allowed for %q+D", *node); + goto fail; + } + + if (TREE_CODE (argval) != STRING_CST) + { + error ("section attribute argument not a string constant"); + goto fail; + } + + if (VAR_P (decl) + && current_function_decl != NULL_TREE + && !TREE_STATIC (decl)) + { + error_at (DECL_SOURCE_LOCATION (decl), + "section attribute cannot be specified for local variables"); + goto fail; + } + + new_section_name = TREE_STRING_POINTER (argval); + + /* The decl may have already been given a section attribute + from a previous declaration. Ensure they match. */ + if (const char* const old_section_name = DECL_SECTION_NAME (decl)) + if (strcmp (old_section_name, new_section_name) != 0) + { + error ("section of %q+D conflicts with previous declaration", + *node); + goto fail; + } + + if (VAR_P (decl) + && !targetm.have_tls && targetm.emutls.tmpl_section + && DECL_THREAD_LOCAL_P (decl)) + { + error ("section of %q+D cannot be overridden", *node); + goto fail; + } + + if (!validate_attr_arg (node, name, argval)) + goto fail; + + res = targetm.handle_generic_attribute (node, name, args, flags, + no_add_attrs); + + /* If the back end confirms the attribute can be added then continue onto + final processing. */ + if (!(*no_add_attrs)) + { + set_decl_section_name (decl, new_section_name); + return res; + } + +fail: + *no_add_attrs = true; + return res; +} + +/* Common codes shared by handle_warn_if_not_aligned_attribute and + handle_aligned_attribute. */ + +static tree +common_handle_aligned_attribute (tree *node, tree name, tree args, int flags, + bool *no_add_attrs, + bool warn_if_not_aligned_p) +{ + tree decl = NULL_TREE; + tree *type = NULL; + bool is_type = false; + tree align_expr; + + /* The last (already pushed) declaration with all validated attributes + merged in or the current about-to-be-pushed one if one hasn't been + yet. */ + tree last_decl = node[1] ? node[1] : *node; + + if (args) + { + align_expr = TREE_VALUE (args); + if (align_expr && TREE_CODE (align_expr) != IDENTIFIER_NODE + && TREE_CODE (align_expr) != FUNCTION_DECL) + align_expr = default_conversion (align_expr); + } + else + align_expr = size_int (ATTRIBUTE_ALIGNED_VALUE / BITS_PER_UNIT); + + if (DECL_P (*node)) + { + decl = *node; + type = &TREE_TYPE (decl); + is_type = TREE_CODE (*node) == TYPE_DECL; + } + else if (TYPE_P (*node)) + type = node, is_type = true; + + /* True to consider invalid alignments greater than MAX_OFILE_ALIGNMENT. */ + bool objfile = (TREE_CODE (*node) == FUNCTION_DECL + || (VAR_P (*node) && TREE_STATIC (*node))); + /* Log2 of specified alignment. */ + int pow2align = check_user_alignment (align_expr, objfile, + /* warn_zero = */ true); + if (pow2align == -1) + { + *no_add_attrs = true; + return NULL_TREE; + } + + /* The alignment in bits corresponding to the specified alignment. */ + unsigned bitalign = (1U << pow2align) * BITS_PER_UNIT; + + /* The alignment of the current declaration and that of the last + pushed declaration, determined on demand below. */ + unsigned curalign = 0; + unsigned lastalign = 0; + + /* True when SET_DECL_ALIGN() should be called for the decl when + *NO_ADD_ATTRS is false. */ + bool set_align = true; + if (is_type) + { + if ((flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) + /* OK, modify the type in place. */; + /* If we have a TYPE_DECL, then copy the type, so that we + don't accidentally modify a builtin type. See pushdecl. */ + else if (decl && TREE_TYPE (decl) != error_mark_node + && DECL_ORIGINAL_TYPE (decl) == NULL_TREE) + { + tree tt = TREE_TYPE (decl); + *type = build_variant_type_copy (*type); + DECL_ORIGINAL_TYPE (decl) = tt; + TYPE_NAME (*type) = decl; + TREE_USED (*type) = TREE_USED (decl); + TREE_TYPE (decl) = *type; + } + else + *type = build_variant_type_copy (*type); + + if (warn_if_not_aligned_p) + { + SET_TYPE_WARN_IF_NOT_ALIGN (*type, bitalign); + warn_if_not_aligned_p = false; + } + else + { + SET_TYPE_ALIGN (*type, bitalign); + TYPE_USER_ALIGN (*type) = 1; + } + } + else if (! VAR_OR_FUNCTION_DECL_P (decl) + && TREE_CODE (decl) != FIELD_DECL) + { + error ("alignment may not be specified for %q+D", decl); + *no_add_attrs = true; + } + else if (TREE_CODE (decl) == FUNCTION_DECL + && (((curalign = DECL_ALIGN (decl)) > bitalign) + | ((lastalign = DECL_ALIGN (last_decl)) > bitalign))) + { + /* Either a prior attribute on the same declaration or one + on a prior declaration of the same function specifies + stricter alignment than this attribute. */ + bool note = (lastalign > curalign + || (lastalign == curalign + && (DECL_USER_ALIGN (last_decl) + > DECL_USER_ALIGN (decl)))); + if (note) + curalign = lastalign; + + curalign /= BITS_PER_UNIT; + unsigned newalign = bitalign / BITS_PER_UNIT; + + auto_diagnostic_group d; + if ((DECL_USER_ALIGN (decl) + || DECL_USER_ALIGN (last_decl))) + { + if (warning (OPT_Wattributes, + "ignoring attribute %<%E (%u)%> because it conflicts " + "with attribute %<%E (%u)%>", + name, newalign, name, curalign) + && note) + inform (DECL_SOURCE_LOCATION (last_decl), + "previous declaration here"); + /* Only reject attempts to relax/override an alignment + explicitly specified previously and accept declarations + that appear to relax the implicit function alignment for + the target. Both increasing and increasing the alignment + set by -falign-functions setting is permitted. */ + *no_add_attrs = true; + } + else if (!warn_if_not_aligned_p) + { + /* Do not fail for attribute warn_if_not_aligned. Otherwise, + silently avoid applying the alignment to the declaration + because it's implicitly satisfied by the target. Apply + the attribute nevertheless so it can be retrieved by + __builtin_has_attribute. */ + set_align = false; + } + } + else if (DECL_USER_ALIGN (decl) + && DECL_ALIGN (decl) > bitalign) + /* C++-11 [dcl.align/4]: + + When multiple alignment-specifiers are specified for an + entity, the alignment requirement shall be set to the + strictest specified alignment. + + This formally comes from the c++11 specification but we are + doing it for the GNU attribute syntax as well. */ + *no_add_attrs = true; + else if (warn_if_not_aligned_p + && TREE_CODE (decl) == FIELD_DECL + && !DECL_C_BIT_FIELD (decl)) + { + SET_DECL_WARN_IF_NOT_ALIGN (decl, bitalign); + warn_if_not_aligned_p = false; + set_align = false; + } + + if (warn_if_not_aligned_p) + { + error ("%<warn_if_not_aligned%> may not be specified for %q+D", + decl); + *no_add_attrs = true; + } + else if (!is_type && !*no_add_attrs && set_align) + { + SET_DECL_ALIGN (decl, bitalign); + DECL_USER_ALIGN (decl) = 1; + } + + return NULL_TREE; +} + +/* Handle a "aligned" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_aligned_attribute (tree *node, tree name, tree args, + int flags, bool *no_add_attrs) +{ + return common_handle_aligned_attribute (node, name, args, flags, + no_add_attrs, false); +} + +/* Handle a "warn_if_not_aligned" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_warn_if_not_aligned_attribute (tree *node, tree name, + tree args, int flags, + bool *no_add_attrs) +{ + return common_handle_aligned_attribute (node, name, args, flags, + no_add_attrs, true); +} + +/* Handle a "weak" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_weak_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool * ARG_UNUSED (no_add_attrs)) +{ + if (TREE_CODE (*node) == FUNCTION_DECL + && DECL_DECLARED_INLINE_P (*node)) + { + warning (OPT_Wattributes, "inline function %q+D declared weak", *node); + *no_add_attrs = true; + } + else if (lookup_attribute ("ifunc", DECL_ATTRIBUTES (*node))) + { + error ("indirect function %q+D cannot be declared weak", *node); + *no_add_attrs = true; + return NULL_TREE; + } + else if (VAR_OR_FUNCTION_DECL_P (*node)) + declare_weak (*node); + else + warning (OPT_Wattributes, "%qE attribute ignored", name); + + return NULL_TREE; +} + +/* Handle a "noinit" or "persistent" attribute; arguments as in + struct attribute_spec.handler. + This generic handler is used for "special variable sections" that allow the + section name to be set using a dedicated attribute. Additional validation + is performed for the specific properties of the section corresponding to the + attribute. + The ".noinit" section *is not* loaded by the program loader, and is not + initialized by the runtime startup code. + The ".persistent" section *is* loaded by the program loader, but is not + initialized by the runtime startup code. */ +static tree +handle_special_var_sec_attribute (tree *node, tree name, tree args, + int flags, bool *no_add_attrs) +{ + tree decl = *node; + tree res = NULL_TREE; + + /* First perform generic validation common to "noinit" and "persistent" + attributes. */ + if (!targetm_common.have_named_sections) + { + error_at (DECL_SOURCE_LOCATION (decl), + "section attributes are not supported for this target"); + goto fail; + } + + if (!VAR_P (decl)) + { + warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wattributes, + "ignoring %qE attribute not set on a variable", + name); + goto fail; + } + + if (VAR_P (decl) + && current_function_decl != NULL_TREE + && !TREE_STATIC (decl)) + { + error_at (DECL_SOURCE_LOCATION (decl), + "%qE attribute cannot be specified for local variables", + name); + goto fail; + } + + if (VAR_P (decl) + && !targetm.have_tls && targetm.emutls.tmpl_section + && DECL_THREAD_LOCAL_P (decl)) + { + error ("section of %q+D cannot be overridden", decl); + goto fail; + } + + if (!targetm.have_switchable_bss_sections) + { + error ("%qE attribute is specific to ELF targets", name); + goto fail; + } + + if (TREE_READONLY (decl)) + { + warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wattributes, + "ignoring %qE attribute set on const variable", + name); + goto fail; + } + + /* Now validate noinit/persistent individually. */ + if (strcmp (IDENTIFIER_POINTER (name), "noinit") == 0) + { + if (DECL_INITIAL (decl)) + { + warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wattributes, + "ignoring %qE attribute set on initialized variable", + name); + goto fail; + } + /* If this var is thought to be common, then change this. "noinit" + variables must be placed in an explicit ".noinit" section. */ + DECL_COMMON (decl) = 0; + } + else if (strcmp (IDENTIFIER_POINTER (name), "persistent") == 0) + { + if (DECL_COMMON (decl) || DECL_INITIAL (decl) == NULL_TREE) + { + warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wattributes, + "ignoring %qE attribute set on uninitialized variable", + name); + goto fail; + } + } + else + gcc_unreachable (); + + res = targetm.handle_generic_attribute (node, name, args, flags, + no_add_attrs); + + /* If the back end confirms the attribute can be added then continue onto + final processing. */ + if (!(*no_add_attrs)) + return res; + +fail: + *no_add_attrs = true; + return res; +} + +/* Handle a "noplt" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_noplt_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool * ARG_UNUSED (no_add_attrs)) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, + "%qE attribute is only applicable on functions", name); + *no_add_attrs = true; + return NULL_TREE; + } + return NULL_TREE; +} + +/* Handle a "symver" attribute. */ + +static tree +handle_symver_attribute (tree *node, tree ARG_UNUSED (name), tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree symver; + const char *symver_str; + + if (TREE_CODE (*node) != FUNCTION_DECL && TREE_CODE (*node) != VAR_DECL) + { + warning (OPT_Wattributes, + "%<symver%> attribute only applies to functions and variables"); + *no_add_attrs = true; + return NULL_TREE; + } + + if (!decl_in_symtab_p (*node)) + { + warning (OPT_Wattributes, + "%<symver%> attribute is only applicable to symbols"); + *no_add_attrs = true; + return NULL_TREE; + } + + for (; args; args = TREE_CHAIN (args)) + { + symver = TREE_VALUE (args); + if (TREE_CODE (symver) != STRING_CST) + { + error ("%<symver%> attribute argument not a string constant"); + *no_add_attrs = true; + return NULL_TREE; + } + + symver_str = TREE_STRING_POINTER (symver); + + int ats = 0; + for (int n = 0; (int)n < TREE_STRING_LENGTH (symver); n++) + if (symver_str[n] == '@') + ats++; + + if (ats != 1 && ats != 2) + { + error ("symver attribute argument must have format %<name@nodename%>"); + error ("%<symver%> attribute argument %qs must contain one or two " + "%<@%>", symver_str); + *no_add_attrs = true; + return NULL_TREE; + } + } + + return NULL_TREE; +} + + +/* Handle an "alias" or "ifunc" attribute; arguments as in + struct attribute_spec.handler, except that IS_ALIAS tells us + whether this is an alias as opposed to ifunc attribute. */ + +static tree +handle_alias_ifunc_attribute (bool is_alias, tree *node, tree name, tree args, + bool *no_add_attrs) +{ + tree decl = *node; + + if (TREE_CODE (decl) != FUNCTION_DECL + && (!is_alias || !VAR_P (decl))) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + else if ((TREE_CODE (decl) == FUNCTION_DECL && DECL_INITIAL (decl)) + || (TREE_CODE (decl) != FUNCTION_DECL + && TREE_PUBLIC (decl) && !DECL_EXTERNAL (decl)) + /* A static variable declaration is always a tentative definition, + but the alias is a non-tentative definition which overrides. */ + || (TREE_CODE (decl) != FUNCTION_DECL + && ! TREE_PUBLIC (decl) && DECL_INITIAL (decl))) + { + error ("%q+D defined both normally and as %qE attribute", decl, name); + *no_add_attrs = true; + return NULL_TREE; + } + else if (!is_alias + && (lookup_attribute ("weak", DECL_ATTRIBUTES (decl)) + || lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)))) + { + error ("weak %q+D cannot be defined %qE", decl, name); + *no_add_attrs = true; + return NULL_TREE; + } + + /* Note that the very first time we process a nested declaration, + decl_function_context will not be set. Indeed, *would* never + be set except for the DECL_INITIAL/DECL_EXTERNAL frobbery that + we do below. After such frobbery, pushdecl would set the context. + In any case, this is never what we want. */ + else if (decl_function_context (decl) == 0 && current_function_decl == NULL) + { + tree id; + + id = TREE_VALUE (args); + if (TREE_CODE (id) != STRING_CST) + { + error ("attribute %qE argument not a string", name); + *no_add_attrs = true; + return NULL_TREE; + } + id = get_identifier (TREE_STRING_POINTER (id)); + /* This counts as a use of the object pointed to. */ + TREE_USED (id) = 1; + + if (TREE_CODE (decl) == FUNCTION_DECL) + DECL_INITIAL (decl) = error_mark_node; + else + TREE_STATIC (decl) = 1; + + if (!is_alias) + { + /* ifuncs are also aliases, so set that attribute too. */ + DECL_ATTRIBUTES (decl) + = tree_cons (get_identifier ("alias"), args, + DECL_ATTRIBUTES (decl)); + DECL_ATTRIBUTES (decl) = tree_cons (get_identifier ("ifunc"), + NULL, DECL_ATTRIBUTES (decl)); + } + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + if (decl_in_symtab_p (*node)) + { + struct symtab_node *n = symtab_node::get (decl); + if (n && n->refuse_visibility_changes) + error ("%+qD declared %qs after being used", + decl, is_alias ? "alias" : "ifunc"); + } + + + return NULL_TREE; +} + +/* Handle an "alias" or "ifunc" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_ifunc_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + return handle_alias_ifunc_attribute (false, node, name, args, no_add_attrs); +} + +/* Handle an "alias" or "ifunc" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_alias_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + return handle_alias_ifunc_attribute (true, node, name, args, no_add_attrs); +} + +/* Handle the "copy" attribute NAME by copying the set of attributes + from the symbol referenced by ARGS to the declaration of *NODE. */ + +static tree +handle_copy_attribute (tree *node, tree name, tree args, + int flags, bool *no_add_attrs) +{ + /* Do not apply the copy attribute itself. It serves no purpose + other than to copy other attributes. */ + *no_add_attrs = true; + + tree decl = *node; + + tree ref = TREE_VALUE (args); + if (ref == error_mark_node) + return NULL_TREE; + + if (TREE_CODE (ref) == STRING_CST) + { + /* Explicitly handle this case since using a string literal + as an argument is a likely mistake. */ + error_at (DECL_SOURCE_LOCATION (decl), + "%qE attribute argument cannot be a string", + name); + return NULL_TREE; + } + + if (CONSTANT_CLASS_P (ref) + && (INTEGRAL_TYPE_P (TREE_TYPE (ref)) + || FLOAT_TYPE_P (TREE_TYPE (ref)))) + { + /* Similar to the string case, since some function attributes + accept literal numbers as arguments (e.g., alloc_size or + nonnull) using one here is a likely mistake. */ + error_at (DECL_SOURCE_LOCATION (decl), + "%qE attribute argument cannot be a constant arithmetic " + "expression", + name); + return NULL_TREE; + } + + if (ref == node[1]) + { + /* Another possible mistake (but indirect self-references aren't + and diagnosed and shouldn't be). */ + if (warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wattributes, + "%qE attribute ignored on a redeclaration " + "of the referenced symbol", + name)) + inform (DECL_SOURCE_LOCATION (node[1]), + "previous declaration here"); + return NULL_TREE; + } + + /* Consider address-of expressions in the attribute argument + as requests to copy from the referenced entity. */ + if (TREE_CODE (ref) == ADDR_EXPR) + ref = TREE_OPERAND (ref, 0); + + do + { + /* Drill down into references to find the referenced decl. */ + tree_code refcode = TREE_CODE (ref); + if (refcode == ARRAY_REF + || refcode == INDIRECT_REF) + ref = TREE_OPERAND (ref, 0); + else if (refcode == COMPONENT_REF) + ref = TREE_OPERAND (ref, 1); + else + break; + } while (!DECL_P (ref)); + + /* For object pointer expressions, consider those to be requests + to copy from their type, such as in: + struct __attribute__ (copy ((struct T *)0)) U { ... }; + which copies type attributes from struct T to the declaration + of struct U. */ + if ((CONSTANT_CLASS_P (ref) || EXPR_P (ref)) + && POINTER_TYPE_P (TREE_TYPE (ref)) + && !FUNCTION_POINTER_TYPE_P (TREE_TYPE (ref))) + ref = TREE_TYPE (ref); + + tree reftype = TYPE_P (ref) ? ref : TREE_TYPE (ref); + + if (DECL_P (decl)) + { + if ((VAR_P (decl) + && (TREE_CODE (ref) == FUNCTION_DECL + || (EXPR_P (ref) + && POINTER_TYPE_P (reftype) + && FUNC_OR_METHOD_TYPE_P (TREE_TYPE (reftype))))) + || (TREE_CODE (decl) == FUNCTION_DECL + && (VAR_P (ref) + || (EXPR_P (ref) + && !FUNC_OR_METHOD_TYPE_P (reftype) + && (!POINTER_TYPE_P (reftype) + || !FUNC_OR_METHOD_TYPE_P (TREE_TYPE (reftype))))))) + { + /* It makes no sense to try to copy function attributes + to a variable, or variable attributes to a function. */ + if (warning (OPT_Wattributes, + "%qE attribute ignored on a declaration of " + "a different kind than referenced symbol", + name) + && DECL_P (ref)) + inform (DECL_SOURCE_LOCATION (ref), + "symbol %qD referenced by %qD declared here", ref, decl); + return NULL_TREE; + } + + tree attrs = NULL_TREE; + if (DECL_P (ref)) + attrs = DECL_ATTRIBUTES (ref); + else if (TYPE_P (ref)) + attrs = TYPE_ATTRIBUTES (ref); + + /* Copy decl attributes from REF to DECL. */ + for (tree at = attrs; at; at = TREE_CHAIN (at)) + { + /* Avoid copying attributes that affect a symbol linkage, + inlining, or visibility since those in all likelihood + only apply to the target. + FIXME: make it possible to specify which attributes to + copy or not to copy in the copy attribute itself. */ + tree atname = get_attribute_name (at); + if (is_attribute_p ("alias", atname) + || is_attribute_p ("always_inline", atname) + || is_attribute_p ("gnu_inline", atname) + || is_attribute_p ("ifunc", atname) + || is_attribute_p ("noinline", atname) + || is_attribute_p ("visibility", atname) + || is_attribute_p ("weak", atname) + || is_attribute_p ("weakref", atname) + || is_attribute_p ("target_clones", atname)) + continue; + + /* Attribute leaf only applies to extern functions. + Avoid copying it to static ones. */ + if (!TREE_PUBLIC (decl) + && is_attribute_p ("leaf", atname)) + continue; + + tree atargs = TREE_VALUE (at); + /* Create a copy of just the one attribute ar AT, including + its argumentsm and add it to DECL. */ + tree attr = tree_cons (atname, copy_list (atargs), NULL_TREE); + decl_attributes (node, attr, flags, EXPR_P (ref) ? NULL_TREE : ref); + } + + /* Proceed to copy type attributes below. */ + } + else if (!TYPE_P (decl)) + { + error_at (DECL_SOURCE_LOCATION (decl), + "%qE attribute must apply to a declaration", + name); + return NULL_TREE; + } + + /* A function declared with attribute nothrow has the attribute + attached to it, but a C++ throw() function does not. */ + if (TREE_NOTHROW (ref)) + TREE_NOTHROW (decl) = true; + + /* Similarly, a function declared with attribute noreturn has it + attached on to it, but a C11 _Noreturn function does not. */ + if (DECL_P (ref) + && TREE_THIS_VOLATILE (ref) + && FUNC_OR_METHOD_TYPE_P (reftype)) + TREE_THIS_VOLATILE (decl) = true; + + if (POINTER_TYPE_P (reftype)) + reftype = TREE_TYPE (reftype); + + if (!TYPE_P (reftype)) + return NULL_TREE; + + tree attrs = TYPE_ATTRIBUTES (reftype); + + /* Copy type attributes from REF to DECL. Pass in REF if it's a DECL + or a type but not if it's an expression. Set ATTR_FLAG_INTERNAL + since the attributes' arguments may be in their internal form. */ + for (tree at = attrs; at; at = TREE_CHAIN (at)) + decl_attributes (node, at, flags | ATTR_FLAG_INTERNAL, + EXPR_P (ref) ? NULL_TREE : ref); + + return NULL_TREE; +} + +/* Handle a "weakref" attribute; arguments as in struct + attribute_spec.handler. */ + +static tree +handle_weakref_attribute (tree *node, tree name, tree args, + int flags, bool *no_add_attrs) +{ + tree attr = NULL_TREE; + + /* We must ignore the attribute when it is associated with + local-scoped decls, since attribute alias is ignored and many + such symbols do not even have a DECL_WEAK field. */ + if (decl_function_context (*node) + || current_function_decl + || !VAR_OR_FUNCTION_DECL_P (*node)) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + return NULL_TREE; + } + + if (lookup_attribute ("ifunc", DECL_ATTRIBUTES (*node))) + { + error ("indirect function %q+D cannot be declared %qE", + *node, name); + *no_add_attrs = true; + return NULL_TREE; + } + + /* The idea here is that `weakref("name")' mutates into `weakref, + alias("name")', and weakref without arguments, in turn, + implicitly adds weak. */ + + if (args) + { + attr = tree_cons (get_identifier ("alias"), args, attr); + attr = tree_cons (get_identifier ("weakref"), NULL_TREE, attr); + + *no_add_attrs = true; + + decl_attributes (node, attr, flags); + } + else + { + if (lookup_attribute ("alias", DECL_ATTRIBUTES (*node))) + error_at (DECL_SOURCE_LOCATION (*node), + "%qE attribute must appear before %qs attribute", + name, "alias"); + + /* Can't call declare_weak because it wants this to be TREE_PUBLIC, + and that isn't supported; and because it wants to add it to + the list of weak decls, which isn't helpful. */ + DECL_WEAK (*node) = 1; + } + + if (decl_in_symtab_p (*node)) + { + struct symtab_node *n = symtab_node::get (*node); + if (n && n->refuse_visibility_changes) + error ("%+qD declared %qE after being used", *node, name); + } + + return NULL_TREE; +} + +/* Handle an "visibility" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_visibility_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), + bool *ARG_UNUSED (no_add_attrs)) +{ + tree decl = *node; + tree id = TREE_VALUE (args); + enum symbol_visibility vis; + + if (TYPE_P (*node)) + { + if (TREE_CODE (*node) == ENUMERAL_TYPE) + /* OK */; + else if (!RECORD_OR_UNION_TYPE_P (*node)) + { + warning (OPT_Wattributes, "%qE attribute ignored on non-class types", + name); + return NULL_TREE; + } + else if (TYPE_FIELDS (*node)) + { + error ("%qE attribute ignored because %qT is already defined", + name, *node); + return NULL_TREE; + } + } + else if (decl_function_context (decl) != 0 || !TREE_PUBLIC (decl)) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + return NULL_TREE; + } + + if (TREE_CODE (id) != STRING_CST) + { + error ("visibility argument not a string"); + return NULL_TREE; + } + + /* If this is a type, set the visibility on the type decl. */ + if (TYPE_P (decl)) + { + decl = TYPE_NAME (decl); + if (!decl) + return NULL_TREE; + if (TREE_CODE (decl) == IDENTIFIER_NODE) + { + warning (OPT_Wattributes, "%qE attribute ignored on types", + name); + return NULL_TREE; + } + } + + if (strcmp (TREE_STRING_POINTER (id), "default") == 0) + vis = VISIBILITY_DEFAULT; + else if (strcmp (TREE_STRING_POINTER (id), "internal") == 0) + vis = VISIBILITY_INTERNAL; + else if (strcmp (TREE_STRING_POINTER (id), "hidden") == 0) + vis = VISIBILITY_HIDDEN; + else if (strcmp (TREE_STRING_POINTER (id), "protected") == 0) + vis = VISIBILITY_PROTECTED; + else + { + error ("attribute %qE argument must be one of %qs, %qs, %qs, or %qs", + name, "default", "hidden", "protected", "internal"); + vis = VISIBILITY_DEFAULT; + } + + if (DECL_VISIBILITY_SPECIFIED (decl) + && vis != DECL_VISIBILITY (decl)) + { + tree attributes = (TYPE_P (*node) + ? TYPE_ATTRIBUTES (*node) + : DECL_ATTRIBUTES (decl)); + if (lookup_attribute ("visibility", attributes)) + error ("%qD redeclared with different visibility", decl); + else if (TARGET_DLLIMPORT_DECL_ATTRIBUTES + && lookup_attribute ("dllimport", attributes)) + error ("%qD was declared %qs which implies default visibility", + decl, "dllimport"); + else if (TARGET_DLLIMPORT_DECL_ATTRIBUTES + && lookup_attribute ("dllexport", attributes)) + error ("%qD was declared %qs which implies default visibility", + decl, "dllexport"); + } + + DECL_VISIBILITY (decl) = vis; + DECL_VISIBILITY_SPECIFIED (decl) = 1; + + /* Go ahead and attach the attribute to the node as well. This is needed + so we can determine whether we have VISIBILITY_DEFAULT because the + visibility was not specified, or because it was explicitly overridden + from the containing scope. */ + + return NULL_TREE; +} + +/* Handle an "tls_model" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_tls_model_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), + bool *ARG_UNUSED (no_add_attrs)) +{ + tree id; + tree decl = *node; + enum tls_model kind; + + if (!VAR_P (decl)) + { + warning (OPT_Wattributes, "%qE attribute ignored because %qD " + "is not a variable", + name, decl); + return NULL_TREE; + } + + if (!DECL_THREAD_LOCAL_P (decl)) + { + warning (OPT_Wattributes, "%qE attribute ignored because %qD does " + "not have thread storage duration", name, decl); + return NULL_TREE; + } + + kind = DECL_TLS_MODEL (decl); + id = TREE_VALUE (args); + if (TREE_CODE (id) != STRING_CST) + { + error ("%qE argument not a string", name); + return NULL_TREE; + } + + if (!strcmp (TREE_STRING_POINTER (id), "local-exec")) + kind = TLS_MODEL_LOCAL_EXEC; + else if (!strcmp (TREE_STRING_POINTER (id), "initial-exec")) + kind = TLS_MODEL_INITIAL_EXEC; + else if (!strcmp (TREE_STRING_POINTER (id), "local-dynamic")) + kind = optimize ? TLS_MODEL_LOCAL_DYNAMIC : TLS_MODEL_GLOBAL_DYNAMIC; + else if (!strcmp (TREE_STRING_POINTER (id), "global-dynamic")) + kind = TLS_MODEL_GLOBAL_DYNAMIC; + else + error ("%qE argument must be one of %qs, %qs, %qs, or %qs", + name, + "local-exec", "initial-exec", "local-dynamic", "global-dynamic"); + + set_decl_tls_model (decl, kind); + return NULL_TREE; +} + +/* Handle a "no_instrument_function" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_instrument_function_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + tree decl = *node; + + if (TREE_CODE (decl) != FUNCTION_DECL) + { + error_at (DECL_SOURCE_LOCATION (decl), + "%qE attribute applies only to functions", name); + *no_add_attrs = true; + } + else + DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (decl) = 1; + + return NULL_TREE; +} + +/* Handle a "no_profile_instrument_function" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_profile_instrument_function_attribute (tree *node, tree name, tree, + int, bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* If ALLOC_DECL and DEALLOC_DECL are a pair of user-defined functions, + if they are declared inline issue warnings and return null. Otherwise + create attribute noinline, install it in ALLOC_DECL, and return it. + Otherwise return null. */ + +static tree +maybe_add_noinline (tree name, tree alloc_decl, tree dealloc_decl, + bool *no_add_attrs) +{ + if (fndecl_built_in_p (alloc_decl) || fndecl_built_in_p (dealloc_decl)) + return NULL_TREE; + + /* When inlining (or optimization) is enabled and the allocator and + deallocator are not built-in functions, ignore the attribute on + functions declared inline since it could lead to false positives + when inlining one or the other call would wind up calling + a mismatched allocator or deallocator. */ + if ((optimize && DECL_DECLARED_INLINE_P (alloc_decl)) + || lookup_attribute ("always_inline", DECL_ATTRIBUTES (alloc_decl))) + { + warning (OPT_Wattributes, + "%<%E (%E)%> attribute ignored on functions " + "declared %qs", name, DECL_NAME (dealloc_decl), "inline"); + *no_add_attrs = true; + return NULL_TREE; + } + + if ((optimize && DECL_DECLARED_INLINE_P (dealloc_decl)) + || lookup_attribute ("always_inline", DECL_ATTRIBUTES (dealloc_decl))) + { + warning (OPT_Wattributes, + "%<%E (%E)%> attribute ignored with deallocation " + "functions declared %qs", + name, DECL_NAME (dealloc_decl), "inline"); + inform (DECL_SOURCE_LOCATION (dealloc_decl), + "deallocation function declared here" ); + *no_add_attrs = true; + return NULL_TREE; + } + + /* Disable inlining for non-standard deallocators to avoid false + positives due to mismatches between the inlined implementation + of one and not the other pair of functions. */ + tree attr = tree_cons (get_identifier ("noinline"), NULL_TREE, NULL_TREE); + decl_attributes (&alloc_decl, attr, 0); + return attr; +} + +/* Handle the "malloc" attribute. */ + +static tree +handle_malloc_attribute (tree *node, tree name, tree args, int flags, + bool *no_add_attrs) +{ + if (flags & ATTR_FLAG_INTERNAL) + /* Recursive call. */ + return NULL_TREE; + + tree fndecl = *node; + + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored; valid only " + "for functions", + name); + *no_add_attrs = true; + return NULL_TREE; + } + + tree rettype = TREE_TYPE (TREE_TYPE (*node)); + if (!POINTER_TYPE_P (rettype)) + { + warning (OPT_Wattributes, "%qE attribute ignored on functions " + "returning %qT; valid only for pointer return types", + name, rettype); + *no_add_attrs = true; + return NULL_TREE; + } + + if (!args) + { + /* Only the form of the attribute with no arguments declares + a function malloc-like. */ + DECL_IS_MALLOC (*node) = 1; + return NULL_TREE; + } + + tree dealloc = TREE_VALUE (args); + if (error_operand_p (dealloc)) + { + /* If the argument is in error it will have already been diagnosed. + Avoid issuing redundant errors here. */ + *no_add_attrs = true; + return NULL_TREE; + } + + STRIP_NOPS (dealloc); + if (TREE_CODE (dealloc) == ADDR_EXPR) + { + /* In C++ the argument may be wrapped in a cast to disambiguate + one of a number of overloads (such as operator delete). To + make things interesting, the cast looks different between + different C++ versions. Strip it and install the attribute + with the disambiguated function. */ + dealloc = TREE_OPERAND (dealloc, 0); + + *no_add_attrs = true; + tree attr = tree_cons (NULL_TREE, dealloc, TREE_CHAIN (args)); + attr = build_tree_list (name, attr); + return decl_attributes (node, attr, 0); + } + + if (TREE_CODE (dealloc) != FUNCTION_DECL) + { + if (TREE_CODE (dealloc) == OVERLOAD) + { + /* Handle specially the common case of specifying one of a number + of overloads, such as operator delete. */ + error ("%qE attribute argument 1 is ambiguous", name); + inform (input_location, + "use a cast to the expected type to disambiguate"); + *no_add_attrs = true; + return NULL_TREE; + } + + error ("%qE attribute argument 1 does not name a function", name); + if (DECL_P (dealloc)) + inform (DECL_SOURCE_LOCATION (dealloc), + "argument references a symbol declared here"); + *no_add_attrs = true; + return NULL_TREE; + } + + /* Mentioning the deallocation function qualifies as its use. */ + TREE_USED (dealloc) = 1; + + tree fntype = TREE_TYPE (dealloc); + tree argpos = TREE_CHAIN (args) ? TREE_VALUE (TREE_CHAIN (args)) : NULL_TREE; + if (!argpos) + { + tree argtypes = TYPE_ARG_TYPES (fntype); + if (!argtypes) + { + /* Reject functions without a prototype. */ + error ("%qE attribute argument 1 must take a pointer " + "type as its first argument", name); + inform (DECL_SOURCE_LOCATION (dealloc), + "referenced symbol declared here"); + *no_add_attrs = true; + return NULL_TREE; + } + + tree argtype = TREE_VALUE (argtypes); + if (TREE_CODE (argtype) != POINTER_TYPE) + { + /* Reject functions that don't take a pointer as their first + argument. */ + error ("%qE attribute argument 1 must take a pointer type " + "as its first argument; have %qT", name, argtype); + inform (DECL_SOURCE_LOCATION (dealloc), + "referenced symbol declared here"); + *no_add_attrs = true; + return NULL_TREE; + } + + /* Disable inlining for non-standard deallocators to avoid false + positives (or warn if either function is explicitly inline). */ + tree at_noinline = + maybe_add_noinline (name, fndecl, dealloc, no_add_attrs); + if (*no_add_attrs) + return NULL_TREE; + + /* Add attribute *dealloc to the deallocator function associating + it with this one. Ideally, the attribute would reference + the DECL of the deallocator but since that changes for each + redeclaration, use DECL_NAME instead. (DECL_ASSEMBLER_NAME + need not be set set this point and setting it here is too early. */ + tree attrs = build_tree_list (NULL_TREE, DECL_NAME (fndecl)); + attrs = tree_cons (get_identifier ("*dealloc"), attrs, at_noinline); + decl_attributes (&dealloc, attrs, 0); + return NULL_TREE; + } + + /* Validate the positional argument. */ + argpos = positional_argument (fntype, name, argpos, POINTER_TYPE); + if (!argpos) + { + *no_add_attrs = true; + return NULL_TREE; + } + + /* As above, disable inlining for non-standard deallocators to avoid + false positives (or warn). */ + tree at_noinline = + maybe_add_noinline (name, fndecl, dealloc, no_add_attrs); + if (*no_add_attrs) + return NULL_TREE; + + /* It's valid to declare the same function with multiple instances + of attribute malloc, each naming the same or different deallocator + functions, and each referencing either the same or a different + positional argument. */ + tree attrs = tree_cons (NULL_TREE, argpos, NULL_TREE); + attrs = tree_cons (NULL_TREE, DECL_NAME (fndecl), attrs); + attrs = tree_cons (get_identifier ("*dealloc"), attrs, at_noinline); + decl_attributes (&dealloc, attrs, 0); + return NULL_TREE; +} + +/* Handle the internal "*dealloc" attribute added for functions declared + with the one- and two-argument forms of attribute malloc. Add it + to *NODE unless it's already there with the same arguments. */ + +static tree +handle_dealloc_attribute (tree *node, tree name, tree args, int, + bool *no_add_attrs) +{ + tree fndecl = *node; + + tree attrs = DECL_ATTRIBUTES (fndecl); + if (!attrs) + return NULL_TREE; + + tree arg = TREE_VALUE (args); + args = TREE_CHAIN (args); + tree arg_pos = args ? TREE_VALUE (args) : integer_zero_node; + + gcc_checking_assert ((DECL_P (arg) + && fndecl_built_in_p (arg, BUILT_IN_NORMAL)) + || TREE_CODE (arg) == IDENTIFIER_NODE); + + const char* const namestr = IDENTIFIER_POINTER (name); + for (tree at = attrs; (at = lookup_attribute (namestr, at)); + at = TREE_CHAIN (at)) + { + tree alloc = TREE_VALUE (at); + if (!alloc) + continue; + + tree pos = TREE_CHAIN (alloc); + alloc = TREE_VALUE (alloc); + pos = pos ? TREE_VALUE (pos) : integer_zero_node; + gcc_checking_assert ((DECL_P (alloc) + && fndecl_built_in_p (alloc, BUILT_IN_NORMAL)) + || TREE_CODE (alloc) == IDENTIFIER_NODE); + + if (alloc == arg && tree_int_cst_equal (pos, arg_pos)) + { + /* The function already has the attribute either without any + arguments or with the same arguments as the attribute that's + being added. Return without adding another copy. */ + *no_add_attrs = true; + return NULL_TREE; + } + } + + return NULL_TREE; +} + +/* Handle the "alloc_size (argpos1 [, argpos2])" function type attribute. + *NODE is the type of the function the attribute is being applied to. */ + +static tree +handle_alloc_size_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree fntype = *node; + tree rettype = TREE_TYPE (fntype); + if (!POINTER_TYPE_P (rettype)) + { + warning (OPT_Wattributes, + "%qE attribute ignored on a function returning %qT", + name, rettype); + *no_add_attrs = true; + return NULL_TREE; + } + + tree newargs[2] = { NULL_TREE, NULL_TREE }; + for (int i = 1; args; ++i) + { + tree pos = TREE_VALUE (args); + /* NEXT is null when the attribute includes just one argument. + That's used to tell positional_argument to avoid mentioning + the argument number in diagnostics (since there's just one + mentioning it is unnecessary and coule be confusing). */ + tree next = TREE_CHAIN (args); + if (tree val = positional_argument (fntype, name, pos, INTEGER_TYPE, + next || i > 1 ? i : 0)) + { + TREE_VALUE (args) = val; + newargs[i - 1] = val; + } + else + { + *no_add_attrs = true; + return NULL_TREE; + } + + args = next; + } + + if (!validate_attr_args (node, name, newargs)) + *no_add_attrs = true; + + return NULL_TREE; +} + + +/* Handle an "alloc_align (argpos)" attribute. */ + +static tree +handle_alloc_align_attribute (tree *node, tree name, tree args, int, + bool *no_add_attrs) +{ + tree fntype = *node; + tree rettype = TREE_TYPE (fntype); + if (!POINTER_TYPE_P (rettype)) + { + warning (OPT_Wattributes, + "%qE attribute ignored on a function returning %qT", + name, rettype); + *no_add_attrs = true; + return NULL_TREE; + } + + if (tree val = positional_argument (*node, name, TREE_VALUE (args), + INTEGER_TYPE)) + if (validate_attr_arg (node, name, val)) + return NULL_TREE; + + *no_add_attrs = true; + return NULL_TREE; +} + +/* Handle a "assume_aligned" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_assume_aligned_attribute (tree *node, tree name, tree args, int, + bool *no_add_attrs) +{ + tree decl = *node; + tree rettype = TREE_TYPE (decl); + if (TREE_CODE (rettype) != POINTER_TYPE) + { + warning (OPT_Wattributes, + "%qE attribute ignored on a function returning %qT", + name, rettype); + *no_add_attrs = true; + return NULL_TREE; + } + + /* The alignment specified by the first argument. */ + tree align = NULL_TREE; + + for (; args; args = TREE_CHAIN (args)) + { + tree val = TREE_VALUE (args); + if (val && TREE_CODE (val) != IDENTIFIER_NODE + && TREE_CODE (val) != FUNCTION_DECL) + val = default_conversion (val); + + if (!tree_fits_shwi_p (val)) + { + warning (OPT_Wattributes, + "%qE attribute argument %E is not an integer constant", + name, val); + *no_add_attrs = true; + return NULL_TREE; + } + else if (tree_int_cst_sgn (val) < 0) + { + warning (OPT_Wattributes, + "%qE attribute argument %E is not positive", name, val); + *no_add_attrs = true; + return NULL_TREE; + } + + if (!align) + { + /* Validate and save the alignment. */ + if (!integer_pow2p (val)) + { + warning (OPT_Wattributes, + "%qE attribute argument %E is not a power of 2", + name, val); + *no_add_attrs = true; + return NULL_TREE; + } + + align = val; + } + else if (tree_int_cst_le (align, val)) + { + /* The misalignment specified by the second argument + must be non-negative and less than the alignment. */ + warning (OPT_Wattributes, + "%qE attribute argument %E is not in the range [0, %wu]", + name, val, tree_to_uhwi (align) - 1); + *no_add_attrs = true; + return NULL_TREE; + } + } + return NULL_TREE; +} + +/* Handle the internal-only "arg spec" attribute. */ + +static tree +handle_argspec_attribute (tree *, tree, tree args, int, bool *) +{ + /* Verify the attribute has one or two arguments and their kind. */ + gcc_assert (args && TREE_CODE (TREE_VALUE (args)) == STRING_CST); + for (tree next = TREE_CHAIN (args); next; next = TREE_CHAIN (next)) + { + tree val = TREE_VALUE (next); + gcc_assert (DECL_P (val) || EXPR_P (val)); + } + return NULL_TREE; +} + +/* Handle the internal-only "fn spec" attribute. */ + +static tree +handle_fnspec_attribute (tree *node ATTRIBUTE_UNUSED, tree ARG_UNUSED (name), + tree args, int ARG_UNUSED (flags), + bool *no_add_attrs ATTRIBUTE_UNUSED) +{ + gcc_assert (args + && TREE_CODE (TREE_VALUE (args)) == STRING_CST + && !TREE_CHAIN (args)); + return NULL_TREE; +} + +/* Handle a "warn_unused" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_warn_unused_attribute (tree *node, tree name, + tree args ATTRIBUTE_UNUSED, + int flags ATTRIBUTE_UNUSED, bool *no_add_attrs) +{ + if (TYPE_P (*node)) + /* Do nothing else, just set the attribute. We'll get at + it later with lookup_attribute. */ + ; + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle an "omp declare simd" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_omp_declare_simd_attribute (tree *, tree, tree, int, bool *) +{ + return NULL_TREE; +} + +/* Handle an "omp declare variant {base,variant}" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_omp_declare_variant_attribute (tree *, tree, tree, int, bool *) +{ + return NULL_TREE; +} + +/* Handle a "simd" attribute. */ + +static tree +handle_simd_attribute (tree *node, tree name, tree args, int, bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL) + { + tree t = get_identifier ("omp declare simd"); + tree attr = NULL_TREE; + if (args) + { + tree id = TREE_VALUE (args); + + if (TREE_CODE (id) != STRING_CST) + { + error ("attribute %qE argument not a string", name); + *no_add_attrs = true; + return NULL_TREE; + } + + if (strcmp (TREE_STRING_POINTER (id), "notinbranch") == 0) + attr = build_omp_clause (DECL_SOURCE_LOCATION (*node), + OMP_CLAUSE_NOTINBRANCH); + else if (strcmp (TREE_STRING_POINTER (id), "inbranch") == 0) + attr = build_omp_clause (DECL_SOURCE_LOCATION (*node), + OMP_CLAUSE_INBRANCH); + else + { + error ("only %<inbranch%> and %<notinbranch%> flags are " + "allowed for %<__simd__%> attribute"); + *no_add_attrs = true; + return NULL_TREE; + } + } + + DECL_ATTRIBUTES (*node) + = tree_cons (t, build_tree_list (NULL_TREE, attr), + DECL_ATTRIBUTES (*node)); + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle an "omp declare target" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_omp_declare_target_attribute (tree *, tree, tree, int, bool *) +{ + return NULL_TREE; +} + +/* Handle an "non overlapping" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_non_overlapping_attribute (tree *, tree, tree, int, bool *) +{ + return NULL_TREE; +} + +/* Handle a "returns_twice" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_returns_twice_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL) + DECL_IS_RETURNS_TWICE (*node) = 1; + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "no_limit_stack" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_no_limit_stack_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + tree decl = *node; + + if (TREE_CODE (decl) != FUNCTION_DECL) + { + error_at (DECL_SOURCE_LOCATION (decl), + "%qE attribute applies only to functions", name); + *no_add_attrs = true; + } + else if (DECL_INITIAL (decl)) + { + error_at (DECL_SOURCE_LOCATION (decl), + "cannot set %qE attribute after definition", name); + *no_add_attrs = true; + } + else + DECL_NO_LIMIT_STACK (decl) = 1; + + return NULL_TREE; +} + +/* Handle a "pure" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_pure_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL) + { + tree type = TREE_TYPE (*node); + if (VOID_TYPE_P (TREE_TYPE (type))) + warning (OPT_Wattributes, "%qE attribute on function " + "returning %<void%>", name); + + DECL_PURE_P (*node) = 1; + /* ??? TODO: Support types. */ + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Digest an attribute list destined for a transactional memory statement. + ALLOWED is the set of attributes that are allowed for this statement; + return the attribute we parsed. Multiple attributes are never allowed. */ + +int +parse_tm_stmt_attr (tree attrs, int allowed) +{ + tree a_seen = NULL; + int m_seen = 0; + + for ( ; attrs ; attrs = TREE_CHAIN (attrs)) + { + tree a = get_attribute_name (attrs); + tree ns = get_attribute_namespace (attrs); + int m = 0; + + if (is_attribute_p ("outer", a) + && (ns == NULL_TREE || strcmp (IDENTIFIER_POINTER (ns), "gnu") == 0)) + m = TM_STMT_ATTR_OUTER; + + if ((m & allowed) == 0) + { + warning (OPT_Wattributes, "%qE attribute directive ignored", a); + continue; + } + + if (m_seen == 0) + { + a_seen = a; + m_seen = m; + } + else if (m_seen == m) + warning (OPT_Wattributes, "%qE attribute duplicated", a); + else + warning (OPT_Wattributes, "%qE attribute follows %qE", a, a_seen); + } + + return m_seen; +} + +/* Transform a TM attribute name into a maskable integer and back. + Note that NULL (i.e. no attribute) is mapped to UNKNOWN, corresponding + to how the lack of an attribute is treated. */ + +int +tm_attr_to_mask (tree attr) +{ + if (attr == NULL) + return 0; + if (is_attribute_p ("transaction_safe", attr)) + return TM_ATTR_SAFE; + if (is_attribute_p ("transaction_callable", attr)) + return TM_ATTR_CALLABLE; + if (is_attribute_p ("transaction_pure", attr)) + return TM_ATTR_PURE; + if (is_attribute_p ("transaction_unsafe", attr)) + return TM_ATTR_IRREVOCABLE; + if (is_attribute_p ("transaction_may_cancel_outer", attr)) + return TM_ATTR_MAY_CANCEL_OUTER; + return 0; +} + +tree +tm_mask_to_attr (int mask) +{ + const char *str; + switch (mask) + { + case TM_ATTR_SAFE: + str = "transaction_safe"; + break; + case TM_ATTR_CALLABLE: + str = "transaction_callable"; + break; + case TM_ATTR_PURE: + str = "transaction_pure"; + break; + case TM_ATTR_IRREVOCABLE: + str = "transaction_unsafe"; + break; + case TM_ATTR_MAY_CANCEL_OUTER: + str = "transaction_may_cancel_outer"; + break; + default: + gcc_unreachable (); + } + return get_identifier (str); +} + +/* Return the first TM attribute seen in LIST. */ + +tree +find_tm_attribute (tree list) +{ + for (; list ; list = TREE_CHAIN (list)) + { + tree name = get_attribute_name (list); + if (tm_attr_to_mask (name) != 0) + return name; + } + return NULL_TREE; +} + +/* Handle the TM attributes; arguments as in struct attribute_spec.handler. + Here we accept only function types, and verify that none of the other + function TM attributes are also applied. */ +/* ??? We need to accept class types for C++, but not C. This greatly + complicates this function, since we can no longer rely on the extra + processing given by function_type_required. */ + +static tree +handle_tm_attribute (tree *node, tree name, tree args, + int flags, bool *no_add_attrs) +{ + /* Only one path adds the attribute; others don't. */ + *no_add_attrs = true; + + switch (TREE_CODE (*node)) + { + case RECORD_TYPE: + case UNION_TYPE: + /* Only tm_callable and tm_safe apply to classes. */ + if (tm_attr_to_mask (name) & ~(TM_ATTR_SAFE | TM_ATTR_CALLABLE)) + goto ignored; + /* FALLTHRU */ + + case FUNCTION_TYPE: + case METHOD_TYPE: + { + tree old_name = find_tm_attribute (TYPE_ATTRIBUTES (*node)); + if (old_name == name) + ; + else if (old_name != NULL_TREE) + error ("type was previously declared %qE", old_name); + else + *no_add_attrs = false; + } + break; + + case FUNCTION_DECL: + { + /* transaction_safe_dynamic goes on the FUNCTION_DECL, but we also + want to set transaction_safe on the type. */ + gcc_assert (is_attribute_p ("transaction_safe_dynamic", name)); + if (!TYPE_P (DECL_CONTEXT (*node))) + error_at (DECL_SOURCE_LOCATION (*node), + "%<transaction_safe_dynamic%> may only be specified for " + "a virtual function"); + *no_add_attrs = false; + decl_attributes (&TREE_TYPE (*node), + build_tree_list (get_identifier ("transaction_safe"), + NULL_TREE), + 0); + break; + } + + case POINTER_TYPE: + { + enum tree_code subcode = TREE_CODE (TREE_TYPE (*node)); + if (subcode == FUNCTION_TYPE || subcode == METHOD_TYPE) + { + tree fn_tmp = TREE_TYPE (*node); + decl_attributes (&fn_tmp, tree_cons (name, args, NULL), 0); + *node = build_pointer_type (fn_tmp); + break; + } + } + /* FALLTHRU */ + + default: + /* If a function is next, pass it on to be tried next. */ + if (flags & (int) ATTR_FLAG_FUNCTION_NEXT) + return tree_cons (name, args, NULL); + + ignored: + warning (OPT_Wattributes, "%qE attribute ignored", name); + break; + } + + return NULL_TREE; +} + +/* Handle the TM_WRAP attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_tm_wrap_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree decl = *node; + + /* We don't need the attribute even on success, since we + record the entry in an external table. */ + *no_add_attrs = true; + + if (TREE_CODE (decl) != FUNCTION_DECL) + warning (OPT_Wattributes, "%qE attribute ignored", name); + else + { + tree wrap_decl = TREE_VALUE (args); + if (error_operand_p (wrap_decl)) + ; + else if (TREE_CODE (wrap_decl) != IDENTIFIER_NODE + && !VAR_OR_FUNCTION_DECL_P (wrap_decl)) + error ("%qE argument not an identifier", name); + else + { + if (TREE_CODE (wrap_decl) == IDENTIFIER_NODE) + wrap_decl = lookup_name (wrap_decl); + if (wrap_decl && TREE_CODE (wrap_decl) == FUNCTION_DECL) + { + if (lang_hooks.types_compatible_p (TREE_TYPE (decl), + TREE_TYPE (wrap_decl))) + record_tm_replacement (wrap_decl, decl); + else + error ("%qD is not compatible with %qD", wrap_decl, decl); + } + else + error ("%qE argument is not a function", name); + } + } + + return NULL_TREE; +} + +/* Ignore the given attribute. Used when this attribute may be usefully + overridden by the target, but is not used generically. */ + +static tree +ignore_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name), + tree ARG_UNUSED (args), int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + *no_add_attrs = true; + return NULL_TREE; +} + +/* Handle a "no vops" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_novops_attribute (tree *node, tree ARG_UNUSED (name), + tree ARG_UNUSED (args), int ARG_UNUSED (flags), + bool *ARG_UNUSED (no_add_attrs)) +{ + gcc_assert (TREE_CODE (*node) == FUNCTION_DECL); + DECL_IS_NOVOPS (*node) = 1; + return NULL_TREE; +} + +/* Handle a "deprecated" attribute; arguments as in + struct attribute_spec.handler. */ + +tree +handle_deprecated_attribute (tree *node, tree name, + tree args, int flags, + bool *no_add_attrs) +{ + tree type = NULL_TREE; + int warn = 0; + tree what = NULL_TREE; + + if (!args) + *no_add_attrs = true; + else if (TREE_CODE (TREE_VALUE (args)) != STRING_CST) + { + error ("deprecated message is not a string"); + *no_add_attrs = true; + } + + if (DECL_P (*node)) + { + tree decl = *node; + type = TREE_TYPE (decl); + + if (TREE_CODE (decl) == TYPE_DECL + || TREE_CODE (decl) == PARM_DECL + || VAR_OR_FUNCTION_DECL_P (decl) + || TREE_CODE (decl) == FIELD_DECL + || TREE_CODE (decl) == CONST_DECL + || objc_method_decl (TREE_CODE (decl))) + TREE_DEPRECATED (decl) = 1; + else + warn = 1; + } + else if (TYPE_P (*node)) + { + if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) + *node = build_variant_type_copy (*node); + TREE_DEPRECATED (*node) = 1; + type = *node; + } + else + warn = 1; + + if (warn) + { + *no_add_attrs = true; + if (type && TYPE_NAME (type)) + { + if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) + what = TYPE_NAME (*node); + else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL + && DECL_NAME (TYPE_NAME (type))) + what = DECL_NAME (TYPE_NAME (type)); + } + if (what) + warning (OPT_Wattributes, "%qE attribute ignored for %qE", name, what); + else + warning (OPT_Wattributes, "%qE attribute ignored", name); + } + + return NULL_TREE; +} + +/* Handle a "unavailable" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_unavailable_attribute (tree *node, tree name, + tree args, int flags, + bool *no_add_attrs) +{ + tree type = NULL_TREE; + int warn = 0; + tree what = NULL_TREE; + + if (!args) + *no_add_attrs = true; + else if (TREE_CODE (TREE_VALUE (args)) != STRING_CST) + { + error ("the message attached to %<unavailable%> is not a string"); + *no_add_attrs = true; + } + + if (DECL_P (*node)) + { + tree decl = *node; + type = TREE_TYPE (decl); + + if (TREE_CODE (decl) == TYPE_DECL + || TREE_CODE (decl) == PARM_DECL + || VAR_OR_FUNCTION_DECL_P (decl) + || TREE_CODE (decl) == FIELD_DECL + || TREE_CODE (decl) == CONST_DECL + || objc_method_decl (TREE_CODE (decl))) + TREE_UNAVAILABLE (decl) = 1; + else + warn = 1; + } + else if (TYPE_P (*node)) + { + if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) + *node = build_variant_type_copy (*node); + TREE_UNAVAILABLE (*node) = 1; + type = *node; + } + else + warn = 1; + + if (warn) + { + *no_add_attrs = true; + if (type && TYPE_NAME (type)) + { + if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) + what = TYPE_NAME (*node); + else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL + && DECL_NAME (TYPE_NAME (type))) + what = DECL_NAME (TYPE_NAME (type)); + } + if (what) + warning (OPT_Wattributes, "%qE attribute ignored for %qE", name, what); + else + warning (OPT_Wattributes, "%qE attribute ignored", name); + } + + return NULL_TREE; +} + +/* Return the "base" type from TYPE that is suitable to apply attribute + vector_size to by stripping arrays, function types, etc. */ +static tree +type_for_vector_size (tree type) +{ + /* We need to provide for vector pointers, vector arrays, and + functions returning vectors. For example: + + __attribute__((vector_size(16))) short *foo; + + In this case, the mode is SI, but the type being modified is + HI, so we need to look further. */ + + while (POINTER_TYPE_P (type) + || TREE_CODE (type) == FUNCTION_TYPE + || TREE_CODE (type) == METHOD_TYPE + || TREE_CODE (type) == ARRAY_TYPE + || TREE_CODE (type) == OFFSET_TYPE) + type = TREE_TYPE (type); + + return type; +} + +/* Given TYPE, return the base type to which the vector_size attribute + ATNAME with ARGS, when non-null, can be applied, if one exists. + On success and when both ARGS and PTRNUNITS are non-null, set + *PTRNUNINTS to the number of vector units. When PTRNUNITS is not + null, issue a warning when the attribute argument is not constant + and an error if there is no such type. Otherwise issue a warning + in the latter case and return null. */ + +static tree +type_valid_for_vector_size (tree type, tree atname, tree args, + unsigned HOST_WIDE_INT *ptrnunits) +{ + bool error_p = ptrnunits != NULL; + + /* Get the mode of the type being modified. */ + machine_mode orig_mode = TYPE_MODE (type); + + if ((!INTEGRAL_TYPE_P (type) + && !SCALAR_FLOAT_TYPE_P (type) + && !FIXED_POINT_TYPE_P (type)) + || (!SCALAR_FLOAT_MODE_P (orig_mode) + && GET_MODE_CLASS (orig_mode) != MODE_INT + && !ALL_SCALAR_FIXED_POINT_MODE_P (orig_mode)) + || !tree_fits_uhwi_p (TYPE_SIZE_UNIT (type)) + || TREE_CODE (type) == BOOLEAN_TYPE) + { + if (error_p) + error ("invalid vector type for attribute %qE", atname); + else + warning (OPT_Wattributes, "invalid vector type for attribute %qE", + atname); + return NULL_TREE; + } + + /* When no argument has been provided this is just a request to validate + the type above. Return TYPE to indicate success. */ + if (!args) + return type; + + tree size = TREE_VALUE (args); + /* Erroneous arguments have already been diagnosed. */ + if (size == error_mark_node) + return NULL_TREE; + + if (size && TREE_CODE (size) != IDENTIFIER_NODE + && TREE_CODE (size) != FUNCTION_DECL) + size = default_conversion (size); + + if (TREE_CODE (size) != INTEGER_CST) + { + if (error_p) + error ("%qE attribute argument value %qE is not an integer constant", + atname, size); + else + warning (OPT_Wattributes, + "%qE attribute argument value %qE is not an integer constant", + atname, size); + return NULL_TREE; + } + + if (!TYPE_UNSIGNED (TREE_TYPE (size)) + && tree_int_cst_sgn (size) < 0) + { + if (error_p) + error ("%qE attribute argument value %qE is negative", + atname, size); + else + warning (OPT_Wattributes, + "%qE attribute argument value %qE is negative", + atname, size); + return NULL_TREE; + } + + /* The attribute argument value is constrained by the maximum bit + alignment representable in unsigned int on the host. */ + unsigned HOST_WIDE_INT vecsize; + unsigned HOST_WIDE_INT maxsize = tree_to_uhwi (max_object_size ()); + if (!tree_fits_uhwi_p (size) + || (vecsize = tree_to_uhwi (size)) > maxsize) + { + if (error_p) + error ("%qE attribute argument value %qE exceeds %wu", + atname, size, maxsize); + else + warning (OPT_Wattributes, + "%qE attribute argument value %qE exceeds %wu", + atname, size, maxsize); + return NULL_TREE; + } + + if (vecsize % tree_to_uhwi (TYPE_SIZE_UNIT (type))) + { + if (error_p) + error ("vector size not an integral multiple of component size"); + return NULL_TREE; + } + + if (vecsize == 0) + { + error ("zero vector size"); + return NULL; + } + + /* Calculate how many units fit in the vector. */ + unsigned HOST_WIDE_INT nunits = vecsize / tree_to_uhwi (TYPE_SIZE_UNIT (type)); + if (nunits & (nunits - 1)) + { + if (error_p) + error ("number of vector components %wu not a power of two", nunits); + else + warning (OPT_Wattributes, + "number of vector components %wu not a power of two", nunits); + return NULL_TREE; + } + + if (nunits >= (unsigned HOST_WIDE_INT)INT_MAX) + { + if (error_p) + error ("number of vector components %wu exceeds %d", + nunits, INT_MAX - 1); + else + warning (OPT_Wattributes, + "number of vector components %wu exceeds %d", + nunits, INT_MAX - 1); + return NULL_TREE; + } + + if (ptrnunits) + *ptrnunits = nunits; + + return type; +} + +/* Handle a "vector_size" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_vector_size_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + *no_add_attrs = true; + + /* Determine the "base" type to apply the attribute to. */ + tree type = type_for_vector_size (*node); + + /* Get the vector size (in bytes) and let the function compute + the number of vector units. */ + unsigned HOST_WIDE_INT nunits; + type = type_valid_for_vector_size (type, name, args, &nunits); + if (!type) + return NULL_TREE; + + gcc_checking_assert (args != NULL); + + tree new_type = build_vector_type (type, nunits); + + /* Build back pointers if needed. */ + *node = lang_hooks.types.reconstruct_complex_type (*node, new_type); + + return NULL_TREE; +} + +/* Handle the "nonnull" attribute. */ + +static tree +handle_nonnull_attribute (tree *node, tree name, + tree args, int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + tree type = *node; + + /* If no arguments are specified, all pointer arguments should be + non-null. Verify a full prototype is given so that the arguments + will have the correct types when we actually check them later. + Avoid diagnosing type-generic built-ins since those have no + prototype. */ + if (!args) + { + if (!prototype_p (type) + && (!TYPE_ATTRIBUTES (type) + || !lookup_attribute ("type generic", TYPE_ATTRIBUTES (type)))) + { + error ("%qE attribute without arguments on a non-prototype", + name); + *no_add_attrs = true; + } + return NULL_TREE; + } + + for (int i = 1; args; ++i) + { + tree pos = TREE_VALUE (args); + /* NEXT is null when the attribute includes just one argument. + That's used to tell positional_argument to avoid mentioning + the argument number in diagnostics (since there's just one + mentioning it is unnecessary and coule be confusing). */ + tree next = TREE_CHAIN (args); + if (tree val = positional_argument (type, name, pos, POINTER_TYPE, + next || i > 1 ? i : 0)) + TREE_VALUE (args) = val; + else + { + *no_add_attrs = true; + break; + } + args = next; + } + + return NULL_TREE; +} + +/* Handle the "nonstring" variable attribute. */ + +static tree +handle_nonstring_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + gcc_assert (!args); + tree_code code = TREE_CODE (*node); + + if (VAR_P (*node) + || code == FIELD_DECL + || code == PARM_DECL) + { + tree type = TREE_TYPE (*node); + + if (POINTER_TYPE_P (type) || TREE_CODE (type) == ARRAY_TYPE) + { + /* Accept the attribute on arrays and pointers to all three + narrow character types. */ + tree eltype = TREE_TYPE (type); + eltype = TYPE_MAIN_VARIANT (eltype); + if (eltype == char_type_node + || eltype == signed_char_type_node + || eltype == unsigned_char_type_node) + return NULL_TREE; + } + + warning (OPT_Wattributes, + "%qE attribute ignored on objects of type %qT", + name, type); + *no_add_attrs = true; + return NULL_TREE; + } + + if (code == FUNCTION_DECL) + warning (OPT_Wattributes, + "%qE attribute does not apply to functions", name); + else if (code == TYPE_DECL) + warning (OPT_Wattributes, + "%qE attribute does not apply to types", name); + else + warning (OPT_Wattributes, "%qE attribute ignored", name); + + *no_add_attrs = true; + return NULL_TREE; +} + +/* Given a function type FUNCTYPE, returns the type of the parameter + ARGNO or null if ARGNO exceeds the number of parameters. On failure + set *NARGS to the number of function parameters. */ + +static tree +get_argument_type (tree functype, unsigned argno, unsigned *nargs) +{ + function_args_iterator iter; + function_args_iter_init (&iter, functype); + + unsigned count = 0; + + for ( ; iter.next; ++count, function_args_iter_next (&iter)) + { + if (count + 1 == argno) + { + tree argtype = function_args_iter_cond (&iter); + if (VOID_TYPE_P (argtype)) + break; + if (argtype != error_mark_node) + return argtype; + } + } + + *nargs = count; + return NULL_TREE; +} + +/* Given a function FNDECL return the function argument at the zero- + based position ARGNO or null if it can't be found. */ + +static tree +get_argument (tree fndecl, unsigned argno) +{ + if (!DECL_P (fndecl)) + return NULL_TREE; + + unsigned i = 0; + for (tree arg = DECL_ARGUMENTS (fndecl); arg; arg = TREE_CHAIN (arg)) + if (i++ == argno) + return arg; + + return NULL_TREE; +} + +/* Attempt to append attribute access specification ATTRSPEC, optionally + described by the human-readable string ATTRSTR, for type T, to one in + ATTRS. VBLIST is an optional list of bounds of variable length array + parameters described by ATTRSTR. + Issue warning for conflicts and return null if any are found. + Return the concatenated access string on success. */ + +static tree +append_access_attr (tree node[3], tree attrs, const char *attrstr, + const char *attrspec, tree vblist = NULL_TREE) +{ + tree argstr = build_string (strlen (attrspec) + 1, attrspec); + tree ataccess = tree_cons (NULL_TREE, argstr, vblist); + ataccess = tree_cons (get_identifier ("access"), ataccess, NULL_TREE); + + /* The access specification being applied. This may be an implicit + access spec synthesized for array (or VLA) parameters even for + a declaration with an explicit access spec already applied, if + this call corresponds to the first declaration of the function. */ + rdwr_map new_idxs; + init_attr_rdwr_indices (&new_idxs, ataccess); + + /* The current access specification alrady applied. */ + rdwr_map cur_idxs; + init_attr_rdwr_indices (&cur_idxs, attrs); + + std::string spec; + for (auto it = new_idxs.begin (); it != new_idxs.end (); ++it) + { + const auto &newaxsref = *it; + + /* The map has two equal entries for each pointer argument that + has an associated size argument. Process just the entry for + the former. */ + if ((unsigned)newaxsref.first != newaxsref.second.ptrarg) + continue; + + const attr_access* const cura = cur_idxs.get (newaxsref.first); + if (!cura) + { + /* The new attribute needs to be added. */ + tree str = newaxsref.second.to_internal_string (); + spec += TREE_STRING_POINTER (str); + continue; + } + + /* The new access spec refers to an array/pointer argument for + which an access spec already exists. Check and diagnose any + conflicts. If no conflicts are found, merge the two. */ + const attr_access* const newa = &newaxsref.second; + + if (!attrstr) + { + tree str = NULL_TREE; + if (newa->mode != access_deferred) + str = newa->to_external_string (); + else if (cura->mode != access_deferred) + str = cura->to_external_string (); + if (str) + attrstr = TREE_STRING_POINTER (str); + } + + location_t curloc = input_location; + if (node[2] && DECL_P (node[2])) + curloc = DECL_SOURCE_LOCATION (node[2]); + + location_t prevloc = UNKNOWN_LOCATION; + if (node[1] && DECL_P (node[1])) + prevloc = DECL_SOURCE_LOCATION (node[1]); + + if (newa->mode != cura->mode + && newa->mode != access_deferred + && cura->mode != access_deferred + && newa->internal_p == cura->internal_p) + { + /* Mismatch in access mode. */ + auto_diagnostic_group d; + if (warning_at (curloc, OPT_Wattributes, + "attribute %qs mismatch with mode %qs", + attrstr, cura->mode_names[cura->mode]) + && prevloc != UNKNOWN_LOCATION) + inform (prevloc, "previous declaration here"); + continue; + } + + /* Set if PTRARG refers to a VLA with an unspecified bound (T[*]). + Be prepared for either CURA or NEWA to refer to it, depending + on which happens to come first in the declaration. */ + const bool cur_vla_ub = (cura->internal_p + && cura->sizarg == UINT_MAX + && cura->minsize == HOST_WIDE_INT_M1U); + const bool new_vla_ub = (newa->internal_p + && newa->sizarg == UINT_MAX + && newa->minsize == HOST_WIDE_INT_M1U); + + if (newa->sizarg != cura->sizarg + && attrstr + && (!(cur_vla_ub ^ new_vla_ub) + || (!cura->internal_p && !newa->internal_p))) + { + /* Avoid diagnosing redeclarations of functions with no explicit + attribute access that add one. */ + if (newa->mode == access_deferred + && cura->mode != access_deferred + && newa->sizarg == UINT_MAX + && cura->sizarg != UINT_MAX) + continue; + + if (cura->mode == access_deferred + && newa->mode != access_deferred + && cura->sizarg == UINT_MAX + && newa->sizarg != UINT_MAX) + continue; + + /* The two specs designate different size arguments. It's okay + for the explicit spec to specify a size where none is provided + by the implicit (VLA) one, as in: + __attribute__ ((access (read_write, 1, 2))) + void f (int*, int); + but not for two explicit access attributes to do that. */ + bool warned = false; + + auto_diagnostic_group d; + + if (newa->sizarg == UINT_MAX) + /* Mismatch in the presence of the size argument. */ + warned = warning_at (curloc, OPT_Wattributes, + "attribute %qs missing positional argument 2 " + "provided in previous designation by argument " + "%u", attrstr, cura->sizarg + 1); + else if (cura->sizarg == UINT_MAX) + /* Mismatch in the presence of the size argument. */ + warned = warning_at (curloc, OPT_Wattributes, + "attribute %qs positional argument 2 " + "missing in previous designation", + attrstr); + else if (newa->internal_p || cura->internal_p) + /* Mismatch in the value of the size argument and a VLA bound. */ + warned = warning_at (curloc, OPT_Wattributes, + "attribute %qs positional argument 2 " + "conflicts with previous designation " + "by argument %u", + attrstr, cura->sizarg + 1); + else + /* Mismatch in the value of the size argument between two + explicit access attributes. */ + warned = warning_at (curloc, OPT_Wattributes, + "attribute %qs mismatched positional argument " + "values %i and %i", + attrstr, newa->sizarg + 1, cura->sizarg + 1); + + if (warned) + { + /* If the previous declaration is a function (as opposed + to a typedef of one), find the location of the array + or pointer argument that uses the conflicting VLA bound + and point to it in the note. */ + const attr_access* const pa = cura->size ? cura : newa; + tree size = pa->size ? TREE_VALUE (pa->size) : NULL_TREE; + if (size && DECL_P (size)) + { + location_t argloc = UNKNOWN_LOCATION; + if (tree arg = get_argument (node[2], pa->ptrarg)) + argloc = DECL_SOURCE_LOCATION (arg); + + gcc_rich_location richloc (DECL_SOURCE_LOCATION (size)); + if (argloc != UNKNOWN_LOCATION) + richloc.add_range (argloc); + + inform (&richloc, "designating the bound of variable " + "length array argument %u", + pa->ptrarg + 1); + } + else if (prevloc != UNKNOWN_LOCATION) + inform (prevloc, "previous declaration here"); + } + + continue; + } + + if (newa->internal_p == cura->internal_p) + continue; + + /* Merge the CURA and NEWA. */ + attr_access merged = newaxsref.second; + + /* VLA seen in a declaration takes precedence. */ + if (cura->minsize == HOST_WIDE_INT_M1U) + merged.minsize = HOST_WIDE_INT_M1U; + + /* Use the explicitly specified size positional argument. */ + if (cura->sizarg != UINT_MAX) + merged.sizarg = cura->sizarg; + + /* Use the explicitly specified mode. */ + if (merged.mode == access_deferred) + merged.mode = cura->mode; + + tree str = merged.to_internal_string (); + spec += TREE_STRING_POINTER (str); + } + + if (!spec.length ()) + return NULL_TREE; + + return build_string (spec.length (), spec.c_str ()); +} + +/* Convenience wrapper for the above. */ + +tree +append_access_attr (tree node[3], tree attrs, const char *attrstr, + char code, HOST_WIDE_INT idxs[2]) +{ + char attrspec[80]; + int n = sprintf (attrspec, "%c%u", code, (unsigned) idxs[0] - 1); + if (idxs[1]) + n += sprintf (attrspec + n, ",%u", (unsigned) idxs[1] - 1); + + return append_access_attr (node, attrs, attrstr, attrspec); +} + +/* Handle the access attribute for function type NODE[0], with the function + DECL optionally in NODE[1]. The handler is called both in response to + an explict attribute access on a declaration with a mode and one or two + positional arguments, and for internally synthesized access specifications + with a string argument optionally followd by a DECL or expression + representing a VLA bound. To speed up parsing, the handler transforms + the attribute and its arguments into a string. */ + +static tree +handle_access_attribute (tree node[3], tree name, tree args, int flags, + bool *no_add_attrs) +{ + tree attrs = TYPE_ATTRIBUTES (*node); + tree type = *node; + if (POINTER_TYPE_P (type)) + { + tree ptype = TREE_TYPE (type); + if (FUNC_OR_METHOD_TYPE_P (ptype)) + type = ptype; + } + + *no_add_attrs = true; + + /* Verify a full prototype is provided so that the argument types + can be validated. Avoid diagnosing type-generic built-ins since + those have no prototype. */ + if (!args + && !prototype_p (type) + && (!attrs || !lookup_attribute ("type generic", attrs))) + { + error ("attribute %qE without arguments on a non-prototype", name); + return NULL_TREE; + } + + tree access_mode = TREE_VALUE (args); + if (TREE_CODE (access_mode) == STRING_CST) + { + const char* const str = TREE_STRING_POINTER (access_mode); + if (*str == '+') + { + /* This is a request to merge an internal specification for + a function declaration involving arrays but no explicit + attribute access. */ + tree vblist = TREE_CHAIN (args); + tree axstr = append_access_attr (node, attrs, NULL, str + 1, + vblist); + if (!axstr) + return NULL_TREE; + + /* Replace any existing access attribute specification with + the concatenation above. */ + tree axsat = tree_cons (NULL_TREE, axstr, vblist); + axsat = tree_cons (name, axsat, NULL_TREE); + + /* Recursively call self to "replace" the documented/external + form of the attribute with the condensend internal form. */ + decl_attributes (node, axsat, flags | ATTR_FLAG_INTERNAL); + return NULL_TREE; + } + + if (flags & ATTR_FLAG_INTERNAL) + { + /* This is a recursive call to handle the condensed internal + form of the attribute (see below). Since all validation + has been done simply return here, accepting the attribute + as is. */ + *no_add_attrs = false; + return NULL_TREE; + } + } + + /* Set to true when the access mode has the form of a function call + as in 'attribute (read_only (1, 2))'. That's an easy mistake to + make and so worth a special diagnostic. */ + bool funcall = false; + if (TREE_CODE (access_mode) == CALL_EXPR) + { + access_mode = CALL_EXPR_FN (access_mode); + if (TREE_CODE (access_mode) != ADDR_EXPR) + { + error ("attribute %qE invalid mode", name); + return NULL_TREE; + } + access_mode = TREE_OPERAND (access_mode, 0); + access_mode = DECL_NAME (access_mode); + funcall = true; + } + else if (TREE_CODE (access_mode) != IDENTIFIER_NODE) + { + error ("attribute %qE mode %qE is not an identifier; expected one of " + "%qs, %qs, %qs, or %qs", name, access_mode, + "read_only", "read_write", "write_only", "none"); + return NULL_TREE; + } + + const char* const access_str = IDENTIFIER_POINTER (access_mode); + const char *ps = access_str; + if (ps[0] == '_' && ps[1] == '_') + { + size_t len = strlen (ps); + if (ps[len - 1] == '_' && ps[len - 2] == '_') + ps += 2; + } + + int imode; + + { + const int nmodes = + sizeof attr_access::mode_names / sizeof *attr_access::mode_names; + + for (imode = 0; imode != nmodes; ++imode) + if (!strncmp (ps, attr_access::mode_names[imode], + strlen (attr_access::mode_names[imode]))) + break; + + if (imode == nmodes) + { + error ("attribute %qE invalid mode %qs; expected one of " + "%qs, %qs, %qs, or %qs", name, access_str, + "read_only", "read_write", "write_only", "none"); + return NULL_TREE; + } + } + + const ::access_mode mode = static_cast<::access_mode>(imode); + + if (funcall) + { + error ("attribute %qE unexpected %<(%> after mode %qs; expected " + "a positional argument or %<)%>", + name, access_str); + return NULL_TREE; + } + + args = TREE_CHAIN (args); + if (!args) + { + /* The first positional argument is required. It may be worth + dropping the requirement at some point and having read_only + apply to all const-qualified pointers and read_write or + write_only to the rest. */ + error ("attribute %<%E(%s)%> missing an argument", + name, access_str); + return NULL_TREE; + } + + /* One or more positional arguments have been specified. Validate + them. */ + tree idxnodes[2] = { NULL_TREE, NULL_TREE }; + tree argtypes[2] = { NULL_TREE, NULL_TREE }; + /* 1-based attribute positional arguments or zero if not specified. + Invalid negative or excessive values are also stored but used + only in diagnostics. */ + HOST_WIDE_INT idxs[2] = { 0, 0 }; + + /* Number of function formal arguments (used in diagnostics). */ + unsigned nfuncargs = 0; + /* Number of (optional) attribute positional arguments. */ + unsigned nattrargs = 0; + + for (unsigned i = 0; i != 2; ++i, args = TREE_CHAIN (args), ++nattrargs) + { + if (!args) + break; + + idxnodes[i] = TREE_VALUE (args); + + if (TREE_CODE (idxnodes[i]) != IDENTIFIER_NODE + && TREE_CODE (idxnodes[i]) != FUNCTION_DECL) + idxnodes[i] = default_conversion (idxnodes[i]); + + if (tree_fits_shwi_p (idxnodes[i])) + { + idxs[i] = tree_to_shwi (idxnodes[i]); + argtypes[i] = get_argument_type (type, idxs[i], &nfuncargs); + } + } + + if ((nattrargs == 1 && !idxs[0]) + || (nattrargs == 2 && (!idxs[0] || !idxs[1]))) + { + if (idxnodes[1]) + error ("attribute %<%E(%s, %E, %E)%> invalid positional argument %i", + name, access_str, idxnodes[0], idxnodes[1], idxs[0] ? 2 : 1); + else + error ("attribute %<%E(%s, %E)%> invalid positional argument %i", + name, access_str, idxnodes[0], idxs[0] ? 2 : 1); + return NULL_TREE; + } + + /* Format the attribute specification to include in diagnostics. */ + char attrstr[80]; + if (idxnodes[1]) + snprintf (attrstr, sizeof attrstr, "%s(%s, %lli, %lli)", + IDENTIFIER_POINTER (name), access_str, + (long long) idxs[0], (long long) idxs[1]); + else if (idxnodes[0]) + snprintf (attrstr, sizeof attrstr, "%s(%s, %lli)", + IDENTIFIER_POINTER (name), access_str, + (long long) idxs[0]); + else + snprintf (attrstr, sizeof attrstr, "%s(%s)", + IDENTIFIER_POINTER (name), access_str); + + /* Verify the positional argument values are in range. */ + if (!argtypes[0] || (idxnodes[1] && !argtypes[1])) + { + if (idxnodes[0]) + { + if (idxs[0] < 0 || idxs[1] < 0) + error ("attribute %qs positional argument %i invalid value %wi", + attrstr, idxs[0] < 0 ? 1 : 2, + idxs[0] < 0 ? idxs[0] : idxs[1]); + else + error ("attribute %qs positional argument %i value %wi exceeds " + "number of function arguments %u", + attrstr, idxs[0] ? 1 : 2, + idxs[0] ? idxs[0] : idxs[1], + nfuncargs); + } + else + error ("attribute %qs invalid positional argument", attrstr); + + return NULL_TREE; + } + + if (!POINTER_TYPE_P (argtypes[0])) + { + /* The first argument must have a pointer or reference type. */ + error ("attribute %qs positional argument 1 references " + "non-pointer argument type %qT", + attrstr, argtypes[0]); + return NULL_TREE; + } + + { + /* Pointers to functions are not allowed. */ + tree ptrtype = TREE_TYPE (argtypes[0]); + if (FUNC_OR_METHOD_TYPE_P (ptrtype)) + { + error ("attribute %qs positional argument 1 references " + "argument of function type %qT", + attrstr, ptrtype); + return NULL_TREE; + } + } + + if (mode == access_read_write || mode == access_write_only) + { + /* Read_write and write_only modes must reference non-const + arguments. */ + if (TYPE_READONLY (TREE_TYPE (argtypes[0]))) + { + error ("attribute %qs positional argument 1 references " + "%qs-qualified argument type %qT", + attrstr, "const", argtypes[0]); + return NULL_TREE; + } + } + else if (!TYPE_READONLY (TREE_TYPE (argtypes[0]))) + { + /* A read_only mode should ideally reference const-qualified + arguments but it's not diagnosed error if one doesn't. + This makes it possible to annotate legacy, const-incorrect + APIs. It might be worth a diagnostic along the lines of + -Wsuggest-const. */ + ; + } + + if (argtypes[1] && !INTEGRAL_TYPE_P (argtypes[1])) + { + error ("attribute %qs positional argument 2 references " + "non-integer argument type %qT", + attrstr, argtypes[1]); + return NULL_TREE; + } + + /* Verify that the new attribute doesn't conflict with any existing + attributes specified on previous declarations of the same type + and if not, concatenate the two. */ + const char code = attr_access::mode_chars[mode]; + tree new_attrs = append_access_attr (node, attrs, attrstr, code, idxs); + if (!new_attrs) + return NULL_TREE; + + /* Replace any existing access attribute specification with + the concatenation above. */ + new_attrs = tree_cons (NULL_TREE, new_attrs, NULL_TREE); + new_attrs = tree_cons (name, new_attrs, NULL_TREE); + + if (node[1]) + { + /* Repeat for the previously declared type. */ + attrs = TYPE_ATTRIBUTES (TREE_TYPE (node[1])); + new_attrs = append_access_attr (node, attrs, attrstr, code, idxs); + if (!new_attrs) + return NULL_TREE; + + new_attrs = tree_cons (NULL_TREE, new_attrs, NULL_TREE); + new_attrs = tree_cons (name, new_attrs, NULL_TREE); + } + + /* Recursively call self to "replace" the documented/external form + of the attribute with the condensed internal form. */ + decl_attributes (node, new_attrs, flags | ATTR_FLAG_INTERNAL); + return NULL_TREE; +} + +/* Extract attribute "arg spec" from each FNDECL argument that has it, + build a single attribute access corresponding to all the arguments, + and return the result. SKIP_VOIDPTR set to ignore void* parameters + (used for user-defined functions for which, unlike in for built-ins, + void* cannot be relied on to determine anything about the access + through it or whether it even takes place). + + For example, the parameters in the declaration: + + void f (int x, int y, char [x][1][y][3], char [y][2][y][5]); + + result in the following attribute access: + + value: "+^2[*],$0$1^3[*],$1$1" + list: < <0, x> <1, y> > + + where the list has a single value which itself is is a list each + of whose <node>s corresponds to one VLA bound for each of the two + parameters. */ + +tree +build_attr_access_from_parms (tree parms, bool skip_voidptr) +{ + /* Maps each named integral argument DECL seen so far to its position + in the argument list; used to associate VLA sizes with arguments. */ + hash_map<tree, unsigned> arg2pos; + + /* The string representation of the access specification for all + arguments. */ + std::string spec; + unsigned argpos = 0; + + /* A TREE_LIST of VLA bounds. */ + tree vblist = NULL_TREE; + + for (tree arg = parms; arg; arg = TREE_CHAIN (arg), ++argpos) + { + if (!DECL_P (arg)) + continue; + + tree argtype = TREE_TYPE (arg); + if (DECL_NAME (arg) && INTEGRAL_TYPE_P (argtype)) + arg2pos.put (arg, argpos); + + tree argspec = DECL_ATTRIBUTES (arg); + if (!argspec) + continue; + + if (POINTER_TYPE_P (argtype)) + { + /* void* arguments in user-defined functions could point to + anything; skip them. */ + tree reftype = TREE_TYPE (argtype); + if (skip_voidptr && VOID_TYPE_P (reftype)) + continue; + } + + /* Each parameter should have at most one "arg spec" attribute. */ + argspec = lookup_attribute ("arg spec", argspec); + if (!argspec) + continue; + + /* Attribute arg spec should have one or two arguments. */ + argspec = TREE_VALUE (argspec); + + /* The attribute arg spec string. */ + tree str = TREE_VALUE (argspec); + const char *s = TREE_STRING_POINTER (str); + + /* Create the attribute access string from the arg spec string, + optionally followed by position of the VLA bound argument if + it is one. */ + { + size_t specend = spec.length (); + if (!specend) + { + spec = '+'; + specend = 1; + } + + /* Format the access string in place. */ + int len = snprintf (NULL, 0, "%c%u%s", + attr_access::mode_chars[access_deferred], + argpos, s); + spec.resize (specend + len + 1); + sprintf (&spec[specend], "%c%u%s", + attr_access::mode_chars[access_deferred], + argpos, s); + /* Trim the trailing NUL. */ + spec.resize (specend + len); + } + + /* The (optional) list of expressions denoting the VLA bounds + N in ARGTYPE <arg>[Ni]...[Nj]...[Nk]. */ + tree argvbs = TREE_CHAIN (argspec); + if (argvbs) + { + spec += ','; + /* Add ARGVBS to the list. Their presence is indicated by + appending a comma followed by the dollar sign and, when + it corresponds to a function parameter, the position of + each bound Ni, so it can be distinguished from + an unspecified bound (as in T[*]). The list is in reverse + order of arguments and needs to be reversed to access in + order. */ + vblist = tree_cons (NULL_TREE, argvbs, vblist); + + unsigned nelts = 0; + for (tree vb = argvbs; vb; vb = TREE_CHAIN (vb), ++nelts) + { + tree bound = TREE_VALUE (vb); + if (const unsigned *psizpos = arg2pos.get (bound)) + { + /* BOUND previously seen in the parameter list. */ + TREE_PURPOSE (vb) = size_int (*psizpos); + /* Format the position string in place. */ + int len = snprintf (NULL, 0, "$%u", *psizpos); + size_t specend = spec.length (); + spec.resize (specend + len + 1); + sprintf (&spec[specend], "$%u", *psizpos); + /* Trim the trailing NUL. */ + spec.resize (specend + len); + } + else + { + /* BOUND doesn't name a parameter (it could be a global + variable or an expression such as a function call). */ + spec += '$'; + } + } + } + } + + if (!spec.length ()) + return NULL_TREE; + + /* Attribute access takes a two or three arguments. Wrap VBLIST in + another list in case it has more nodes than would otherwise fit. */ + vblist = build_tree_list (NULL_TREE, vblist); + + /* Build a single attribute access with the string describing all + array arguments and an optional list of any non-parameter VLA + bounds in order. */ + tree str = build_string (spec.length (), spec.c_str ()); + tree attrargs = tree_cons (NULL_TREE, str, vblist); + tree name = get_identifier ("access"); + return build_tree_list (name, attrargs); +} + +/* Handle a "nothrow" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_nothrow_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (TREE_CODE (*node) == FUNCTION_DECL) + TREE_NOTHROW (*node) = 1; + /* ??? TODO: Support types. */ + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "cleanup" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_cleanup_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + tree decl = *node; + tree cleanup_id, cleanup_decl; + + /* ??? Could perhaps support cleanups on TREE_STATIC, much like we do + for global destructors in C++. This requires infrastructure that + we don't have generically at the moment. It's also not a feature + we'd be missing too much, since we do have attribute constructor. */ + if (!VAR_P (decl) || TREE_STATIC (decl)) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + return NULL_TREE; + } + + /* Verify that the argument is a function in scope. */ + /* ??? We could support pointers to functions here as well, if + that was considered desirable. */ + cleanup_id = TREE_VALUE (args); + if (TREE_CODE (cleanup_id) != IDENTIFIER_NODE) + { + error ("cleanup argument not an identifier"); + *no_add_attrs = true; + return NULL_TREE; + } + cleanup_decl = lookup_name (cleanup_id); + if (!cleanup_decl || TREE_CODE (cleanup_decl) != FUNCTION_DECL) + { + error ("cleanup argument not a function"); + *no_add_attrs = true; + return NULL_TREE; + } + + /* That the function has proper type is checked with the + eventual call to build_function_call. */ + + return NULL_TREE; +} + +/* Handle a "warn_unused_result" attribute. No special handling. */ + +static tree +handle_warn_unused_result_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + /* Ignore the attribute for functions not returning any value. */ + if (VOID_TYPE_P (TREE_TYPE (*node))) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "sentinel" attribute. */ + +static tree +handle_sentinel_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + if (!prototype_p (*node)) + { + warning (OPT_Wattributes, + "%qE attribute requires prototypes with named arguments", name); + *no_add_attrs = true; + } + else + { + if (!stdarg_p (*node)) + { + warning (OPT_Wattributes, + "%qE attribute only applies to variadic functions", name); + *no_add_attrs = true; + } + } + + if (args) + { + tree position = TREE_VALUE (args); + if (position && TREE_CODE (position) != IDENTIFIER_NODE + && TREE_CODE (position) != FUNCTION_DECL) + position = default_conversion (position); + + if (TREE_CODE (position) != INTEGER_CST + || !INTEGRAL_TYPE_P (TREE_TYPE (position))) + { + warning (OPT_Wattributes, + "requested position is not an integer constant"); + *no_add_attrs = true; + } + else + { + if (tree_int_cst_lt (position, integer_zero_node)) + { + warning (OPT_Wattributes, + "requested position is less than zero"); + *no_add_attrs = true; + } + } + } + + return NULL_TREE; +} + +/* Handle a "type_generic" attribute. */ + +static tree +handle_type_generic_attribute (tree *node, tree ARG_UNUSED (name), + tree ARG_UNUSED (args), int ARG_UNUSED (flags), + bool * ARG_UNUSED (no_add_attrs)) +{ + /* Ensure we have a function type. */ + gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE); + + /* Ensure we have a variadic function. */ + gcc_assert (!prototype_p (*node) || stdarg_p (*node)); + + return NULL_TREE; +} + +/* Handle a "target" attribute. */ + +static tree +handle_target_attribute (tree *node, tree name, tree args, int flags, + bool *no_add_attrs) +{ + /* Ensure we have a function type. */ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + else if (lookup_attribute ("target_clones", DECL_ATTRIBUTES (*node))) + { + warning (OPT_Wattributes, "%qE attribute ignored due to conflict " + "with %qs attribute", name, "target_clones"); + *no_add_attrs = true; + } + else if (! targetm.target_option.valid_attribute_p (*node, name, args, + flags)) + *no_add_attrs = true; + + /* Check that there's no empty string in values of the attribute. */ + for (tree t = args; t != NULL_TREE; t = TREE_CHAIN (t)) + { + tree value = TREE_VALUE (t); + if (TREE_CODE (value) == STRING_CST + && TREE_STRING_LENGTH (value) == 1 + && TREE_STRING_POINTER (value)[0] == '\0') + { + warning (OPT_Wattributes, "empty string in attribute %<target%>"); + *no_add_attrs = true; + } + } + + return NULL_TREE; +} + +/* Handle a "target_clones" attribute. */ + +static tree +handle_target_clones_attribute (tree *node, tree name, tree ARG_UNUSED (args), + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + /* Ensure we have a function type. */ + if (TREE_CODE (*node) == FUNCTION_DECL) + { + if (TREE_CODE (TREE_VALUE (args)) != STRING_CST) + { + error ("%qE attribute argument not a string constant", name); + *no_add_attrs = true; + } + else if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (*node))) + { + warning (OPT_Wattributes, "%qE attribute ignored due to conflict " + "with %qs attribute", name, "always_inline"); + *no_add_attrs = true; + } + else if (lookup_attribute ("target", DECL_ATTRIBUTES (*node))) + { + warning (OPT_Wattributes, "%qE attribute ignored due to conflict " + "with %qs attribute", name, "target"); + *no_add_attrs = true; + } + else + /* Do not inline functions with multiple clone targets. */ + DECL_UNINLINABLE (*node) = 1; + } + else + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + return NULL_TREE; +} + +/* For handling "optimize" attribute. arguments as in + struct attribute_spec.handler. */ + +static tree +handle_optimize_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), bool *no_add_attrs) +{ + /* Ensure we have a function type. */ + if (TREE_CODE (*node) != FUNCTION_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + } + else + { + struct cl_optimization cur_opts; + tree old_opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (*node); + + /* Save current options. */ + cl_optimization_save (&cur_opts, &global_options, &global_options_set); + tree prev_target_node = build_target_option_node (&global_options, + &global_options_set); + + /* If we previously had some optimization options, use them as the + default. */ + gcc_options *saved_global_options = NULL; + + /* When #pragma GCC optimize pragma is used, it modifies global_options + without calling targetm.override_options_after_change. That can leave + target flags inconsistent for comparison. */ + if (flag_checking && optimization_current_node == optimization_default_node) + { + saved_global_options = XNEW (gcc_options); + *saved_global_options = global_options; + } + + if (old_opts) + cl_optimization_restore (&global_options, &global_options_set, + TREE_OPTIMIZATION (old_opts)); + + /* Parse options, and update the vector. */ + parse_optimize_options (args, true); + DECL_FUNCTION_SPECIFIC_OPTIMIZATION (*node) + = build_optimization_node (&global_options, &global_options_set); + tree target_node = build_target_option_node (&global_options, + &global_options_set); + if (prev_target_node != target_node) + DECL_FUNCTION_SPECIFIC_TARGET (*node) = target_node; + + /* Restore current options. */ + cl_optimization_restore (&global_options, &global_options_set, + &cur_opts); + cl_target_option_restore (&global_options, &global_options_set, + TREE_TARGET_OPTION (prev_target_node)); + + if (saved_global_options != NULL) + { + if (!seen_error ()) + cl_optimization_compare (saved_global_options, &global_options); + free (saved_global_options); + } + } + + return NULL_TREE; +} + +/* Handle a "no_split_stack" attribute. */ + +static tree +handle_no_split_stack_attribute (tree *node, tree name, + tree ARG_UNUSED (args), + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + tree decl = *node; + + if (TREE_CODE (decl) != FUNCTION_DECL) + { + error_at (DECL_SOURCE_LOCATION (decl), + "%qE attribute applies only to functions", name); + *no_add_attrs = true; + } + else if (DECL_INITIAL (decl)) + { + error_at (DECL_SOURCE_LOCATION (decl), + "cannot set %qE attribute after definition", name); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "zero_call_used_regs" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_zero_call_used_regs_attribute (tree *node, tree name, tree args, + int ARG_UNUSED (flags), + bool *no_add_attrs) +{ + tree decl = *node; + tree id = TREE_VALUE (args); + + if (TREE_CODE (decl) != FUNCTION_DECL) + { + error_at (DECL_SOURCE_LOCATION (decl), + "%qE attribute applies only to functions", name); + *no_add_attrs = true; + return NULL_TREE; + } + + if (TREE_CODE (id) != STRING_CST) + { + error_at (DECL_SOURCE_LOCATION (decl), + "%qE argument not a string", name); + *no_add_attrs = true; + return NULL_TREE; + } + + bool found = false; + for (unsigned int i = 0; zero_call_used_regs_opts[i].name != NULL; ++i) + if (strcmp (TREE_STRING_POINTER (id), + zero_call_used_regs_opts[i].name) == 0) + { + found = true; + break; + } + + if (!found) + { + error_at (DECL_SOURCE_LOCATION (decl), + "unrecognized %qE attribute argument %qs", + name, TREE_STRING_POINTER (id)); + *no_add_attrs = true; + } + + return NULL_TREE; +} + +/* Handle a "returns_nonnull" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_returns_nonnull_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + // Even without a prototype we still have a return type we can check. + if (TREE_CODE (TREE_TYPE (*node)) != POINTER_TYPE) + { + error ("%qE attribute on a function not returning a pointer", name); + *no_add_attrs = true; + } + return NULL_TREE; +} + +/* Handle a "designated_init" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_designated_init_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + if (TREE_CODE (*node) != RECORD_TYPE) + { + error ("%qE attribute is only valid on %<struct%> type", name); + *no_add_attrs = true; + } + return NULL_TREE; +} + + +/* Handle a "fallthrough" attribute; arguments as in struct + attribute_spec.handler. */ + +tree +handle_fallthrough_attribute (tree *, tree name, tree, int, + bool *no_add_attrs) +{ + pedwarn (input_location, OPT_Wattributes, "%qE attribute ignored", name); + *no_add_attrs = true; + return NULL_TREE; +} + +/* Handle a "patchable_function_entry" attributes; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_patchable_function_entry_attribute (tree *, tree name, tree args, + int, bool *no_add_attrs) +{ + for (; args; args = TREE_CHAIN (args)) + { + tree val = TREE_VALUE (args); + if (val && TREE_CODE (val) != IDENTIFIER_NODE + && TREE_CODE (val) != FUNCTION_DECL) + val = default_conversion (val); + + if (!tree_fits_uhwi_p (val)) + { + warning (OPT_Wattributes, + "%qE attribute argument %qE is not an integer constant", + name, val); + *no_add_attrs = true; + return NULL_TREE; + } + + if (tree_to_uhwi (val) > USHRT_MAX) + { + warning (OPT_Wattributes, + "%qE attribute argument %qE exceeds %u", + name, val, USHRT_MAX); + *no_add_attrs = true; + return NULL_TREE; + } + } + return NULL_TREE; +} + +/* Handle a "NSObject" attributes; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_nsobject_attribute (tree *node, tree name, tree args, + int /*flags*/, bool *no_add_attrs) +{ + *no_add_attrs = true; + + /* This attribute only applies to typedefs (or field decls for properties), + we drop it otherwise - but warn about this if enabled. */ + if (TREE_CODE (*node) != TYPE_DECL && TREE_CODE (*node) != FIELD_DECL) + { + warning (OPT_WNSObject_attribute, "%qE attribute may be put on a" + " typedef only; attribute is ignored", name); + return NULL_TREE; + } + + /* The original implementation only allowed pointers to records, however + recent implementations also allow void *. */ + tree type = TREE_TYPE (*node); + if (!type || !POINTER_TYPE_P (type) + || (TREE_CODE (TREE_TYPE (type)) != RECORD_TYPE + && !VOID_TYPE_P (TREE_TYPE (type)))) + { + error ("%qE attribute is for pointer types only", name); + return NULL_TREE; + } + + tree t = tree_cons (name, args, TYPE_ATTRIBUTES (type)); + TREE_TYPE (*node) = build_type_attribute_variant (type, t); + + return NULL_TREE; +} + +/* Handle a "objc_root_class" attributes; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_objc_root_class_attribute (tree */*node*/, tree name, tree /*args*/, + int /*flags*/, bool *no_add_attrs) +{ + /* This has no meaning outside Objective-C. */ + if (!c_dialect_objc()) + warning (OPT_Wattributes, "%qE is only applicable to Objective-C" + " class interfaces, attribute ignored", name); + + *no_add_attrs = true; + return NULL_TREE; +} + +/* Handle an "objc_nullability" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_objc_nullability_attribute (tree *node, tree name, tree args, + int /*flags*/, + bool *no_add_attrs) +{ + *no_add_attrs = true; + + tree type = TREE_TYPE (*node); + if (TREE_CODE (*node) == FUNCTION_DECL) + type = TREE_TYPE (type); + + if (type && !POINTER_TYPE_P (type)) + { + error ("%qE cannot be applied to non-pointer type %qT", name, type); + return NULL_TREE; + } + + /* We accept objc_nullability() with a single argument. + string: "unspecified", "nullable", "nonnull" or "resettable" + integer: 0 and 3 where the values have the same meaning as + the strings. */ + tree val = TREE_VALUE (args); + if (TREE_CODE (val) == INTEGER_CST) + { + val = default_conversion (val); + if (!tree_fits_uhwi_p (val) || tree_to_uhwi (val) > 3) + error ("%qE attribute argument %qE is not an integer constant" + " between 0 and 3", name, val); + else + *no_add_attrs = false; /* OK */ + } + else if (TREE_CODE (val) == STRING_CST + && (strcmp (TREE_STRING_POINTER (val), "nullable") == 0 + || strcmp (TREE_STRING_POINTER (val), "nonnull") == 0 + || strcmp (TREE_STRING_POINTER (val), "unspecified") == 0 + || strcmp (TREE_STRING_POINTER (val), "resettable") == 0)) + *no_add_attrs = false; /* OK */ + else if (val != error_mark_node) + error ("%qE attribute argument %qE is not recognised", name, val); + + return NULL_TREE; +} + +/* Handle a "tainted_args" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_tainted_args_attribute (tree *node, tree name, tree, int, + bool *no_add_attrs) +{ + if (TREE_CODE (*node) != FUNCTION_DECL + && TREE_CODE (*node) != FIELD_DECL) + { + warning (OPT_Wattributes, "%qE attribute ignored; valid only " + "for functions and function pointer fields", + name); + *no_add_attrs = true; + return NULL_TREE; + } + + if (TREE_CODE (*node) == FIELD_DECL + && !(TREE_CODE (TREE_TYPE (*node)) == POINTER_TYPE + && TREE_CODE (TREE_TYPE (TREE_TYPE (*node))) == FUNCTION_TYPE)) + { + warning (OPT_Wattributes, "%qE attribute ignored;" + " field must be a function pointer", + name); + *no_add_attrs = true; + return NULL_TREE; + } + + *no_add_attrs = false; /* OK */ + + return NULL_TREE; +} + +/* Attempt to partially validate a single attribute ATTR as if + it were to be applied to an entity OPER. */ + +static bool +validate_attribute (location_t atloc, tree oper, tree attr) +{ + /* Determine whether the name of the attribute is valid + and fail with an error if not. */ + tree atname = get_attribute_name (attr); + if (!lookup_attribute_spec (atname)) + { + if (atloc != UNKNOWN_LOCATION) + error_at (atloc, "unknown attribute %qE", atname); + return false; + } + + tree args = TREE_VALUE (attr); + if (!args) + return true; + + /* FIXME: Do some validation. */ + const char *atstr = IDENTIFIER_POINTER (atname); + if (!strcmp (atstr, "format")) + return true; + + /* Only when attribute arguments have been provided try to validate + the whole thing. decl_attributes doesn't return an indication of + success or failure so proceed regardless. */ + const char tmpname[] = "__builtin_has_attribute_tmp."; + tree tmpid = get_identifier (tmpname); + tree tmpdecl; + if (!strcmp (atstr, "vector_size")) + { + tree type = TYPE_P (oper) ? oper : TREE_TYPE (oper); + /* Check for function type here since type_for_vector_size + strips it while looking for a function's return type. */ + if (FUNC_OR_METHOD_TYPE_P (type)) + { + warning_at (atloc, OPT_Wattributes, + "invalid operand type %qT for %qs", type, atstr); + return false; + } + + type = type_for_vector_size (type); + if (VECTOR_TYPE_P (type)) + type = TREE_TYPE (type); + /* Avoid trying to apply attribute vector_size to OPER since + it's overly restrictive. Simply make sure it has the right + type. */ + return type_valid_for_vector_size (type, atname, args, NULL); + } + + if (TYPE_P (oper)) + tmpdecl = build_decl (atloc, TYPE_DECL, tmpid, oper); + else if (DECL_P (oper)) + tmpdecl = build_decl (atloc, TREE_CODE (oper), tmpid, TREE_TYPE (oper)); + else if (EXPR_P (oper)) + tmpdecl = build_decl (atloc, TYPE_DECL, tmpid, TREE_TYPE (oper)); + else + return false; + + /* Temporarily clear CURRENT_FUNCTION_DECL to make decl_attributes + believe the DECL declared above is at file scope. (See bug 87526.) */ + tree save_curfunc = current_function_decl; + current_function_decl = NULL_TREE; + if (DECL_P (tmpdecl)) + { + if (DECL_P (oper)) + /* An alias cannot be a definition so declare the symbol extern. */ + DECL_EXTERNAL (tmpdecl) = true; + /* Attribute visibility only applies to symbols visible from other + translation units so make it "public." */ + TREE_PUBLIC (tmpdecl) = TREE_PUBLIC (oper); + } + decl_attributes (&tmpdecl, attr, 0); + current_function_decl = save_curfunc; + + /* FIXME: Change decl_attributes to indicate success or failure (and + parameterize it to avoid failing with errors). */ + return true; +} + +/* Return true if the DECL, EXPR, or TYPE t has been declared with + attribute ATTR. For DECL, consider also its type. For EXPR, + consider just its type. */ + +bool +has_attribute (location_t atloc, tree t, tree attr, tree (*convert)(tree)) +{ + if (!attr || !t || t == error_mark_node) + return false; + + if (!validate_attribute (atloc, t, attr)) + return false; + + tree type = NULL_TREE; + tree expr = NULL_TREE; + if (TYPE_P (t)) + type = t; + else + { + do + { + /* Determine the array element/member declaration from + a COMPONENT_REF and an INDIRECT_REF involving a refeence. */ + STRIP_NOPS (t); + tree_code code = TREE_CODE (t); + if (code == INDIRECT_REF) + { + tree op0 = TREE_OPERAND (t, 0); + if (TREE_CODE (TREE_TYPE (op0)) == REFERENCE_TYPE) + t = op0; + else + break; + } + else if (code == COMPONENT_REF) + t = TREE_OPERAND (t, 1); + else + break; + } while (true); + expr = t; + } + + /* Set to true when an attribute is found in the referenced entity + that matches the specified attribute. */ + bool found_match = false; + + tree atname = get_attribute_name (attr); + const char *namestr = IDENTIFIER_POINTER (atname); + + /* Iterate once for a type and twice for a function or variable + declaration: once for the DECL and the second time for its + TYPE. */ + for (bool done = false; !found_match && !done; ) + { + tree atlist; + if (type) + { + if (type == error_mark_node) + { + /* This could be a label. FIXME: add support for labels. */ + warning_at (atloc, OPT_Wattributes, + (TYPE_P (t) + ? G_("%qs attribute not supported for %qT " + "in %<__builtin_has_attribute%>") + : G_("%qs attribute not supported for %qE " + "in %<__builtin_has_attribute%>")), + namestr, t); + return false; + } + + /* Clear EXPR to prevent considering it again below. */ + atlist = TYPE_ATTRIBUTES (type); + expr = NULL_TREE; + done = true; + } + else if (DECL_P (expr)) + { + /* Set TYPE to the DECL's type to process it on the next + iteration. */ + atlist = DECL_ATTRIBUTES (expr); + type = TREE_TYPE (expr); + } + else + { + type = TREE_TYPE (expr); + atlist = TYPE_ATTRIBUTES (type); + done = true; + } + + /* True when an attribute with the sought name (though not necessarily + with the sought attributes) has been found on the attribute chain. */ + bool found_attr = false; + + /* When clear, the first mismatched attribute argument results + in failure. Otherwise, the first matched attribute argument + results in success. */ + bool attr_nonnull = !strcmp ("nonnull", namestr); + bool ignore_mismatches = attr_nonnull; + + /* Iterate over the instances of the sought attribute on the DECL or + TYPE (there may be multiple instances with different arguments). */ + for (; (atlist = lookup_attribute (namestr, atlist)); + found_attr = true, atlist = TREE_CHAIN (atlist)) + { + /* If there are no arguments to match the result is true except + for nonnull where the attribute with no arguments must match. */ + if (!TREE_VALUE (attr)) + return attr_nonnull ? !TREE_VALUE (atlist) : true; + + /* Attribute nonnull with no arguments subsumes all values of + the attribute. FIXME: This is overly broad since it only + applies to pointer arguments, but querying non-pointer + arguments is diagnosed. */ + if (!TREE_VALUE (atlist) && attr_nonnull) + return true; + + /* Iterate over the DECL or TYPE attribute argument's values. */ + for (tree val = TREE_VALUE (atlist); val; val = TREE_CHAIN (val)) + { + /* Iterate over the arguments in the sought attribute comparing + their values to those specified for the DECL or TYPE. */ + for (tree arg = TREE_VALUE (attr); arg; arg = TREE_CHAIN (arg)) + { + tree v1 = TREE_VALUE (val); + tree v2 = TREE_VALUE (arg); + if (v1 == v2) + return true; + + if (!v1 || !v2) + break; + + if (TREE_CODE (v1) == IDENTIFIER_NODE + || TREE_CODE (v2) == IDENTIFIER_NODE) + /* Two identifiers are the same if their values are + equal (that's handled above). Otherwise ther are + either not the same or oneis not an identifier. */ + return false; + + /* Convert to make them equality-comparable. */ + v1 = convert (v1); + v2 = convert (v2); + + /* A positive value indicates equality, negative means + "don't know." */ + if (simple_cst_equal (v1, v2) == 1) + return true; + + if (!ignore_mismatches) + break; + } + } + } + + if (!found_attr) + { + /* Some attributes are encoded directly in the tree node. */ + if (!strcmp ("aligned", namestr)) + { + if (tree arg = TREE_VALUE (attr)) + { + arg = convert (TREE_VALUE (arg)); + if (!tree_fits_uhwi_p (arg)) + /* Invalid argument. */; + else if (expr && DECL_P (expr) + && DECL_USER_ALIGN (expr)) + found_match = DECL_ALIGN_UNIT (expr) == tree_to_uhwi (arg); + else if (type && TYPE_USER_ALIGN (type)) + found_match = TYPE_ALIGN_UNIT (type) == tree_to_uhwi (arg); + } + else if (expr && DECL_P (expr)) + found_match = DECL_USER_ALIGN (expr); + else if (type) + found_match = TYPE_USER_ALIGN (type); + } + else if (!strcmp ("const", namestr)) + { + if (expr && DECL_P (expr)) + found_match = TREE_READONLY (expr); + } + else if (!strcmp ("noreturn", namestr)) + { + /* C11 _Noreturn sets the volatile bit without attaching + an attribute to the decl. */ + if (expr + && DECL_P (expr) + && FUNC_OR_METHOD_TYPE_P (TREE_TYPE (expr))) + found_match = TREE_THIS_VOLATILE (expr); + } + else if (!strcmp ("pure", namestr)) + { + if (expr && DECL_P (expr)) + found_match = DECL_PURE_P (expr); + } + else if (!strcmp ("deprecated", namestr)) + { + found_match = TREE_DEPRECATED (expr ? expr : type); + if (found_match) + return true; + } + else if (!strcmp ("vector_size", namestr)) + { + if (!type || !VECTOR_TYPE_P (type)) + return false; + + if (tree arg = TREE_VALUE (attr)) + { + /* Compare the vector size argument for equality. */ + arg = convert (TREE_VALUE (arg)); + return tree_int_cst_equal (arg, TYPE_SIZE_UNIT (type)) == 1; + } + else + return true; + } + else if (!strcmp ("warn_if_not_aligned", namestr)) + { + if (tree arg = TREE_VALUE (attr)) + { + arg = convert (TREE_VALUE (arg)); + if (expr && DECL_P (expr)) + found_match = (DECL_WARN_IF_NOT_ALIGN (expr) + == tree_to_uhwi (arg) * BITS_PER_UNIT); + else if (type) + found_match = (TYPE_WARN_IF_NOT_ALIGN (type) + == tree_to_uhwi (arg) * BITS_PER_UNIT); + } + else if (expr && DECL_P (expr)) + found_match = DECL_WARN_IF_NOT_ALIGN (expr); + else if (type) + found_match = TYPE_WARN_IF_NOT_ALIGN (type); + } + else if (!strcmp ("transparent_union", namestr)) + { + if (type) + found_match = TYPE_TRANSPARENT_AGGR (type) != 0; + } + else if (!strcmp ("mode", namestr)) + { + /* Finally issue a warning for attributes that cannot + be supported in this context. Attribute mode is not + added to a symbol and cannot be determined from it. */ + warning_at (atloc, OPT_Wattributes, + "%qs attribute not supported in " + "%<__builtin_has_attribute%>", namestr); + break; + } + } + } + return found_match; +} |