Add D front-end, libphobos library, and D2 testsuite.

ChangeLog:

	* Makefile.def (target_modules): Add libphobos.
	(flags_to_pass): Add GDC, GDCFLAGS, GDC_FOR_TARGET and
	GDCFLAGS_FOR_TARGET.
	(dependencies): Make libphobos depend on libatomic, libbacktrace
	configure, and zlib configure.
	(language): Add language d.
	* Makefile.in: Rebuild.
	* Makefile.tpl (BUILD_EXPORTS): Add GDC and GDCFLAGS.
	(HOST_EXPORTS): Add GDC.
	(POSTSTAGE1_HOST_EXPORTS): Add GDC and GDC_FOR_BUILD.
	(BASE_TARGET_EXPORTS): Add GDC.
	(GDC_FOR_BUILD, GDC, GDCFLAGS): New variables.
	(GDC_FOR_TARGET, GDC_FLAGS_FOR_TARGET): New variables.
	(EXTRA_HOST_FLAGS): Add GDC.
	(STAGE1_FLAGS_TO_PASS): Add GDC.
	(EXTRA_TARGET_FLAGS): Add GDC and GDCFLAGS.
	* config-ml.in: Treat GDC and GDCFLAGS like other compiler/flag
	environment variables.
	* configure: Rebuild.
	* configure.ac: Add target-libphobos to target_libraries.  Set and
	substitute GDC_FOR_BUILD and GDC_FOR_TARGET.

config/ChangeLog:

	* multi.m4: Set GDC.

gcc/ChangeLog:

	* Makefile.in (tm_d_file_list, tm_d_include_list): New variables.
	(TM_D_H, D_TARGET_DEF, D_TARGET_H, D_TARGET_OBJS): New variables.
	(tm_d.h, cs-tm_d.h, default-d.o): New rules.
	(d/d-target-hooks-def.h, s-d-target-hooks-def-h): New rules.
	(s-tm-texi): Also check timestamp on d-target.def.
	(generated_files): Add TM_D_H and d-target-hooks-def.h.
	(build/genhooks.o): Also depend on D_TARGET_DEF.
	* config.gcc (tm_d_file, d_target_objs, target_has_targetdm): New
	variables.
	* config/aarch64/aarch64-d.c: New file.
	* config/aarch64/aarch64-linux.h (GNU_USER_TARGET_D_CRITSEC_SIZE):
	Define.
	* config/aarch64/aarch64-protos.h (aarch64_d_target_versions): New
	prototype.
	* config/aarch64/aarch64.h (TARGET_D_CPU_VERSIONS): Define.
	* config/aarch64/t-aarch64 (aarch64-d.o): New rule.
	* config/arm/arm-d.c: New file.
	* config/arm/arm-protos.h (arm_d_target_versions): New prototype.
	* config/arm/arm.h (TARGET_D_CPU_VERSIONS): Define.
	* config/arm/linux-eabi.h (EXTRA_TARGET_D_OS_VERSIONS): Define.
	* config/arm/t-arm (arm-d.o): New rule.
	* config/default-d.c: New file.
	* config/glibc-d.c: New file.
	* config/gnu.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/i386/i386-d.c: New file.
	* config/i386/i386-protos.h (ix86_d_target_versions): New prototype.
	* config/i386/i386.h (TARGET_D_CPU_VERSIONS): Define.
	* config/i386/linux-common.h (EXTRA_TARGET_D_OS_VERSIONS): Define.
	(GNU_USER_TARGET_D_CRITSEC_SIZE): Define.
	* config/i386/t-i386 (i386-d.o): New rule.
	* config/kfreebsd-gnu.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/kopensolaris-gnu.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/linux-android.h (ANDROID_TARGET_D_OS_VERSIONS): Define.
	* config/linux.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/mips/linux-common.h (EXTRA_TARGET_D_OS_VERSIONS): Define.
	* config/mips/mips-d.c: New file.
	* config/mips/mips-protos.h (mips_d_target_versions): New prototype.
	* config/mips/mips.h (TARGET_D_CPU_VERSIONS): Define.
	* config/mips/t-mips (mips-d.o): New rule.
	* config/powerpcspe/linux.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/powerpcspe/linux64.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/powerpcspe/powerpcspe-d.c: New file.
	* config/powerpcspe/powerpcspe-protos.h (rs6000_d_target_versions):
	New prototype.
	* config/powerpcspe/powerpcspe.c (rs6000_output_function_epilogue):
	Support GNU D by using 0 as the language type.
	* config/powerpcspe/powerpcspe.h (TARGET_D_CPU_VERSIONS): Define.
	* config/powerpcspe/t-powerpcspe (powerpcspe-d.o): New rule.
	* config/riscv/riscv-d.c: New file.
	* config/riscv/riscv-protos.h (riscv_d_target_versions): New
	prototype.
	* config/riscv/riscv.h (TARGET_D_CPU_VERSIONS): Define.
	* config/riscv/t-riscv (riscv-d.o): New rule.
	* config/rs6000/linux.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/rs6000/linux64.h (GNU_USER_TARGET_D_OS_VERSIONS): Define.
	* config/rs6000/rs6000-d.c: New file.
	* config/rs6000/rs6000-protos.h (rs6000_d_target_versions): New
	prototype.
	* config/rs6000/rs6000.c (rs6000_output_function_epilogue):
	Support GNU D by using 0 as the language type.
	* config/rs6000/rs6000.h (TARGET_D_CPU_VERSIONS): Define.
	* config/rs6000/t-rs6000 (rs6000-d.o): New rule.
	* config/s390/s390-d.c: New file.
	* config/s390/s390-protos.h (s390_d_target_versions): New prototype.
	* config/s390/s390.h (TARGET_D_CPU_VERSIONS): Define.
	* config/s390/t-s390 (s390-d.o): New rule.
	* config/sparc/sparc-d.c: New file.
	* config/sparc/sparc-protos.h (sparc_d_target_versions): New
	prototype.
	* config/sparc/sparc.h (TARGET_D_CPU_VERSIONS): Define.
	* config/sparc/t-sparc (sparc-d.o): New rule.
	* config/t-glibc (glibc-d.o): New rule.
	* configure: Regenerated.
	* configure.ac (tm_d_file): New variable.
	(tm_d_file_list, tm_d_include_list, d_target_objs): Add substitutes.
	* doc/contrib.texi (Contributors): Add self for the D frontend.
	* doc/frontends.texi (G++ and GCC): Mention D as a supported language.
	* doc/install.texi (Configuration): Mention libphobos as an option for
	--enable-shared.  Mention d as an option for --enable-languages.
	(Testing): Mention check-d as a target.
	* doc/invoke.texi (Overall Options): Mention .d, .dd, and .di as file
	name suffixes.  Mention d as a -x option.
	* doc/sourcebuild.texi (Top Level): Mention libphobos.
	* doc/standards.texi (Standards): Add section on D language.
	* doc/tm.texi: Regenerated.
	* doc/tm.texi.in: Add @node for D language and ABI, and @hook for
	TARGET_CPU_VERSIONS, TARGET_D_OS_VERSIONS, and TARGET_D_CRITSEC_SIZE.
	* dwarf2out.c (is_dlang): New function.
	(gen_compile_unit_die): Use DW_LANG_D for D.
	(declare_in_namespace): Return module die for D, instead of adding
	extra declarations into the namespace.
	(gen_namespace_die): Generate DW_TAG_module for D.
	(gen_decl_die): Handle CONST_DECLSs for D.
	(dwarf2out_decl): Likewise.
	(prune_unused_types_walk_local_classes): Handle DW_tag_interface_type.
	(prune_unused_types_walk): Handle DW_tag_interface_type same as other
	kinds of aggregates.
	* gcc.c (default_compilers): Add entries for .d, .dd and .di.
	* genhooks.c: Include d/d-target.def.

gcc/po/ChangeLog:

	* EXCLUDES: Add sources from d/dmd.

gcc/testsuite/ChangeLog:

	* gcc.misc-tests/help.exp: Add D to option descriptions check.
	* gdc.dg/asan/asan.exp: New file.
	* gdc.dg/asan/gdc272.d: New test.
	* gdc.dg/compilable.d: New test.
	* gdc.dg/dg.exp: New file.
	* gdc.dg/gdc254.d: New test.
	* gdc.dg/gdc260.d: New test.
	* gdc.dg/gdc270a.d: New test.
	* gdc.dg/gdc270b.d: New test.
	* gdc.dg/gdc282.d: New test.
	* gdc.dg/gdc283.d: New test.
	* gdc.dg/imports/gdc170.d: New test.
	* gdc.dg/imports/gdc231.d: New test.
	* gdc.dg/imports/gdc239.d: New test.
	* gdc.dg/imports/gdc241a.d: New test.
	* gdc.dg/imports/gdc241b.d: New test.
	* gdc.dg/imports/gdc251a.d: New test.
	* gdc.dg/imports/gdc251b.d: New test.
	* gdc.dg/imports/gdc253.d: New test.
	* gdc.dg/imports/gdc254a.d: New test.
	* gdc.dg/imports/gdc256.d: New test.
	* gdc.dg/imports/gdc27.d: New test.
	* gdc.dg/imports/gdcpkg256/package.d: New test.
	* gdc.dg/imports/runnable.d: New test.
	* gdc.dg/link.d: New test.
	* gdc.dg/lto/lto.exp: New file.
	* gdc.dg/lto/ltotests_0.d: New test.
	* gdc.dg/lto/ltotests_1.d: New test.
	* gdc.dg/runnable.d: New test.
	* gdc.dg/simd.d: New test.
	* gdc.test/gdc-test.exp: New file.
	* lib/gdc-dg.exp: New file.
	* lib/gdc.exp: New file.

libphobos/ChangeLog:

	* Makefile.am: New file.
	* Makefile.in: New file.
	* acinclude.m4: New file.
	* aclocal.m4: New file.
	* config.h.in: New file.
	* configure: New file.
	* configure.ac: New file.
	* d_rules.am: New file.
	* libdruntime/Makefile.am: New file.
	* libdruntime/Makefile.in: New file.
	* libdruntime/__entrypoint.di: New file.
	* libdruntime/__main.di: New file.
	* libdruntime/gcc/attribute.d: New file.
	* libdruntime/gcc/backtrace.d: New file.
	* libdruntime/gcc/builtins.d: New file.
	* libdruntime/gcc/config.d.in: New file.
	* libdruntime/gcc/deh.d: New file.
	* libdruntime/gcc/libbacktrace.d.in: New file.
	* libdruntime/gcc/unwind/arm.d: New file.
	* libdruntime/gcc/unwind/arm_common.d: New file.
	* libdruntime/gcc/unwind/c6x.d: New file.
	* libdruntime/gcc/unwind/generic.d: New file.
	* libdruntime/gcc/unwind/package.d: New file.
	* libdruntime/gcc/unwind/pe.d: New file.
	* m4/autoconf.m4: New file.
	* m4/druntime.m4: New file.
	* m4/druntime/cpu.m4: New file.
	* m4/druntime/libraries.m4: New file.
	* m4/druntime/os.m4: New file.
	* m4/gcc_support.m4: New file.
	* m4/gdc.m4: New file.
	* m4/libtool.m4: New file.
	* src/Makefile.am: New file.
	* src/Makefile.in: New file.
	* src/libgphobos.spec.in: New file.
	* testsuite/Makefile.am: New file.
	* testsuite/Makefile.in: New file.
	* testsuite/config/default.exp: New file.
	* testsuite/lib/libphobos-dg.exp: New file.
	* testsuite/lib/libphobos.exp: New file.
	* testsuite/testsuite_flags.in: New file.

From-SVN: r265573

50 files changed, 2348 insertions, 0 deletions

diff --git a/libphobos/testsuite/Makefile.am b/libphobos/testsuite/Makefile.am
new file mode 100644
index 0000000..d640c0b
--- /dev/null
+++ b/libphobos/testsuite/Makefile.am
@@ -0,0 +1,32 @@
+## Makefile for the testsuite subdirectory of the D Standard library.
+## Copyright (C) 2016-2018 Free Software Foundation, Inc.
+##
+## 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/>.
+
+# Process this file with automake to produce Makefile.in.
+
+AUTOMAKE_OPTIONS = foreign dejagnu
+
+# Setup the testing framework, if you have one
+EXPECT = $(shell if test -f $(top_builddir)/../expect/expect; then \
+	   echo $(top_builddir)/../expect/expect; else echo expect; fi)
+
+_RUNTEST = $(shell if test -f $(top_srcdir)/../dejagnu/runtest; then \
+	     echo $(top_srcdir)/../dejagnu/runtest; else echo runtest; fi)
+RUNTEST = "$(_RUNTEST) $(AM_RUNTESTFLAGS)"
+
+AM_MAKEFLAGS = "EXEEXT=$(EXEEXT)"
+
+CLEANFILES = *.log *.sum
diff --git a/libphobos/testsuite/Makefile.in b/libphobos/testsuite/Makefile.in
new file mode 100644
index 0000000..ab18deb
--- /dev/null
+++ b/libphobos/testsuite/Makefile.in
@@ -0,0 +1,454 @@
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+# Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
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+
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+EXPECT = $(shell if test -f $(top_builddir)/../expect/expect; then \
+	   echo $(top_builddir)/../expect/expect; else echo expect; fi)
+
+_RUNTEST = $(shell if test -f $(top_srcdir)/../dejagnu/runtest; then \
+	     echo $(top_srcdir)/../dejagnu/runtest; else echo runtest; fi)
+
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+
+.SUFFIXES:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign --ignore-deps testsuite/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign --ignore-deps testsuite/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+testsuite_flags: $(top_builddir)/config.status $(srcdir)/testsuite_flags.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+tags: TAGS
+TAGS:
+
+ctags: CTAGS
+CTAGS:
+
+
+check-DEJAGNU: site.exp
+	srcdir='$(srcdir)'; export srcdir; \
+	EXPECT=$(EXPECT); export EXPECT; \
+	runtest=$(RUNTEST); \
+	if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \
+	  exit_status=0; l='$(DEJATOOL)'; for tool in $$l; do \
+	    if $$runtest $(AM_RUNTESTFLAGS) $(RUNTESTDEFAULTFLAGS) $(RUNTESTFLAGS); \
+	    then :; else exit_status=1; fi; \
+	  done; \
+	else echo "WARNING: could not find \`runtest'" 1>&2; :;\
+	fi; \
+	exit $$exit_status
+site.exp: Makefile $(EXTRA_DEJAGNU_SITE_CONFIG)
+	@echo 'Making a new site.exp file...'
+	@echo '## these variables are automatically generated by make ##' >site.tmp
+	@echo '# Do not edit here.  If you wish to override these values' >>site.tmp
+	@echo '# edit the last section' >>site.tmp
+	@echo 'set srcdir "$(srcdir)"' >>site.tmp
+	@echo "set objdir `pwd`" >>site.tmp
+	@echo 'set build_alias "$(build_alias)"' >>site.tmp
+	@echo 'set build_triplet $(build_triplet)' >>site.tmp
+	@echo 'set host_alias "$(host_alias)"' >>site.tmp
+	@echo 'set host_triplet $(host_triplet)' >>site.tmp
+	@echo 'set target_alias "$(target_alias)"' >>site.tmp
+	@echo 'set target_triplet $(target_triplet)' >>site.tmp
+	@list='$(EXTRA_DEJAGNU_SITE_CONFIG)'; for f in $$list; do \
+	  echo "## Begin content included from file $$f.  Do not modify. ##" \
+	   && cat `test -f "$$f" || echo '$(srcdir)/'`$$f \
+	   && echo "## End content included from file $$f. ##" \
+	   || exit 1; \
+	 done >> site.tmp
+	@echo "## End of auto-generated content; you can edit from here. ##" >> site.tmp
+	@if test -f site.exp; then \
+	   sed -e '1,/^## End of auto-generated content.*##/d' site.exp >> site.tmp; \
+	 fi
+	@-rm -f site.bak
+	@test ! -f site.exp || mv site.exp site.bak
+	@mv site.tmp site.exp
+
+distclean-DEJAGNU:
+	-rm -f site.exp site.bak
+	-l='$(DEJATOOL)'; for tool in $$l; do \
+	  rm -f $$tool.sum $$tool.log; \
+	done
+check-am: all-am
+	$(MAKE) $(AM_MAKEFLAGS) check-DEJAGNU
+check: check-am
+all-am: Makefile
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-DEJAGNU distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: check-am install-am install-strip
+
+.PHONY: all all-am check check-DEJAGNU check-am clean clean-generic \
+	clean-libtool distclean distclean-DEJAGNU distclean-generic \
+	distclean-libtool dvi dvi-am html html-am info info-am install \
+	install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libphobos/testsuite/config/default.exp b/libphobos/testsuite/config/default.exp
new file mode 100644
index 0000000..10dc931
--- /dev/null
+++ b/libphobos/testsuite/config/default.exp
@@ -0,0 +1,17 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_lib "standard.exp"
diff --git a/libphobos/testsuite/lib/libphobos-dg.exp b/libphobos/testsuite/lib/libphobos-dg.exp
new file mode 100644
index 0000000..ffb2ba3
--- /dev/null
+++ b/libphobos/testsuite/lib/libphobos-dg.exp
@@ -0,0 +1,52 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_gcc_lib multiline.exp
+load_gcc_lib prune.exp
+load_gcc_lib scandump.exp
+load_gcc_lib scanltranstree.exp
+load_gcc_lib scanwpaipa.exp
+load_gcc_lib file-format.exp
+load_gcc_lib scanasm.exp
+load_gcc_lib scanlang.exp
+load_gcc_lib scanrtl.exp
+load_gcc_lib scantree.exp
+load_gcc_lib scanipa.exp
+load_gcc_lib torture-options.exp
+load_gcc_lib timeout-dg.exp
+load_gcc_lib fortran-modules.exp
+load_gcc_lib gcc-dg.exp
+
+# Utility routines.
+
+#
+# libphobos_load -- wrapper around default libphobos_load to handle tests that
+# require program arguments passed to them.
+#
+
+if { [info procs libphobos_load] != [list] \
+      && [info procs prev_libphobos_load] == [list] } {
+    rename libphobos_load prev_libphobos_load
+
+    proc libphobos_load { program args } {
+        global libphobos_run_args
+        if { $libphobos_run_args != "" } {
+            set args [concat "{$libphobos_run_args}"]
+        }
+        set result [eval [list prev_libphobos_load $program] $args ]
+        return $result
+    }
+}
diff --git a/libphobos/testsuite/lib/libphobos.exp b/libphobos/testsuite/lib/libphobos.exp
new file mode 100644
index 0000000..7dbf667
--- /dev/null
+++ b/libphobos/testsuite/lib/libphobos.exp
@@ -0,0 +1,193 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+#
+# DejaGnu does not have proper library search paths for load_lib.
+# We have to explicitly load everything that gdc.exp wants to load.
+#
+
+proc load_gcc_lib { filename } {
+    global srcdir loaded_libs
+
+    load_file $srcdir/../../gcc/testsuite/lib/$filename
+    set loaded_libs($filename) ""
+}
+
+load_lib dg.exp
+load_lib libgloss.exp
+
+load_gcc_lib target-supports.exp
+load_gcc_lib target-supports-dg.exp
+load_gcc_lib dg-options.exp
+load_gcc_lib target-libpath.exp
+load_gcc_lib timeout.exp
+load_gcc_lib wrapper.exp
+load_gcc_lib target-utils.exp
+load_gcc_lib gcc-defs.exp
+
+set TESTING_IN_BUILD_TREE 1
+
+# Define libphobos callbacks for dg.exp.
+
+proc libphobos-dg-test { prog do_what extra_tool_flags } {
+    set compile_type ""
+    set output_file ""
+
+    # Set up the compiler flags, based on what we're going to do.
+    switch $do_what {
+        "run" {
+            set compile_type "executable"
+            # FIXME: "./" is to cope with "." not being in $PATH.
+            # Should this be handled elsewhere?
+            # YES.
+            set output_file "./[file rootname [file tail $prog]].exe"
+            # This is the only place where we care if an executable was
+            # created or not.  If it was, dg.exp will try to run it.
+            catch { remote_file build delete $output_file }
+        }
+        "link" {
+            set compile_type "executable"
+            set output_file "./[file rootname [file tail $prog]].exe"
+        }
+        default {
+            perror "$do_what: not a valid dg-do keyword"
+            return ""
+        }
+    }
+
+    set select_compile "libphobos_target_compile"
+    set options ""
+    if { $extra_tool_flags != "" } {
+        lappend options "additional_flags=$extra_tool_flags"
+    }
+
+    set comp_output [$select_compile "$prog" "$output_file" "$compile_type" $options]
+
+    return [list $comp_output $output_file]
+}
+
+#
+# libphobos_init
+#
+
+proc libphobos_init { args } {
+    global env
+    global srcdir blddir objdir tool_root_dir
+    global exeext
+    global gdc gdcflags
+    global gdcpaths gdcldflags
+    global gluefile wrap_flags
+    global ld_library_path
+    global DEFAULT_DFLAGS
+
+    # If a testcase doesn't have special options, use these.
+    if ![info exists DEFAULT_DFLAGS] then {
+        set DEFAULT_DFLAGS ""
+    }
+
+    # By default, we assume we want to run program images.
+    global dg-do-what-default
+    if [isnative] {
+        set dg-do-what-default "run"
+    } else {
+        set dg-do-what-default "link"
+    }
+
+    # What arguments to pass to run program images.
+    global libphobos_run_args
+    set libphobos_run_args ""
+
+    # Default settings.
+    set blddir [lookfor_file [get_multilibs] libphobos]
+    set flags_file "${blddir}/testsuite/testsuite_flags"
+    set shlib_ext [get_shlib_extension]
+
+    set gdc [transform "gdc"]
+    set gdcflags "-fmessage-length=0"
+    set gdcpaths "-I${srcdir}"
+    set gdcldflags ""
+
+    if { [file exists $flags_file] } {
+        set gdc [exec sh $flags_file --gdc]
+        set gdcflags [exec sh $flags_file --gdcflags]
+        set gdcpaths [exec sh $flags_file --gdcpaths]
+        set gdcldflags [exec sh $flags_file --gdcldflags]
+    }
+
+    set exeext ""
+    if [info exists env(EXEEXT)] {
+        set exeext $env(EXEEXT)
+    }
+
+    # Compute what needs to be added to the existing LD_LIBRARY_PATH.
+    set ld_library_path ""
+
+    set gccdir [lookfor_file $tool_root_dir gcc/libgcc.a]
+    if {$gccdir != ""} {
+        set gccdir [file dirname $gccdir]
+        append ld_library_path ":${gccdir}"
+    }
+
+    if { [file exists "${blddir}/libdruntime/.libs/libgdruntime.${shlib_ext}"] } {
+        append ld_library_path ":${blddir}/libdruntime/.libs"
+    }
+
+    if { [file exists "${blddir}/src/.libs/libgphobos.${shlib_ext}"] } {
+        append ld_library_path ":${blddir}/src/.libs"
+    }
+
+    set_ld_library_path_env_vars
+
+    libphobos_maybe_build_wrapper "${objdir}/testglue.o"
+}
+
+#
+# libphobos_target_compile -- compile a source file.
+#
+
+proc libphobos_target_compile { source dest type options } {
+    global gdc gdcflags
+    global gdcpaths gdcldflags
+    global gluefile wrap_flags
+
+    lappend options "additional_flags=-fno-diagnostics-show-caret -fdiagnostics-color=never"
+
+    if { [target_info needs_status_wrapper] != "" && [info exists gluefile] } {
+        lappend options "libs=${gluefile}"
+        lappend options "ldflags=${wrap_flags}"
+    }
+
+    # Flag setting based on type argument.
+    if { $type == "executable" } {
+        # Link the support objects into executables.
+        lappend options "additional_flags=$gdcldflags"
+    }
+
+    # Set the compiler, only add D flags and paths if building D sources.
+    set gdc_final $gdc
+    if [regexp ".*\.d\$" $source] {
+        set gdc_final [concat $gdc_final $gdcflags]
+        set gdc_final [concat $gdc_final $gdcpaths]
+    }
+
+    lappend options "compiler=$gdc_final"
+    lappend options "timeout=[timeout_value]"
+
+    set options [dg-additional-files-options $options $source]
+    set comp_output [target_compile $source $dest $type $options]
+
+    return $comp_output
+}
diff --git a/libphobos/testsuite/libphobos.allocations/allocations.exp b/libphobos/testsuite/libphobos.allocations/allocations.exp
new file mode 100644
index 0000000..d744b74
--- /dev/null
+++ b/libphobos/testsuite/libphobos.allocations/allocations.exp
@@ -0,0 +1,29 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_lib libphobos-dg.exp
+
+# Initialize dg.
+dg-init
+
+# Gather a list of all tests.
+set tests [lsort [find $srcdir/$subdir *.d]]
+
+# Main loop.
+dg-runtest $tests "" $DEFAULT_DFLAGS
+
+# All done.
+dg-finish
diff --git a/libphobos/testsuite/libphobos.allocations/overflow_from_existing.d b/libphobos/testsuite/libphobos.allocations/overflow_from_existing.d
new file mode 100644
index 0000000..c41b29f
--- /dev/null
+++ b/libphobos/testsuite/libphobos.allocations/overflow_from_existing.d
@@ -0,0 +1,8 @@
+// { dg-shouldfail "Memory allocation failed" }
+// { dg-output "core.exception.OutOfMemoryError@.*: Memory allocation failed" }
+void main()
+{
+    void[] buffer;
+    buffer.length = 1;
+    buffer.length = size_t.max;
+}
diff --git a/libphobos/testsuite/libphobos.allocations/overflow_from_zero.d b/libphobos/testsuite/libphobos.allocations/overflow_from_zero.d
new file mode 100644
index 0000000..de48773
--- /dev/null
+++ b/libphobos/testsuite/libphobos.allocations/overflow_from_zero.d
@@ -0,0 +1,8 @@
+// { dg-shouldfail "Memory allocation failed" }
+// { dg-output "core.exception.OutOfMemoryError@.*: Memory allocation failed" }
+void main()
+{
+    void[] buffer;
+    buffer.length = 0;
+    buffer.length = size_t.max;
+}
diff --git a/libphobos/testsuite/libphobos.cycles/cycles.exp b/libphobos/testsuite/libphobos.cycles/cycles.exp
new file mode 100644
index 0000000..21529e4
--- /dev/null
+++ b/libphobos/testsuite/libphobos.cycles/cycles.exp
@@ -0,0 +1,53 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_lib libphobos-dg.exp
+
+set dg-output-text [list]
+
+# Arguments to pass to the test program, expected output, and return code.
+set cycle_test_list [list \
+    { ignore ""  0 } \
+    { abort "object.Error@.*: Cyclic dependency between module mod. and mod." 1 } \
+    { print "Cyclic dependency between module mod. and mod." 0 } \
+    { deprecate "Deprecation 16211 warning:" 0 } \
+]
+
+# Initialize dg.
+dg-init
+
+# Gather a list of all tests.
+set tests [lsort [find $srcdir/$subdir *.d]]
+
+# Main loop.
+foreach cycle_test $cycle_test_list {
+    # The set the argument to pass to the program.
+    set libphobos_run_args "--DRT-oncycle=[lindex $cycle_test 0]"
+
+    # Whether the program is expected to fail.
+    set expected_fail [lindex $cycle_test 2]
+
+    foreach test $tests {
+        set shouldfail $expected_fail
+        dg-test $test "" $DEFAULT_DFLAGS
+    }
+
+    set shouldfail 0
+    set libphobos_run_args ""
+}
+
+# All done.
+dg-finish
diff --git a/libphobos/testsuite/libphobos.cycles/mod1.d b/libphobos/testsuite/libphobos.cycles/mod1.d
new file mode 100644
index 0000000..22fd9ec
--- /dev/null
+++ b/libphobos/testsuite/libphobos.cycles/mod1.d
@@ -0,0 +1,9 @@
+// { dg-additional-sources "mod2.d mod3.d" }
+module mod1;
+import mod2;
+
+shared int x;
+shared static this()
+{
+    x = 1;
+}
diff --git a/libphobos/testsuite/libphobos.cycles/mod2.d b/libphobos/testsuite/libphobos.cycles/mod2.d
new file mode 100644
index 0000000..66ba819
--- /dev/null
+++ b/libphobos/testsuite/libphobos.cycles/mod2.d
@@ -0,0 +1,9 @@
+// { dg-additional-sources "mod1.d mod3.d" }
+module mod2;
+import mod1;
+import mod3;
+
+void main()
+{
+    // do nothing
+}
diff --git a/libphobos/testsuite/libphobos.cycles/mod3.d b/libphobos/testsuite/libphobos.cycles/mod3.d
new file mode 100644
index 0000000..3eff4a9
--- /dev/null
+++ b/libphobos/testsuite/libphobos.cycles/mod3.d
@@ -0,0 +1,9 @@
+// { dg-additional-sources "mod1.d mod2.d" }
+module mod3;
+import mod2;
+
+shared int x;
+shared static this()
+{
+    x = 3;
+}
diff --git a/libphobos/testsuite/libphobos.exceptions/chain.d b/libphobos/testsuite/libphobos.exceptions/chain.d
new file mode 100644
index 0000000..462ba24
--- /dev/null
+++ b/libphobos/testsuite/libphobos.exceptions/chain.d
@@ -0,0 +1,79 @@
+// Author: Ali Çehreli
+// See https://forum.dlang.org/post/o2n7f8$2p1t$1@digitalmars.com
+
+import core.stdc.stdio;
+
+class TestException : Exception
+{
+    this(string msg)
+    {
+        super(typeof(this).stringof~": "~msg);
+    }
+}
+
+class TestError : Error
+{
+    this(string msg)
+    {
+        super(typeof(this).stringof~": "~msg);
+    }
+}
+
+// Causes an exception chain where the node at index errorIndex is an
+// Error (others are all Exceptions).
+void causeExceptionChain(size_t chainLength, size_t errorIndex)
+{
+    void throws(size_t n)
+    {
+        scope (exit)
+        {
+            string msg = [ cast(char)('a'+n) ].idup;
+            if (n == errorIndex)
+            {
+                throw new TestError(msg);
+            }
+            else
+            {
+                throw new TestException(msg);
+            }
+        }
+
+        if (n != 0)
+        {
+            // Redundant 'return' keyword due to
+            // https://issues.dlang.org/show_bug.cgi?id=16960
+            return throws(n - 1);
+        }
+    }
+
+    throws(chainLength - 1);
+}
+
+void main()
+{
+    try
+    {
+        // -1 would mean "no Error in the chain". Change this to a
+        // number between 0 and 4 (inclusive) then you will realize
+        // that the Exception below will not be caught.
+        size_t errorIndex = 3;
+        causeExceptionChain(5, errorIndex);
+    }
+    catch (Error original)
+    {
+        printf("Caught\n");
+        string prefix = "";
+        for ({ size_t i; Throwable ex = original; } ex; ex = ex.next, ++i)
+        {
+            printf("%.*s%.*s\n", prefix.length, prefix.ptr, ex.msg.length, ex.msg.ptr);
+            prefix = prefix~" ";
+        }
+        printf("Bypassed chain was:\n");
+        prefix = "";
+        for ({ size_t i; Throwable ex = original.bypassedException; } ex; ex = ex.next, ++i)
+        {
+            printf("%.*s%.*s\n", prefix.length, prefix.ptr, ex.msg.length, ex.msg.ptr);
+            prefix = prefix~" ";
+        }
+    }
+}
diff --git a/libphobos/testsuite/libphobos.exceptions/exceptions.exp b/libphobos/testsuite/libphobos.exceptions/exceptions.exp
new file mode 100644
index 0000000..d744b74
--- /dev/null
+++ b/libphobos/testsuite/libphobos.exceptions/exceptions.exp
@@ -0,0 +1,29 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_lib libphobos-dg.exp
+
+# Initialize dg.
+dg-init
+
+# Gather a list of all tests.
+set tests [lsort [find $srcdir/$subdir *.d]]
+
+# Main loop.
+dg-runtest $tests "" $DEFAULT_DFLAGS
+
+# All done.
+dg-finish
diff --git a/libphobos/testsuite/libphobos.exceptions/invalid_memory_operation.d b/libphobos/testsuite/libphobos.exceptions/invalid_memory_operation.d
new file mode 100644
index 0000000..79660e9
--- /dev/null
+++ b/libphobos/testsuite/libphobos.exceptions/invalid_memory_operation.d
@@ -0,0 +1,14 @@
+// { dg-shouldfail "Invalid memory operation" }
+// { dg-output "core.exception.InvalidMemoryOperationError@.*: Invalid memory operation" }
+struct S
+{
+    ~this()
+    {
+        new int;
+    }
+}
+
+void main()
+{
+    new S;
+}
diff --git a/libphobos/testsuite/libphobos.exceptions/line_trace.d b/libphobos/testsuite/libphobos.exceptions/line_trace.d
new file mode 100644
index 0000000..7b75d3a
--- /dev/null
+++ b/libphobos/testsuite/libphobos.exceptions/line_trace.d
@@ -0,0 +1,19 @@
+// { dg-output "object.Exception@.*: exception" }
+void main()
+{
+    try
+    {
+        f1();
+    }
+    catch (Exception e)
+    {
+        import core.stdc.stdio;
+        auto str = e.toString();
+        printf("%.*s\n", str.length, str.ptr);
+    }
+}
+
+void f1()
+{
+    throw new Exception("exception");
+}
diff --git a/libphobos/testsuite/libphobos.exceptions/static_dtor.d b/libphobos/testsuite/libphobos.exceptions/static_dtor.d
new file mode 100644
index 0000000..37a49b4
--- /dev/null
+++ b/libphobos/testsuite/libphobos.exceptions/static_dtor.d
@@ -0,0 +1,16 @@
+// { dg-shouldfail "static_dtor_exception" }
+// { dg-output "object.Exception@.*: static_dtor_exception" }
+// https://issues.dlang.org/show_bug.cgi?id=16594
+import core.stdc.stdio;
+
+shared static ~this()
+{
+    __gshared int count;
+
+    if (count++) fprintf(stderr, "dtor_called_more_than_once");
+    else throw new Exception("static_dtor_exception");
+}
+
+void main()
+{
+}
diff --git a/libphobos/testsuite/libphobos.exceptions/stderr_msg.d b/libphobos/testsuite/libphobos.exceptions/stderr_msg.d
new file mode 100644
index 0000000..bd14cea
--- /dev/null
+++ b/libphobos/testsuite/libphobos.exceptions/stderr_msg.d
@@ -0,0 +1,6 @@
+// { dg-shouldfail "stderr_msg msg" }
+// { dg-output "object.Exception@.*: stderr_msg msg" }
+void main()
+{
+    throw new Exception("stderr_msg msg");
+}
diff --git a/libphobos/testsuite/libphobos.exceptions/unittest_assert.d b/libphobos/testsuite/libphobos.exceptions/unittest_assert.d
new file mode 100644
index 0000000..bb4f2c2
--- /dev/null
+++ b/libphobos/testsuite/libphobos.exceptions/unittest_assert.d
@@ -0,0 +1,11 @@
+// { dg-options "-funittest" }
+// { dg-shouldfail "unittest_assert msg" }
+// { dg-output "core.exception.AssertError@.*: unittest_assert msg" }
+unittest
+{
+    assert(0, "unittest_assert msg");
+}
+
+void main()
+{
+}
diff --git a/libphobos/testsuite/libphobos.exceptions/unknown_gc.d b/libphobos/testsuite/libphobos.exceptions/unknown_gc.d
new file mode 100644
index 0000000..eb95aee
--- /dev/null
+++ b/libphobos/testsuite/libphobos.exceptions/unknown_gc.d
@@ -0,0 +1,9 @@
+// { dg-require-effective-target shared }
+// { dg-options "-shared-libphobos" }
+// { dg-shouldfail "unknowngc" }
+// { dg-output "No GC was initialized, please recheck the name of the selected GC \\('unknowngc'\\)." }
+extern(C) __gshared string[] rt_options = [ "gcopt=gc:unknowngc" ];
+
+void main()
+{
+}
diff --git a/libphobos/testsuite/libphobos.init_fini/init_fini.exp b/libphobos/testsuite/libphobos.init_fini/init_fini.exp
new file mode 100644
index 0000000..d744b74
--- /dev/null
+++ b/libphobos/testsuite/libphobos.init_fini/init_fini.exp
@@ -0,0 +1,29 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_lib libphobos-dg.exp
+
+# Initialize dg.
+dg-init
+
+# Gather a list of all tests.
+set tests [lsort [find $srcdir/$subdir *.d]]
+
+# Main loop.
+dg-runtest $tests "" $DEFAULT_DFLAGS
+
+# All done.
+dg-finish
diff --git a/libphobos/testsuite/libphobos.init_fini/runtime_args.d b/libphobos/testsuite/libphobos.init_fini/runtime_args.d
new file mode 100644
index 0000000..07ebae2
--- /dev/null
+++ b/libphobos/testsuite/libphobos.init_fini/runtime_args.d
@@ -0,0 +1,13 @@
+// Bugzilla 11149 - Runtime.args no longer available in static constructors
+import core.runtime;
+
+shared static this()
+{
+    assert(Runtime.cArgs.argc > 0);
+    assert(Runtime.cArgs.argv !is null);
+    assert(Runtime.args.length > 0);
+}
+
+void main()
+{
+}
diff --git a/libphobos/testsuite/libphobos.init_fini/thread_join.d b/libphobos/testsuite/libphobos.init_fini/thread_join.d
new file mode 100644
index 0000000..a40cd5e
--- /dev/null
+++ b/libphobos/testsuite/libphobos.init_fini/thread_join.d
@@ -0,0 +1,18 @@
+// Bugzilla 11309 - std.concurrency: OwnerTerminated message doesn't work
+// We need to assure that the thread dtors of parent threads run before the thread dtors of the child threads.
+import core.thread, core.sync.semaphore;
+import core.stdc.stdio;
+
+__gshared Semaphore sem;
+
+static ~this()
+{
+    if (sem !is null) sem.notify();
+}
+
+void main()
+{
+    sem = new Semaphore;
+    auto thr = new Thread({assert(sem.wait(1.seconds));});
+    thr.start();
+}
diff --git a/libphobos/testsuite/libphobos.shared/finalize.d b/libphobos/testsuite/libphobos.shared/finalize.d
new file mode 100644
index 0000000..f31b818
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/finalize.d
@@ -0,0 +1,63 @@
+import core.runtime;
+import core.stdc.stdio;
+import core.stdc.string;
+import core.thread;
+import core.sys.posix.dlfcn;
+
+void runTest()
+{
+    Object obj;
+    obj = Object.factory("lib.MyFinalizer");
+    assert(obj.toString() == "lib.MyFinalizer");
+    obj = Object.factory("lib.MyFinalizerBig");
+    assert(obj.toString() == "lib.MyFinalizerBig");
+}
+
+class NoFinalize
+{
+    size_t _finalizeCounter;
+
+    ~this()
+    {
+        ++_finalizeCounter;
+    }
+}
+
+class NoFinalizeBig : NoFinalize
+{
+    ubyte[4096] _big = void;
+}
+
+extern (C) alias SetFinalizeCounter = void function(shared(size_t*));
+
+void main(string[] args)
+{
+    auto name = args[0] ~ '\0';
+    const pathlen = strrchr(name.ptr, '/') - name.ptr + 1;
+    name = name[0 .. pathlen] ~ "lib.so";
+
+    auto h = Runtime.loadLibrary(name);
+    assert(h !is null);
+
+    auto nf1 = new NoFinalize;
+    auto nf2 = new NoFinalizeBig;
+
+    shared size_t finalizeCounter;
+    auto setFinalizeCounter = cast(SetFinalizeCounter)dlsym(h, "setFinalizeCounter");
+    setFinalizeCounter(&finalizeCounter);
+
+    runTest();
+    auto thr = new Thread(&runTest);
+    thr.start();
+    thr.join();
+
+    auto r = Runtime.unloadLibrary(h);
+    if (!r)
+        assert(0);
+    if (finalizeCounter != 4)
+        assert(0);
+    if (nf1._finalizeCounter)
+        assert(0);
+    if (nf2._finalizeCounter)
+        assert(0);
+}
diff --git a/libphobos/testsuite/libphobos.shared/host.c b/libphobos/testsuite/libphobos.shared/host.c
new file mode 100644
index 0000000..81e896a
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/host.c
@@ -0,0 +1,60 @@
+#include <stdlib.h>
+#include <string.h>
+#include <dlfcn.h>
+#include <assert.h>
+
+int main(int argc, char* argv[])
+{
+#if defined(__FreeBSD__)
+    // workaround for Bugzilla 14824
+    void *druntime = dlopen(argv[1], RTLD_LAZY); // load druntime
+    assert(druntime);
+#endif
+
+    const size_t pathlen = strrchr(argv[0], '/') - argv[0] + 1;
+    char *name = malloc(pathlen + sizeof("plugin1.so"));
+    memcpy(name, argv[0], pathlen);
+    memcpy(name+pathlen, "plugin1.so", sizeof("plugin1.so"));
+
+    void* plugin1 = dlopen(name, RTLD_LAZY);
+    name[pathlen + sizeof("plugin1.so") - 5] = '2';
+    void* plugin2 = dlopen(name, RTLD_LAZY);
+
+    int (*plugin1_init)() = dlsym(plugin1, "plugin_init");
+    int (*plugin1_term)() = dlsym(plugin1, "plugin_term");
+    int (*runTests1)() = dlsym(plugin1, "runTests");
+    int (*plugin2_init)() = dlsym(plugin2, "plugin_init");
+    int (*plugin2_term)() = dlsym(plugin2, "plugin_term");
+    int (*runTests2)() = dlsym(plugin2, "runTests");
+    assert(plugin1_init());
+    assert(runTests1());
+    assert(plugin2_init());
+    assert(runTests2());
+
+    assert(plugin1_term());
+    assert(dlclose(plugin1) == 0);
+    assert(runTests2());
+
+    name[pathlen + sizeof("plugin1.so") - 5] = '1';
+    plugin1 = dlopen(name, RTLD_LAZY);
+    plugin1_init = dlsym(plugin1, "plugin_init");
+    plugin1_term = dlsym(plugin1, "plugin_term");
+    runTests1 = dlsym(plugin1, "runTests");
+    assert(plugin1_init());
+    assert(runTests1());
+    assert(runTests2());
+
+    assert(plugin2_term());
+    assert(dlclose(plugin2) == 0);
+    assert(runTests1());
+
+    assert(plugin1_term());
+    assert(dlclose(plugin1) == 0);
+
+    free(name);
+
+#if defined(__FreeBSD__)
+    dlclose(druntime);
+#endif
+    return EXIT_SUCCESS;
+}
diff --git a/libphobos/testsuite/libphobos.shared/lib.d b/libphobos/testsuite/libphobos.shared/lib.d
new file mode 100644
index 0000000..0e4eb44
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/lib.d
@@ -0,0 +1,133 @@
+module lib;
+
+// test EH
+void throwException()
+{
+    throw new Exception(null);
+}
+
+Exception collectException(void delegate() dg)
+{
+    try
+        dg();
+    catch (Exception e)
+        return e;
+    return null;
+}
+
+// test GC
+__gshared Object root;
+void alloc() { root = new Object(); }
+void access() { assert(root.toString() !is null); } // vtbl call will fail if finalized
+void free() { root = null; }
+
+Object tls_root;
+void tls_alloc() { tls_root = new Object(); }
+void tls_access() { assert(tls_root.toString() !is null); } // vtbl call will fail if finalized
+void tls_free() { tls_root = null; }
+
+void stack(alias func)()
+{
+    // allocate some extra stack space to not keep references to GC memory on the scanned stack
+    ubyte[1024] buf = void;
+    func();
+}
+
+void testGC()
+{
+    import core.memory;
+
+    stack!alloc();
+    stack!tls_alloc();
+    stack!access();
+    stack!tls_access();
+    GC.collect();
+    stack!tls_access();
+    stack!access();
+    stack!tls_free();
+    stack!free();
+}
+
+// test Init
+import core.atomic : atomicOp;
+shared uint shared_static_ctor, shared_static_dtor, static_ctor, static_dtor;
+shared static this() { if (atomicOp!"+="(shared_static_ctor, 1) != 1) assert(0); }
+shared static ~this() { if (atomicOp!"+="(shared_static_dtor, 1) != 1) assert(0); }
+static this() { atomicOp!"+="(static_ctor, 1); }
+static ~this() { atomicOp!"+="(static_dtor, 1); }
+
+extern(C) int runTests()
+{
+    try
+        runTestsImpl();
+    catch (Throwable)
+        return 0;
+    return 1;
+}
+
+void runTestsImpl()
+{
+    import core.thread;
+
+    bool passed;
+    try
+        throwException();
+    catch (Exception e)
+        passed = true;
+    assert(passed);
+    assert(collectException({throwException();}) !is null);
+
+    testGC();
+
+    assert(shared_static_ctor == 1);
+    assert(static_ctor == 1);
+    static void run()
+    {
+        assert(static_ctor == 2);
+        assert(shared_static_ctor == 1);
+        testGC();
+    }
+    auto thr = new Thread(&run);
+    thr.start();
+    thr.join();
+    assert(static_dtor == 1);
+
+    passed = false;
+    foreach (m; ModuleInfo)
+        if (m.name == "lib") passed = true;
+    assert(passed);
+}
+
+// Provide a way to initialize D from C programs that are D agnostic.
+import core.runtime : rt_init, rt_term;
+
+extern(C) int lib_init()
+{
+    return rt_init();
+}
+
+extern(C) int lib_term()
+{
+    return rt_term();
+}
+
+shared size_t* _finalizeCounter;
+
+class MyFinalizer
+{
+    ~this()
+    {
+        import core.atomic;
+        atomicOp!"+="(*_finalizeCounter, 1);
+    }
+}
+
+class MyFinalizerBig : MyFinalizer
+{
+    ubyte[4096] _big = void;
+}
+
+extern(C) void setFinalizeCounter(shared(size_t)* p)
+{
+    _finalizeCounter = p;
+}
diff --git a/libphobos/testsuite/libphobos.shared/lib_13414.d b/libphobos/testsuite/libphobos.shared/lib_13414.d
new file mode 100644
index 0000000..2859438
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/lib_13414.d
@@ -0,0 +1,4 @@
+shared void function() sharedStaticDtorHook;
+shared void function() staticDtorHook;
+shared static ~this() { sharedStaticDtorHook(); }
+static ~this() { staticDtorHook(); }
diff --git a/libphobos/testsuite/libphobos.shared/liblinkdep.d b/libphobos/testsuite/libphobos.shared/liblinkdep.d
new file mode 100644
index 0000000..c2d2cc6
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/liblinkdep.d
@@ -0,0 +1,6 @@
+import lib;
+
+extern(C) int runDepTests()
+{
+    return runTests();
+}
diff --git a/libphobos/testsuite/libphobos.shared/libloaddep.d b/libphobos/testsuite/libphobos.shared/libloaddep.d
new file mode 100644
index 0000000..93a2dab
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/libloaddep.d
@@ -0,0 +1,13 @@
+import core.runtime, core.sys.posix.dlfcn;
+
+extern(C) alias RunTests = int function();
+
+extern(C) int runDepTests(const char* name)
+{
+    auto h = rt_loadLibrary(name);
+    if (h is null) return false;
+    auto runTests = cast(RunTests).dlsym(h, "runTests");
+    assert(runTests !is null);
+    if (!runTests()) return false;
+    return rt_unloadLibrary(h);
+}
diff --git a/libphobos/testsuite/libphobos.shared/link.d b/libphobos/testsuite/libphobos.shared/link.d
new file mode 100644
index 0000000..433da66
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/link.d
@@ -0,0 +1,64 @@
+import lib;
+
+void testEH()
+{
+    bool passed;
+    try
+        lib.throwException();
+    catch (Exception e)
+        passed = true;
+    assert(passed); passed = false;
+
+    assert(lib.collectException({throw new Exception(null);}) !is null);
+    assert(lib.collectException({lib.throwException();}) !is null);
+}
+
+void testGC()
+{
+    import core.memory;
+    lib.alloc();
+    lib.tls_alloc();
+    lib.access();
+    lib.tls_access();
+    GC.collect();
+    lib.tls_access();
+    lib.access();
+    lib.tls_free();
+    lib.free();
+}
+
+import core.atomic : atomicOp;
+shared static this() { assert(lib.shared_static_ctor == 1); }
+shared static ~this() { assert(lib.shared_static_dtor == 0); }
+shared uint static_ctor, static_dtor;
+static this() { assert(lib.static_ctor == atomicOp!"+="(static_ctor, 1)); }
+static ~this() { assert(lib.static_dtor + 1 == atomicOp!"+="(static_dtor, 1)); }
+
+void testInit()
+{
+    import core.thread;
+
+    assert(lib.static_ctor == 1);
+    assert(lib.static_dtor == 0);
+    static void foo()
+    {
+        assert(lib.shared_static_ctor == 1);
+        assert(lib.shared_static_dtor == 0);
+        assert(lib.static_ctor == 2);
+        assert(lib.static_dtor == 0);
+    }
+    auto thr = new Thread(&foo);
+    thr.start();
+    assert(thr.join() is null);
+    assert(lib.shared_static_ctor == 1);
+    assert(lib.shared_static_dtor == 0);
+    assert(lib.static_ctor == 2);
+    assert(lib.static_dtor == 1);
+}
+
+void main()
+{
+    testEH();
+    testGC();
+    testInit();
+}
diff --git a/libphobos/testsuite/libphobos.shared/linkD.c b/libphobos/testsuite/libphobos.shared/linkD.c
new file mode 100644
index 0000000..657c9e8
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/linkD.c
@@ -0,0 +1,14 @@
+#include <stdlib.h>
+#include <assert.h>
+
+extern int runTests(void);
+extern int lib_init(void);
+extern int lib_term(void);
+
+int main(int argc, char* argv[])
+{
+    if (!lib_init()) return EXIT_SUCCESS;
+    const int res = runTests() ? EXIT_SUCCESS : EXIT_FAILURE;
+    if (!lib_term()) return EXIT_FAILURE;
+    return res;
+}
diff --git a/libphobos/testsuite/libphobos.shared/linkDR.c b/libphobos/testsuite/libphobos.shared/linkDR.c
new file mode 100644
index 0000000..924709c
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/linkDR.c
@@ -0,0 +1,28 @@
+#include <stdlib.h>
+#include <string.h>
+#include <dlfcn.h>
+#include <assert.h>
+
+extern void* rt_loadLibrary(const char*);
+extern int rt_unloadLibrary(void*);
+extern int rt_init(void);
+extern int rt_term(void);
+
+int main(int argc, char* argv[])
+{
+    if (!rt_init()) return EXIT_FAILURE;
+    const size_t pathlen = strrchr(argv[0], '/') - argv[0] + 1;
+    char *name = malloc(pathlen + sizeof("lib.so"));
+    memcpy(name, argv[0], pathlen);
+    memcpy(name+pathlen, "lib.so", sizeof("lib.so"));
+
+    void *dlib = rt_loadLibrary(name);
+    free(name);
+    assert(dlib);
+
+    int (*runTests)(void) = dlsym(dlib, "runTests");
+    assert(runTests());
+    assert(rt_unloadLibrary(dlib));
+    if (!rt_term()) return EXIT_FAILURE;
+    return EXIT_SUCCESS;
+}
diff --git a/libphobos/testsuite/libphobos.shared/link_linkdep.d b/libphobos/testsuite/libphobos.shared/link_linkdep.d
new file mode 100644
index 0000000..ca72e7e
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/link_linkdep.d
@@ -0,0 +1,6 @@
+import liblinkdep;
+
+void main()
+{
+    runDepTests();
+}
diff --git a/libphobos/testsuite/libphobos.shared/link_loaddep.d b/libphobos/testsuite/libphobos.shared/link_loaddep.d
new file mode 100644
index 0000000..8e0c58e
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/link_loaddep.d
@@ -0,0 +1,7 @@
+import libloaddep;
+
+void main(string[] args)
+{
+    auto libname = args[0][0..$-"link_loaddep".length] ~ "lib.so\0";
+    runDepTests(libname.ptr);
+}
diff --git a/libphobos/testsuite/libphobos.shared/link_mod_collision.d b/libphobos/testsuite/libphobos.shared/link_mod_collision.d
new file mode 100644
index 0000000..9c3d1c7
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/link_mod_collision.d
@@ -0,0 +1,5 @@
+module lib; // module collides with lib.so
+
+void main()
+{
+}
diff --git a/libphobos/testsuite/libphobos.shared/load.d b/libphobos/testsuite/libphobos.shared/load.d
new file mode 100644
index 0000000..8c13f51
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/load.d
@@ -0,0 +1,147 @@
+import core.runtime;
+import core.stdc.stdio;
+import core.stdc.string;
+import core.thread;
+
+version (linux) import core.sys.linux.dlfcn;
+else version (FreeBSD) import core.sys.freebsd.dlfcn;
+else version (NetBSD) import core.sys.netbsd.dlfcn;
+else static assert(0, "unimplemented");
+
+void loadSym(T)(void* handle, ref T val, const char* mangle)
+{
+    val = cast(T).dlsym(handle, mangle);
+}
+
+void* openLib(string s)
+{
+    auto h = Runtime.loadLibrary(s);
+    assert(h !is null);
+
+    loadSym(h, libThrowException, "_D3lib14throwExceptionFZv");
+    loadSym(h, libCollectException, "_D3lib16collectExceptionFDFZvZC9Exception");
+
+    loadSym(h, libAlloc, "_D3lib5allocFZv");
+    loadSym(h, libTlsAlloc, "_D3lib9tls_allocFZv");
+    loadSym(h, libAccess, "_D3lib6accessFZv");
+    loadSym(h, libTlsAccess, "_D3lib10tls_accessFZv");
+    loadSym(h, libFree, "_D3lib4freeFZv");
+    loadSym(h, libTlsFree, "_D3lib8tls_freeFZv");
+
+    loadSym(h, libSharedStaticCtor, "_D3lib18shared_static_ctorOk");
+    loadSym(h, libSharedStaticDtor, "_D3lib18shared_static_dtorOk");
+    loadSym(h, libStaticCtor, "_D3lib11static_ctorOk");
+    loadSym(h, libStaticDtor, "_D3lib11static_dtorOk");
+
+    return h;
+}
+
+void closeLib(void* h)
+{
+    Runtime.unloadLibrary(h);
+}
+
+__gshared
+{
+    void function() libThrowException;
+    Exception function(void delegate()) libCollectException;
+
+    void function() libAlloc;
+    void function() libTlsAlloc;
+    void function() libAccess;
+    void function() libTlsAccess;
+    void function() libFree;
+    void function() libTlsFree;
+
+    shared uint* libSharedStaticCtor;
+    shared uint* libSharedStaticDtor;
+    shared uint* libStaticCtor;
+    shared uint* libStaticDtor;
+}
+
+void testEH()
+{
+    bool passed;
+    try
+        libThrowException();
+    catch (Exception e)
+        passed = true;
+    assert(passed); passed = false;
+
+    assert(libCollectException({throw new Exception(null);}) !is null);
+    assert(libCollectException({libThrowException();}) !is null);
+}
+
+void testGC()
+{
+    import core.memory;
+    libAlloc();
+    libTlsAlloc();
+    libAccess();
+    libTlsAccess();
+    GC.collect();
+    libTlsAccess();
+    libAccess();
+    libTlsFree();
+    libFree();
+}
+
+void testInit()
+{
+
+    assert(*libStaticCtor == 1);
+    assert(*libStaticDtor == 0);
+    static void run()
+    {
+        assert(*libSharedStaticCtor == 1);
+        assert(*libSharedStaticDtor == 0);
+        assert(*libStaticCtor == 2);
+        assert(*libStaticDtor == 0);
+    }
+    auto thr = new Thread(&run);
+    thr.start();
+    thr.join();
+    assert(*libSharedStaticCtor == 1);
+    assert(*libSharedStaticDtor == 0);
+    assert(*libStaticCtor == 2);
+    assert(*libStaticDtor == 1);
+}
+
+const(ModuleInfo)* findModuleInfo(string name)
+{
+    foreach (m; ModuleInfo)
+        if (m.name == name) return m;
+    return null;
+}
+
+void runTests(string libName)
+{
+    assert(findModuleInfo("lib") is null);
+    auto handle = openLib(libName);
+    assert(findModuleInfo("lib") !is null);
+
+    testEH();
+    testGC();
+    testInit();
+
+    closeLib(handle);
+    assert(findModuleInfo("lib") is null);
+}
+
+void main(string[] args)
+{
+    auto name = args[0] ~ '\0';
+    const pathlen = strrchr(name.ptr, '/') - name.ptr + 1;
+    name = name[0 .. pathlen] ~ "lib.so";
+
+    runTests(name);
+
+    // lib is no longer resident
+    name ~= '\0';
+    assert(.dlopen(name.ptr, RTLD_LAZY | RTLD_NOLOAD) is null);
+    name = name[0 .. $-1];
+
+    auto thr = new Thread({runTests(name);});
+    thr.start();
+    thr.join();
+}
diff --git a/libphobos/testsuite/libphobos.shared/loadDR.c b/libphobos/testsuite/libphobos.shared/loadDR.c
new file mode 100644
index 0000000..08508cbc
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/loadDR.c
@@ -0,0 +1,39 @@
+#include <stdlib.h>
+#include <string.h>
+#include <dlfcn.h>
+#include <assert.h>
+
+int main(int argc, char* argv[])
+{
+    if (argc != 2)
+        return EXIT_FAILURE;
+    void *h = dlopen(argv[1], RTLD_LAZY); // load druntime
+    assert(h != NULL);
+
+    int (*rt_init)(void) = dlsym(h, "rt_init");
+    int (*rt_term)(void) = dlsym(h, "rt_term");
+    void* (*rt_loadLibrary)(const char*) = dlsym(h, "rt_loadLibrary");
+    int (*rt_unloadLibrary)(void*) = dlsym(h, "rt_unloadLibrary");
+
+    int res = EXIT_FAILURE;
+    if (!rt_init()) goto Lexit;
+
+    const size_t pathlen = strrchr(argv[0], '/') - argv[0] + 1;
+    char *name = malloc(pathlen + sizeof("lib.so"));
+    memcpy(name, argv[0], pathlen);
+    memcpy(name+pathlen, "lib.so", sizeof("lib.so"));
+
+    void *dlib = rt_loadLibrary(name);
+    free(name);
+    assert(dlib);
+
+    int (*runTests)(void) = dlsym(dlib, "runTests");
+    assert(runTests());
+    assert(rt_unloadLibrary(dlib));
+
+    if (rt_term()) res = EXIT_SUCCESS;
+
+Lexit:
+    assert(dlclose(h) == 0);
+    return res;
+}
diff --git a/libphobos/testsuite/libphobos.shared/load_13414.d b/libphobos/testsuite/libphobos.shared/load_13414.d
new file mode 100644
index 0000000..f7cbf45
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/load_13414.d
@@ -0,0 +1,30 @@
+import core.runtime;
+import core.atomic;
+import core.stdc.string;
+import core.sys.posix.dlfcn;
+
+shared uint tlsDtor, dtor;
+void staticDtorHook() { atomicOp!"+="(tlsDtor, 1); }
+void sharedStaticDtorHook() { atomicOp!"+="(dtor, 1); }
+
+void runTest(string name)
+{
+    auto h = Runtime.loadLibrary(name);
+    assert(h !is null);
+
+    *cast(void function()*).dlsym(h, "_D9lib_1341414staticDtorHookOPFZv") = &staticDtorHook;
+    *cast(void function()*).dlsym(h, "_D9lib_1341420sharedStaticDtorHookOPFZv") = &sharedStaticDtorHook;
+
+    Runtime.unloadLibrary(h);
+    assert(tlsDtor == 1);
+    assert(dtor == 1);
+}
+
+void main(string[] args)
+{
+    auto name = args[0] ~ '\0';
+    const pathlen = strrchr(name.ptr, '/') - name.ptr + 1;
+    name = name[0 .. pathlen] ~ "lib_13414.so";
+
+    runTest(name);
+}
diff --git a/libphobos/testsuite/libphobos.shared/load_linkdep.d b/libphobos/testsuite/libphobos.shared/load_linkdep.d
new file mode 100644
index 0000000..5f5dcf2
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/load_linkdep.d
@@ -0,0 +1,18 @@
+import core.runtime;
+import core.stdc.string;
+import core.sys.posix.dlfcn;
+
+extern(C) alias RunDepTests = int function();
+
+void main(string[] args)
+{
+    auto name = args[0] ~ '\0';
+    const pathlen = strrchr(name.ptr, '/') - name.ptr + 1;
+    name = name[0 .. pathlen] ~ "liblinkdep.so";
+
+    auto h = Runtime.loadLibrary(name);
+    assert(h);
+    auto runDepTests = cast(RunDepTests)dlsym(h, "runDepTests");
+    assert(runDepTests());
+    assert(Runtime.unloadLibrary(h));
+}
diff --git a/libphobos/testsuite/libphobos.shared/load_loaddep.d b/libphobos/testsuite/libphobos.shared/load_loaddep.d
new file mode 100644
index 0000000..c189683e
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/load_loaddep.d
@@ -0,0 +1,17 @@
+import core.runtime;
+import core.stdc.string;
+import core.sys.posix.dlfcn;
+
+extern(C) alias RunDepTests = int function(const char*);
+
+void main(string[] args)
+{
+    auto name = args[0] ~ '\0';
+    const pathlen = strrchr(name.ptr, '/') - name.ptr + 1;
+    auto root = name[0 .. pathlen];
+    auto libloaddep = root ~ "libloaddep.so";
+    auto h = Runtime.loadLibrary(libloaddep);
+    auto runDepTests = cast(RunDepTests)dlsym(h, "runDepTests");
+    assert(runDepTests((root ~ "lib.so\0").ptr));
+    assert(Runtime.unloadLibrary(h));
+}
diff --git a/libphobos/testsuite/libphobos.shared/load_mod_collision.d b/libphobos/testsuite/libphobos.shared/load_mod_collision.d
new file mode 100644
index 0000000..64243d4
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/load_mod_collision.d
@@ -0,0 +1,14 @@
+module lib; // module collides with lib.so
+
+import core.runtime;
+import core.stdc.stdio;
+import core.stdc.string;
+import core.sys.posix.dlfcn;
+
+void main(string[] args)
+{
+    auto name = args[0] ~ '\0';
+    const pathlen = strrchr(name.ptr, '/') - name.ptr + 1;
+    name = name[0 .. pathlen] ~ "lib.so";
+    auto lib = Runtime.loadLibrary(name);
+}
diff --git a/libphobos/testsuite/libphobos.shared/plugin.d b/libphobos/testsuite/libphobos.shared/plugin.d
new file mode 100644
index 0000000..74d6601
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/plugin.d
@@ -0,0 +1,73 @@
+import core.thread, core.memory, core.atomic;
+
+// test init
+shared uint gctor, gdtor, tctor, tdtor;
+shared static this() { if (atomicOp!"+="(gctor, 1) != 1) assert(0); }
+shared static ~this() { if (atomicOp!"+="(gdtor, 1) != 1) assert(0); }
+static this() { atomicOp!"+="(tctor, 1); }
+static ~this() { atomicOp!"+="(tdtor, 1); }
+
+// test GC
+__gshared Object root;
+void alloc() { root = new Object(); }
+void access() { assert(root.toString() !is null); } // vtbl call will fail if finalized
+void free() { root = null; }
+
+Object tls_root;
+void tls_alloc() { tls_root = new Object(); }
+void tls_access() { assert(tls_root.toString() !is null); } // vtbl call will fail if finalized
+void tls_free() { tls_root = null; }
+
+void stack(alias func)()
+{
+    // allocate some extra stack space to not keep references to GC memory on the scanned stack
+    ubyte[1024] buf = void;
+    func();
+}
+
+void testGC()
+{
+    import core.memory;
+
+    stack!alloc();
+    stack!tls_alloc();
+    stack!access();
+    stack!tls_access();
+    GC.collect();
+    stack!tls_access();
+    stack!access();
+    stack!tls_free();
+    stack!free();
+}
+
+extern(C) int runTests()
+{
+    try
+    {
+        assert(atomicLoad!(MemoryOrder.acq)(gctor) == 1);
+        assert(atomicLoad!(MemoryOrder.acq)(gdtor) == 0);
+        assert(atomicLoad!(MemoryOrder.acq)(tctor) >= 1);
+        assert(atomicLoad!(MemoryOrder.acq)(tdtor) >= 0);
+        // test some runtime functionality
+        testGC();
+        new Thread(&testGC).start.join;
+    }
+    catch (Throwable)
+    {
+        return false;
+    }
+    return true;
+}
+
+// Provide a way to initialize D from C programs that are D agnostic.
+import core.runtime : rt_init, rt_term;
+
+extern(C) int plugin_init()
+{
+    return rt_init();
+}
+
+extern(C) int plugin_term()
+{
+    return rt_term();
+}
diff --git a/libphobos/testsuite/libphobos.shared/shared.exp b/libphobos/testsuite/libphobos.shared/shared.exp
new file mode 100644
index 0000000..5555b3b
--- /dev/null
+++ b/libphobos/testsuite/libphobos.shared/shared.exp
@@ -0,0 +1,108 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_lib libphobos-dg.exp
+
+# Immediately exit if target doesn't support shared.
+if { ![is-effective-target shared] } {
+    return
+}
+
+# If a testcase doesn't have special options, use these.
+if ![info exists DEFAULT_CFLAGS] then {
+    set DEFAULT_CFLAGS "-g"
+}
+
+#
+# Build all shared libraries, used as dependencies for other tests.
+#
+
+proc shared_library { source destfile options } {
+    global DEFAULT_DFLAGS
+    global all_libraries
+
+    # Compiling with -fno-gnu-unique as tests call dlopen/dlclose multiple times on the same library.
+    lappend options "additional_flags=$DEFAULT_DFLAGS -fno-gnu-unique -fpic -shared -shared-libphobos"
+
+    set comp_output [libphobos_target_compile "$source" "$destfile" "executable" $options]
+    if ![ string match "" $comp_output ] {
+        fail "libphobos.shared/[file tail $source]"
+        verbose -log $comp_output
+        return 1
+    }
+
+    lappend all_libraries $destfile
+}
+
+# lib.so
+shared_library "$srcdir/$subdir/lib.d" "lib.so" ""
+
+# liblinkdep.so
+shared_library "$srcdir/$subdir/liblinkdep.d" "liblinkdep.so" \
+        [list "additional_flags=-I$srcdir/$subdir lib.so"]
+
+# libloaddep.so
+shared_library "$srcdir/$subdir/libloaddep.d" "libloaddep.so" ""
+
+# lib_13414.so
+shared_library "$srcdir/$subdir/lib_13414.d" "lib_13414.so" ""
+
+# plugin.so
+shared_library "$srcdir/$subdir/plugin.d" "plugin1.so" ""
+shared_library "$srcdir/$subdir/plugin.d" "plugin2.so" ""
+
+# Initialize dg.
+dg-init
+
+# Main loop.
+dg-test "$srcdir/$subdir/link.d" "-I$srcdir/$subdir lib.so -shared-libphobos" \
+        "$DEFAULT_DFLAGS"
+
+dg-test "$srcdir/$subdir/link_linkdep.d" \
+        "-I$srcdir/$subdir liblinkdep.so lib.so -shared-libphobos" \
+        "$DEFAULT_DFLAGS"
+
+dg-test "$srcdir/$subdir/link_loaddep.d" \
+        "-I$srcdir/$subdir libloaddep.so -shared-libphobos" "$DEFAULT_DFLAGS"
+
+# dlopen() tests.
+if [is-effective-target dlopen] {
+    dg-test "$srcdir/$subdir/load.d" "-shared-libphobos -ldl" "$DEFAULT_DFLAGS"
+    dg-test "$srcdir/$subdir/load_linkdep.d" "-shared-libphobos -ldl" "$DEFAULT_DFLAGS"
+    dg-test "$srcdir/$subdir/load_loaddep.d" "-shared-libphobos -ldl" "$DEFAULT_DFLAGS"
+    dg-test "$srcdir/$subdir/load_13414.d" "-shared-libphobos -ldl" "$DEFAULT_DFLAGS"
+    dg-test "$srcdir/$subdir/finalize.d" "-shared-libphobos -ldl" "$DEFAULT_DFLAGS"
+}
+
+# C program link tests.
+if { [is-effective-target dlopen] && [is-effective-target pthread] } {
+    dg-test "$srcdir/$subdir/linkD.c" "lib.so -ldl -pthread" "$DEFAULT_CFLAGS"
+    dg-test "$srcdir/$subdir/linkDR.c" "-shared-libphobos -ldl -pthread" "$DEFAULT_CFLAGS"
+    dg-test "$srcdir/$subdir/host.c" "-ldl -pthread" "$DEFAULT_CFLAGS"
+
+    # Test requires a command line argument to be passed to the program.
+    set libphobos_run_args "$objdir/../src/.libs/libgphobos.so"
+    dg-test "$srcdir/$subdir/loadDR.c" "-ldl -pthread -g" "$DEFAULT_CFLAGS"
+    set libphobos_run_args ""
+}
+
+# All done.
+dg-finish
+
+# Remove all libraries built before running tests.
+foreach lib $all_libraries {
+    catch "file delete -force -- $lib"
+}
diff --git a/libphobos/testsuite/libphobos.thread/fiber_guard_page.d b/libphobos/testsuite/libphobos.thread/fiber_guard_page.d
new file mode 100644
index 0000000..33a7459
--- /dev/null
+++ b/libphobos/testsuite/libphobos.thread/fiber_guard_page.d
@@ -0,0 +1,47 @@
+// { dg-shouldfail "segv or bus error" }
+import core.thread;
+import core.sys.posix.sys.mman;
+
+// this should be true for most architectures
+// (taken from core.thread)
+version = StackGrowsDown;
+
+enum stackSize = 4096;
+
+// Simple method that causes a stack overflow
+void stackMethod()
+{
+    // Over the stack size, so it overflows the stack
+    int[stackSize/int.sizeof+100] x;
+}
+
+void main()
+{
+    auto test_fiber = new Fiber(&stackMethod, stackSize);
+
+    // allocate a page below (above) the fiber's stack to make stack overflows possible (w/o segfaulting)
+    version (StackGrowsDown)
+    {
+        static assert(__traits(identifier, test_fiber.tupleof[8]) == "m_pmem");
+        auto stackBottom = test_fiber.tupleof[8];
+        auto p = mmap(stackBottom - 8 * stackSize, 8 * stackSize,
+                      PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
+        assert(p !is null, "failed to allocate page");
+    }
+    else
+    {
+        auto m_sz = test_fiber.tupleof[7];
+        auto m_pmem = test_fiber.tupleof[8];
+        static assert(__traits(identifier, test_fiber.tupleof[7]) == "m_size");
+        static assert(__traits(identifier, test_fiber.tupleof[8]) == "m_pmem");
+
+        auto stackTop = m_pmem + m_sz;
+        auto p = mmap(stackTop, 8 * stackSize,
+                      PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
+        assert(p !is null, "failed to allocate page");
+    }
+
+    // the guard page should prevent a mem corruption by stack
+    // overflow and cause a segfault instead (or generate SIGBUS on *BSD flavors)
+    test_fiber.call();
+}
diff --git a/libphobos/testsuite/libphobos.thread/thread.exp b/libphobos/testsuite/libphobos.thread/thread.exp
new file mode 100644
index 0000000..d744b74
--- /dev/null
+++ b/libphobos/testsuite/libphobos.thread/thread.exp
@@ -0,0 +1,29 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_lib libphobos-dg.exp
+
+# Initialize dg.
+dg-init
+
+# Gather a list of all tests.
+set tests [lsort [find $srcdir/$subdir *.d]]
+
+# Main loop.
+dg-runtest $tests "" $DEFAULT_DFLAGS
+
+# All done.
+dg-finish
diff --git a/libphobos/testsuite/libphobos.typeinfo/comparison.d b/libphobos/testsuite/libphobos.typeinfo/comparison.d
new file mode 100644
index 0000000..a6719ba
--- /dev/null
+++ b/libphobos/testsuite/libphobos.typeinfo/comparison.d
@@ -0,0 +1,78 @@
+// https://github.com/dlang/druntime/pull/1781
+
+struct S
+{
+    int i;
+    static int comparisons;
+    int opCmp(const S s) const { comparisons++; return i - s.i; }
+}
+
+void testStructs()
+{
+    auto s1 = S(1);
+    auto s2 = S(2);
+    auto s3 = S(3);
+    auto s4 = S(4);
+
+    // Test lexicographical order
+
+    assert(s1 < s2 && s2 < s3);
+    assert([s1, s2, s3] < [s1, s3]);
+    assert([s1, s2] < [s1, s2, s3]);
+
+    // Test number of comparisons for nested types
+
+    S.comparisons = 0;
+    assert(s1 < s2);
+    assert(S.comparisons == 1);
+
+    S.comparisons = 0;
+    assert([s1, s2] < [s3, s4]);
+    assert(S.comparisons == 1);
+
+    S.comparisons = 0;
+    assert([[s1, s2]] < [[s3, s4]]);
+    assert(S.comparisons == 1);
+}
+
+class C
+{
+    this(int i) { this.i = i; }
+    int i;
+    static int comparisons;
+    override int opCmp(Object c) const { comparisons++; return i - (cast(C)c).i; }
+}
+
+void testClasses()
+{
+    auto c1 = new C(1);
+    auto c2 = new C(2);
+    auto c3 = new C(3);
+    auto c4 = new C(4);
+
+    // Test lexicographical order
+
+    assert(c1 < c2 && c2 < c3);
+    assert([c1, c2, c3] < [c1, c3]);
+    assert([c1, c2] < [c1, c2, c3]);
+
+    // Test number of comparisons for nested types
+
+    C.comparisons = 0;
+    assert(c1 < c2);
+    assert(C.comparisons == 1);
+
+    C.comparisons = 0;
+    assert([c1, c2] < [c3, c4]);
+    assert(C.comparisons == 1);
+
+    C.comparisons = 0;
+    assert([[c1, c2]] < [[c3, c4]]);
+    assert(C.comparisons == 1);
+}
+
+void main()
+{
+    testStructs();
+    testClasses();
+}
diff --git a/libphobos/testsuite/libphobos.typeinfo/typeinfo.exp b/libphobos/testsuite/libphobos.typeinfo/typeinfo.exp
new file mode 100644
index 0000000..d744b74
--- /dev/null
+++ b/libphobos/testsuite/libphobos.typeinfo/typeinfo.exp
@@ -0,0 +1,29 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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/>.
+
+load_lib libphobos-dg.exp
+
+# Initialize dg.
+dg-init
+
+# Gather a list of all tests.
+set tests [lsort [find $srcdir/$subdir *.d]]
+
+# Main loop.
+dg-runtest $tests "" $DEFAULT_DFLAGS
+
+# All done.
+dg-finish
diff --git a/libphobos/testsuite/libphobos.unittests/unittests.exp b/libphobos/testsuite/libphobos.unittests/unittests.exp
new file mode 100644
index 0000000..e68e630
--- /dev/null
+++ b/libphobos/testsuite/libphobos.unittests/unittests.exp
@@ -0,0 +1,53 @@
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Immediately exit if we can't run target executables.
+if { ![isnative] } {
+    return
+}
+
+proc unittest_list_modules { prog } {
+    # Running the test runner without arguments prints a list of all
+    # modules that have unittests compiled in.
+    set result [libphobos_load "$prog" "" ""]
+    return [lindex $result 1]
+}
+
+# Runs all unittests for each module compiled into the test program.
+proc unittest_run_tests { name prog } {
+    foreach module [unittest_list_modules $prog] {
+        set result [libphobos_load "$prog" "$module" ""]
+        set status [lindex $result 0]
+        $status "libphobos.unittests/$name/$module"
+    }
+}
+
+proc unittester { name prog } {
+    if [file exists $prog] {
+        unittest_run_tests $name $prog
+    }
+}
+
+# List of test runners.
+if [is-effective-target static] {
+    unittester "druntime/static" "$objdir/../libdruntime/unittest_static$exeext"
+    unittester "phobos/static" "$objdir/../src/unittest_static$exeext"
+}
+
+if [is-effective-target shared] {
+    unittester "druntime/shared" "$objdir/../libdruntime/unittest$exeext"
+    unittester "phobos/shared" "$objdir/../src/unittest$exeext"
+}
diff --git a/libphobos/testsuite/test_runner.d b/libphobos/testsuite/test_runner.d
new file mode 100644
index 0000000..c9a908a
--- /dev/null
+++ b/libphobos/testsuite/test_runner.d
@@ -0,0 +1,95 @@
+import core.runtime, core.time : MonoTime;
+import core.stdc.stdio;
+
+ModuleInfo* getModuleInfo(string name)
+{
+    foreach (m; ModuleInfo)
+        if (m.name == name) return m;
+    assert(0, "module '"~name~"' not found");
+}
+
+bool tester()
+{
+    return Runtime.args.length > 1 ? testModules() : printAll();
+}
+
+string mode;
+
+
+bool testModules()
+{
+    bool ret = true;
+    foreach(name; Runtime.args[1..$])
+    {
+        immutable pkg = ".package";
+        immutable pkgLen = pkg.length;
+
+        if (name.length > pkgLen && name[$ - pkgLen .. $] == pkg)
+            name = name[0 .. $ - pkgLen];
+
+        doTest(getModuleInfo(name), ret);
+    }
+
+    return ret;
+}
+
+bool printAll()
+{
+    foreach (m; ModuleInfo)
+    {
+        if (m.unitTest)
+        {
+            string name = m.name;
+            printf("%.*s\n", cast(int)name.length, name.ptr);
+        }
+    }
+    return true;
+}
+
+
+void doTest(ModuleInfo* moduleInfo, ref bool ret)
+{
+    if (auto fp = moduleInfo.unitTest)
+    {
+        auto name = moduleInfo.name;
+        try
+        {
+            immutable t0 = MonoTime.currTime;
+            fp();
+            printf("%.3fs PASS %.*s %.*s\n",
+                   (MonoTime.currTime - t0).total!"msecs" / 1000.0,
+                   cast(uint)mode.length, mode.ptr,
+                   cast(uint)name.length, name.ptr);
+        }
+        catch (Throwable e)
+        {
+            auto msg = e.toString();
+            printf("****** FAIL %.*s %.*s\n%.*s\n",
+                   cast(uint)mode.length, mode.ptr,
+                   cast(uint)name.length, name.ptr,
+                   cast(uint)msg.length, msg.ptr);
+            ret = false;
+        }
+    }
+}
+
+
+shared static this()
+{
+    version(D_Coverage)
+    {
+        import core.runtime : dmd_coverSetMerge;
+        dmd_coverSetMerge(true);
+    }
+    Runtime.moduleUnitTester = &tester;
+
+    debug mode = "debug";
+    else  mode =  "release";
+    static if ((void*).sizeof == 4) mode ~= "32";
+    else static if ((void*).sizeof == 8) mode ~= "64";
+    else static assert(0, "You must be from the future!");
+}
+
+void main()
+{
+}
diff --git a/libphobos/testsuite/testsuite_flags.in b/libphobos/testsuite/testsuite_flags.in
new file mode 100755
index 0000000..92cc436
--- /dev/null
+++ b/libphobos/testsuite/testsuite_flags.in
@@ -0,0 +1,52 @@
+#!/bin/sh
+
+#
+# This script computes the various flags needed to run D Phobos unittests.
+#
+
+# Print a message saying how this script is intended to be invoked
+print_usage() {
+    cat <<EOF
+Usage:
+    testsuite_flags --gdc
+		    --gdcflags
+		    --gdcpaths
+		    --gdcldflags
+
+EOF
+}
+
+# Establish configure-generated directory structure.
+BUILD_DIR=@libphobos_builddir@
+SRC_DIR=@libphobos_srcdir@
+query=$1
+
+case ${query} in
+    --gdc)
+      GDC="@GDC@"
+      echo ${GDC}
+      ;;
+    --gdcflags)
+      GDCFLAGS_default="-fmessage-length=0 -fno-show-column"
+      GDCFLAGS_config="@GDCFLAGSX@"
+      echo ${GDCFLAGS_default} ${GDCFLAGS_config}
+      ;;
+    --gdcpaths)
+      GDCPATHS_default="-nostdinc"
+      GDCPATHS_config="-B${BUILD_DIR}/src
+                       -I${BUILD_DIR}/libdruntime
+                       -I${SRC_DIR}/libdruntime"
+      echo ${GDCPATHS_default} ${GDCPATHS_config}
+      ;;
+    --gdcldflags)
+      GDCLDFLAGS="-B${BUILD_DIR}/src
+                  -L${BUILD_DIR}/libdruntime/.libs
+                  -L${BUILD_DIR}/src/.libs"
+      echo ${GDCLDFLAGS}
+      ;;
+    *)
+      print_usage
+      ;;
+esac
+
+exit 0