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* [gcc r12-6635] libstdc++: Define <stacktrace> header for C++23
@ 2022-01-17 12:16 Jonathan Wakely
0 siblings, 0 replies; only message in thread
From: Jonathan Wakely @ 2022-01-17 12:16 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:3acb929cc0beb79e6f4005eb22ee88b45e1cbc1d
commit r12-6635-g3acb929cc0beb79e6f4005eb22ee88b45e1cbc1d
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Mon Nov 15 11:08:06 2021 +0000
libstdc++: Define <stacktrace> header for C++23
Add the <stacktrace> header and a new libstdc++_libbacktrace.a library
that provides the implementation. For now, the new library is only built
if --enable-libstdcxx-backtrace=yes is used. As with the Filesystem TS,
the new library is only provided as a static archive.
libstdc++-v3/ChangeLog:
* acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): New macro.
* configure.ac: Use GLIBCXX_ENABLE_BACKTRACE.
* include/Makefile.am: Add new header.
* include/Makefile.in: Regenerate.
* include/std/stacktrace: New header.
* include/std/version (__cpp_lib_stacktrace): Define.
* Makefile.in: Regenerate.
* config.h.in: Regenerate.
* configure: Regenerate.
* doc/Makefile.in: Regenerate.
* libsupc++/Makefile.in: Regenerate.
* po/Makefile.in: Regenerate.
* python/Makefile.in: Regenerate.
* src/Makefile.am: Regenerate.
* src/Makefile.in: Regenerate.
* src/c++11/Makefile.in: Regenerate.
* src/c++17/Makefile.in: Regenerate.
* src/c++20/Makefile.in: Regenerate.
* src/c++98/Makefile.in: Regenerate.
* src/filesystem/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
* src/libbacktrace/Makefile.am: New file.
* src/libbacktrace/Makefile.in: New file.
* src/libbacktrace/backtrace-rename.h: New file.
* src/libbacktrace/backtrace-supported.h.in: New file.
* src/libbacktrace/config.h.in: New file.
* testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
New proc.
* testsuite/20_util/stacktrace/entry.cc: New test.
* testsuite/20_util/stacktrace/synopsis.cc: New test.
* testsuite/20_util/stacktrace/version.cc: New test.
Diff:
---
libstdc++-v3/Makefile.in | 7 +
libstdc++-v3/acinclude.m4 | 138 +++-
libstdc++-v3/config.h.in | 10 +
libstdc++-v3/configure | 317 +++++++-
libstdc++-v3/configure.ac | 3 +
libstdc++-v3/doc/Makefile.in | 7 +
libstdc++-v3/include/Makefile.am | 1 +
libstdc++-v3/include/Makefile.in | 8 +
libstdc++-v3/include/std/stacktrace | 672 ++++++++++++++++
libstdc++-v3/include/std/version | 3 +
libstdc++-v3/libsupc++/Makefile.in | 7 +
libstdc++-v3/po/Makefile.in | 7 +
libstdc++-v3/python/Makefile.in | 7 +
libstdc++-v3/src/Makefile.am | 11 +-
libstdc++-v3/src/Makefile.in | 14 +-
libstdc++-v3/src/c++11/Makefile.in | 7 +
libstdc++-v3/src/c++17/Makefile.in | 7 +
libstdc++-v3/src/c++20/Makefile.in | 7 +
libstdc++-v3/src/c++98/Makefile.in | 7 +
libstdc++-v3/src/filesystem/Makefile.in | 7 +
libstdc++-v3/src/libbacktrace/Makefile.am | 101 +++
libstdc++-v3/src/libbacktrace/Makefile.in | 860 +++++++++++++++++++++
libstdc++-v3/src/libbacktrace/backtrace-rename.h | 41 +
.../src/libbacktrace/backtrace-supported.h.in | 61 ++
libstdc++-v3/src/libbacktrace/config.h.in | 184 +++++
libstdc++-v3/testsuite/20_util/stacktrace/entry.cc | 53 ++
.../testsuite/20_util/stacktrace/synopsis.cc | 46 ++
.../testsuite/20_util/stacktrace/version.cc | 11 +
libstdc++-v3/testsuite/Makefile.in | 7 +
libstdc++-v3/testsuite/lib/libstdc++.exp | 8 +
30 files changed, 2605 insertions(+), 14 deletions(-)
diff --git a/libstdc++-v3/Makefile.in b/libstdc++-v3/Makefile.in
index 150e4d08051..58a0acdcc1b 100644
--- a/libstdc++-v3/Makefile.in
+++ b/libstdc++-v3/Makefile.in
@@ -185,6 +185,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -196,6 +197,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -240,6 +245,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -295,6 +301,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index b770d5bcdc4..336c690f07b 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -49,7 +49,7 @@ AC_DEFUN([GLIBCXX_CONFIGURE], [
# Keep these sync'd with the list in Makefile.am. The first provides an
# expandable list at autoconf time; the second provides an expandable list
# (i.e., shell variable) at configure time.
- m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/c++17 src/c++20 src/filesystem doc po testsuite python])
+ m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/c++17 src/c++20 src/filesystem src/libbacktrace doc po testsuite python])
SUBDIRS='glibcxx_SUBDIRS'
# These need to be absolute paths, yet at the same time need to
@@ -4801,6 +4801,142 @@ AC_DEFUN([GLIBCXX_CHECK_ARC4RANDOM], [
AC_LANG_RESTORE
])
+dnl
+dnl Check to see whether to build libstdc++_libbacktrace.a
+dnl
+dnl --enable-libstdcxx-backtrace
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_BACKTRACE], [
+ GLIBCXX_ENABLE(libstdcxx-backtrace,auto,,
+ [turns on libbacktrace support],
+ [permit yes|no|auto])
+
+ # Most of this is adapted from libsanitizer/configure.ac
+
+ BACKTRACE_CPPFLAGS=
+
+ # libbacktrace only needs atomics for int, which we've already tested
+ if test "$glibcxx_cv_atomic_int" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_ATOMIC_FUNCTIONS=1"
+ fi
+
+ # Test for __sync support.
+ AC_CACHE_CHECK([__sync extensions],
+ [glibcxx_cv_sys_sync],
+ [GCC_TRY_COMPILE_OR_LINK(
+ [int i;],
+ [__sync_bool_compare_and_swap (&i, i, i);
+ __sync_lock_test_and_set (&i, 1);
+ __sync_lock_release (&i);],
+ [glibcxx_cv_sys_sync=yes],
+ [glibcxx_cv_sys_sync=no])
+ ])
+ if test "$glibcxx_cv_sys_sync" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_SYNC_FUNCTIONS=1"
+ fi
+
+ # Check for dl_iterate_phdr.
+ AC_CHECK_HEADERS(link.h)
+ if test "$ac_cv_header_link_h" = "no"; then
+ have_dl_iterate_phdr=no
+ else
+ # When built as a GCC target library, we can't do a link test.
+ AC_EGREP_HEADER([dl_iterate_phdr], [link.h], [have_dl_iterate_phdr=yes],
+ [have_dl_iterate_phdr=no])
+ fi
+ if test "$have_dl_iterate_phdr" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_DL_ITERATE_PHDR=1"
+ fi
+
+ # Check for the fcntl function.
+ if test -n "${with_target_subdir}"; then
+ case "${host}" in
+ *-*-mingw*) have_fcntl=no ;;
+ *) have_fcntl=yes ;;
+ esac
+ else
+ AC_CHECK_FUNC(fcntl, [have_fcntl=yes], [have_fcntl=no])
+ fi
+ if test "$have_fcntl" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_FCNTL=1"
+ fi
+
+ AC_CHECK_DECLS(strnlen)
+
+ # Check for getexecname function.
+ if test -n "${with_target_subdir}"; then
+ case "${host}" in
+ *-*-solaris2*) have_getexecname=yes ;;
+ *) have_getexecname=no ;;
+ esac
+ else
+ AC_CHECK_FUNC(getexecname, [have_getexecname=yes], [have_getexecname=no])
+ fi
+ if test "$have_getexecname" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_GETEXECNAME=1"
+ fi
+
+# The library needs to be able to read the executable itself. Compile
+# a file to determine the executable format. The awk script
+# filetype.awk prints out the file type.
+AC_CACHE_CHECK([output filetype],
+[glibcxx_cv_sys_filetype],
+[filetype=
+AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([int i;], [int j;])],
+ [filetype=`${AWK} -f $srcdir/../libbacktrace/filetype.awk conftest.$ac_objext`],
+ [AC_MSG_FAILURE([compiler failed])])
+glibcxx_cv_sys_filetype=$filetype])
+
+# Match the file type to decide what files to compile.
+FORMAT_FILE=
+case "$glibcxx_cv_sys_filetype" in
+elf*) FORMAT_FILE="elf.lo" ;;
+*) AC_MSG_WARN([could not determine output file type])
+ FORMAT_FILE="unknown.lo"
+ enable_libstdcxx_backtrace=no
+ ;;
+esac
+AC_SUBST(FORMAT_FILE)
+
+# ELF defines.
+elfsize=
+case "$glibcxx_cv_sys_filetype" in
+elf32) elfsize=32 ;;
+elf64) elfsize=64 ;;
+esac
+BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DBACKTRACE_ELF_SIZE=$elfsize"
+
+ ALLOC_FILE=alloc.lo
+ AC_SUBST(ALLOC_FILE)
+ VIEW_FILE=read.lo
+ AC_SUBST(VIEW_FILE)
+
+ AC_MSG_CHECKING([whether to build libbacktrace support])
+ if test "$enable_libstdcxx_backtrace" == "auto"; then
+ enable_libstdcxx_backtrace=no
+ fi
+ if test "$enable_libstdcxx_backtrace" == "yes"; then
+ BACKTRACE_SUPPORTED=1
+ BACKTRACE_USES_MALLOC=1
+ if test "$ac_has_gthreads" = "yes"; then
+ BACKTRACE_SUPPORTS_THREADS=1
+ else
+ BACKTRACE_SUPPORTS_THREADS=0
+ fi
+ AC_SUBST(BACKTRACE_CPPFLAGS)
+ AC_SUBST(BACKTRACE_SUPPORTED)
+ AC_SUBST(BACKTRACE_USES_MALLOC)
+ AC_SUBST(BACKTRACE_SUPPORTS_THREADS)
+ AC_DEFINE(HAVE_STACKTRACE, 1, [Define if the <stacktrace> header is supported.])
+ else
+ BACKTRACE_SUPPORTED=0
+ BACKTRACE_USES_MALLOC=0
+ BACKTRACE_SUPPORTS_THREADS=0
+ fi
+ AC_MSG_RESULT($enable_libstdcxx_backtrace)
+ GLIBCXX_CONDITIONAL(ENABLE_BACKTRACE, [test "$enable_libstdcxx_backtrace" != no])
+])
# Macros from the top-level gcc directory.
m4_include([../config/gc++filt.m4])
diff --git a/libstdc++-v3/config.h.in b/libstdc++-v3/config.h.in
index 10675fe2530..168961aa11b 100644
--- a/libstdc++-v3/config.h.in
+++ b/libstdc++-v3/config.h.in
@@ -66,6 +66,10 @@
/* Define to 1 if you have the `cosl' function. */
#undef HAVE_COSL
+/* Define to 1 if you have the declaration of `strnlen', and to 0 if you
+ don't. */
+#undef HAVE_DECL_STRNLEN
+
/* Define to 1 if you have the <dirent.h> header file. */
#undef HAVE_DIRENT_H
@@ -213,6 +217,9 @@
/* Define if link is available in <unistd.h>. */
#undef HAVE_LINK
+/* Define to 1 if you have the <link.h> header file. */
+#undef HAVE_LINK_H
+
/* Define if futex syscall is available. */
#undef HAVE_LINUX_FUTEX
@@ -346,6 +353,9 @@
/* Define to 1 if you have the `sqrtl' function. */
#undef HAVE_SQRTL
+/* Define if the <stacktrace> header is supported. */
+#undef HAVE_STACKTRACE
+
/* Define to 1 if you have the <stdalign.h> header file. */
#undef HAVE_STDALIGN_H
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 0f291863747..34f6718cfd0 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -675,6 +675,15 @@ DOT
DOXYGEN
BUILD_INFO_FALSE
BUILD_INFO_TRUE
+ENABLE_BACKTRACE_FALSE
+ENABLE_BACKTRACE_TRUE
+BACKTRACE_SUPPORTS_THREADS
+BACKTRACE_USES_MALLOC
+BACKTRACE_SUPPORTED
+BACKTRACE_CPPFLAGS
+VIEW_FILE
+ALLOC_FILE
+FORMAT_FILE
ENABLE_FILESYSTEM_TS_FALSE
ENABLE_FILESYSTEM_TS_TRUE
baseline_subdir_switch
@@ -947,6 +956,7 @@ enable_libstdcxx_dual_abi
with_default_libstdcxx_abi
enable_libstdcxx_threads
enable_libstdcxx_filesystem_ts
+enable_libstdcxx_backtrace
enable_cet
with_gxx_include_dir
enable_version_specific_runtime_libs
@@ -1653,6 +1663,8 @@ Optional Features:
enable C++11 threads support [default=auto]
--enable-libstdcxx-filesystem-ts
turns on ISO/IEC TS 18822 support [default=auto]
+ --enable-libstdcxx-backtrace
+ turns on libbacktrace support [default=auto]
--enable-cet enable Intel CET in target libraries [default=auto]
--enable-version-specific-runtime-libs
Specify that runtime libraries should be installed
@@ -5539,7 +5551,7 @@ $as_echo "$ac_cv_path_EGREP" >&6; }
# expandable list at autoconf time; the second provides an expandable list
# (i.e., shell variable) at configure time.
- SUBDIRS='include libsupc++ src src/c++98 src/c++11 src/c++17 src/c++20 src/filesystem doc po testsuite python'
+ SUBDIRS='include libsupc++ src src/c++98 src/c++11 src/c++17 src/c++20 src/filesystem src/libbacktrace doc po testsuite python'
# These need to be absolute paths, yet at the same time need to
# canonicalize only relative paths, because then amd will not unmount
@@ -12179,7 +12191,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 12182 "configure"
+#line 12194 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -12285,7 +12297,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 12288 "configure"
+#line 12300 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -15969,7 +15981,7 @@ $as_echo "$glibcxx_cv_atomic_long_long" >&6; }
# Fake what AC_TRY_COMPILE does.
cat > conftest.$ac_ext << EOF
-#line 15972 "configure"
+#line 15984 "configure"
int main()
{
typedef bool atomic_type;
@@ -16004,7 +16016,7 @@ $as_echo "$glibcxx_cv_atomic_bool" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 16007 "configure"
+#line 16019 "configure"
int main()
{
typedef short atomic_type;
@@ -16039,7 +16051,7 @@ $as_echo "$glibcxx_cv_atomic_short" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 16042 "configure"
+#line 16054 "configure"
int main()
{
// NB: _Atomic_word not necessarily int.
@@ -16075,7 +16087,7 @@ $as_echo "$glibcxx_cv_atomic_int" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 16078 "configure"
+#line 16090 "configure"
int main()
{
typedef long long atomic_type;
@@ -16228,7 +16240,7 @@ $as_echo "mutex" >&6; }
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
-#line 16231 "configure"
+#line 16243 "configure"
int main()
{
_Decimal32 d1;
@@ -16270,7 +16282,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
-#line 16273 "configure"
+#line 16285 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
@@ -76951,6 +76963,263 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ # Check whether --enable-libstdcxx-backtrace was given.
+if test "${enable_libstdcxx_backtrace+set}" = set; then :
+ enableval=$enable_libstdcxx_backtrace;
+ case "$enableval" in
+ yes|no|auto) ;;
+ *) as_fn_error $? "Unknown argument to enable/disable libstdcxx-backtrace" "$LINENO" 5 ;;
+ esac
+
+else
+ enable_libstdcxx_backtrace=auto
+fi
+
+
+
+ # Most of this is adapted from libsanitizer/configure.ac
+
+ BACKTRACE_CPPFLAGS=
+
+ # libbacktrace only needs atomics for int, which we've already tested
+ if test "$glibcxx_cv_atomic_int" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_ATOMIC_FUNCTIONS=1"
+ fi
+
+ # Test for __sync support.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking __sync extensions" >&5
+$as_echo_n "checking __sync extensions... " >&6; }
+if ${glibcxx_cv_sys_sync+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test x$gcc_no_link = xyes; then
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int i;
+int
+main ()
+{
+__sync_bool_compare_and_swap (&i, i, i);
+ __sync_lock_test_and_set (&i, 1);
+ __sync_lock_release (&i);
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ glibcxx_cv_sys_sync=yes
+else
+ glibcxx_cv_sys_sync=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+else
+ if test x$gcc_no_link = xyes; then
+ as_fn_error $? "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int i;
+int
+main ()
+{
+__sync_bool_compare_and_swap (&i, i, i);
+ __sync_lock_test_and_set (&i, 1);
+ __sync_lock_release (&i);
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ glibcxx_cv_sys_sync=yes
+else
+ glibcxx_cv_sys_sync=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_sys_sync" >&5
+$as_echo "$glibcxx_cv_sys_sync" >&6; }
+ if test "$glibcxx_cv_sys_sync" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_SYNC_FUNCTIONS=1"
+ fi
+
+ # Check for dl_iterate_phdr.
+ for ac_header in link.h
+do :
+ ac_fn_c_check_header_mongrel "$LINENO" "link.h" "ac_cv_header_link_h" "$ac_includes_default"
+if test "x$ac_cv_header_link_h" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LINK_H 1
+_ACEOF
+
+fi
+
+done
+
+ if test "$ac_cv_header_link_h" = "no"; then
+ have_dl_iterate_phdr=no
+ else
+ # When built as a GCC target library, we can't do a link test.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <link.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "dl_iterate_phdr" >/dev/null 2>&1; then :
+ have_dl_iterate_phdr=yes
+else
+ have_dl_iterate_phdr=no
+fi
+rm -f conftest*
+
+ fi
+ if test "$have_dl_iterate_phdr" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_DL_ITERATE_PHDR=1"
+ fi
+
+ # Check for the fcntl function.
+ if test -n "${with_target_subdir}"; then
+ case "${host}" in
+ *-*-mingw*) have_fcntl=no ;;
+ *) have_fcntl=yes ;;
+ esac
+ else
+ ac_fn_c_check_func "$LINENO" "fcntl" "ac_cv_func_fcntl"
+if test "x$ac_cv_func_fcntl" = xyes; then :
+ have_fcntl=yes
+else
+ have_fcntl=no
+fi
+
+ fi
+ if test "$have_fcntl" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_FCNTL=1"
+ fi
+
+ ac_fn_c_check_decl "$LINENO" "strnlen" "ac_cv_have_decl_strnlen" "$ac_includes_default"
+if test "x$ac_cv_have_decl_strnlen" = xyes; then :
+ ac_have_decl=1
+else
+ ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_STRNLEN $ac_have_decl
+_ACEOF
+
+
+ # Check for getexecname function.
+ if test -n "${with_target_subdir}"; then
+ case "${host}" in
+ *-*-solaris2*) have_getexecname=yes ;;
+ *) have_getexecname=no ;;
+ esac
+ else
+ ac_fn_c_check_func "$LINENO" "getexecname" "ac_cv_func_getexecname"
+if test "x$ac_cv_func_getexecname" = xyes; then :
+ have_getexecname=yes
+else
+ have_getexecname=no
+fi
+
+ fi
+ if test "$have_getexecname" = "yes"; then
+ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_GETEXECNAME=1"
+ fi
+
+# The library needs to be able to read the executable itself. Compile
+# a file to determine the executable format. The awk script
+# filetype.awk prints out the file type.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking output filetype" >&5
+$as_echo_n "checking output filetype... " >&6; }
+if ${glibcxx_cv_sys_filetype+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ filetype=
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int i;
+int
+main ()
+{
+int j;
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ filetype=`${AWK} -f $srcdir/../libbacktrace/filetype.awk conftest.$ac_objext`
+else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "compiler failed
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+glibcxx_cv_sys_filetype=$filetype
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_sys_filetype" >&5
+$as_echo "$glibcxx_cv_sys_filetype" >&6; }
+
+# Match the file type to decide what files to compile.
+FORMAT_FILE=
+case "$glibcxx_cv_sys_filetype" in
+elf*) FORMAT_FILE="elf.lo" ;;
+*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: could not determine output file type" >&5
+$as_echo "$as_me: WARNING: could not determine output file type" >&2;}
+ FORMAT_FILE="unknown.lo"
+ enable_libstdcxx_backtrace=no
+ ;;
+esac
+
+
+# ELF defines.
+elfsize=
+case "$glibcxx_cv_sys_filetype" in
+elf32) elfsize=32 ;;
+elf64) elfsize=64 ;;
+esac
+BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DBACKTRACE_ELF_SIZE=$elfsize"
+
+ ALLOC_FILE=alloc.lo
+
+ VIEW_FILE=read.lo
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build libbacktrace support" >&5
+$as_echo_n "checking whether to build libbacktrace support... " >&6; }
+ if test "$enable_libstdcxx_backtrace" == "auto"; then
+ enable_libstdcxx_backtrace=no
+ fi
+ if test "$enable_libstdcxx_backtrace" == "yes"; then
+ BACKTRACE_SUPPORTED=1
+ BACKTRACE_USES_MALLOC=1
+ if test "$ac_has_gthreads" = "yes"; then
+ BACKTRACE_SUPPORTS_THREADS=1
+ else
+ BACKTRACE_SUPPORTS_THREADS=0
+ fi
+
+
+
+
+
+$as_echo "#define HAVE_STACKTRACE 1" >>confdefs.h
+
+ else
+ BACKTRACE_SUPPORTED=0
+ BACKTRACE_USES_MALLOC=0
+ BACKTRACE_SUPPORTS_THREADS=0
+ fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_libstdcxx_backtrace" >&5
+$as_echo "$enable_libstdcxx_backtrace" >&6; }
+
+
+
# For Networking TS.
for ac_header in fcntl.h sys/ioctl.h sys/socket.h sys/uio.h poll.h netdb.h arpa/inet.h netinet/in.h netinet/tcp.h
do :
@@ -77970,6 +78239,15 @@ else
fi
+ if test "$enable_libstdcxx_backtrace" != no; then
+ ENABLE_BACKTRACE_TRUE=
+ ENABLE_BACKTRACE_FALSE='#'
+else
+ ENABLE_BACKTRACE_TRUE='#'
+ ENABLE_BACKTRACE_FALSE=
+fi
+
+
cat >confcache <<\_ACEOF
@@ -78235,6 +78513,8 @@ ac_config_files="$ac_config_files scripts/extract_symvers"
ac_config_files="$ac_config_files doc/xsl/customization.xsl"
+ac_config_files="$ac_config_files src/libbacktrace/backtrace-supported.h"
+
# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
# that multilib installs will end up installed in the correct place.
@@ -78244,7 +78524,7 @@ ac_config_files="$ac_config_files doc/xsl/customization.xsl"
# append it here. Only modify Makefiles that have just been created.
#
# Also, get rid of this simulated-VPATH thing that automake does.
-ac_config_files="$ac_config_files include/Makefile libsupc++/Makefile src/Makefile src/c++98/Makefile src/c++11/Makefile src/c++17/Makefile src/c++20/Makefile src/filesystem/Makefile doc/Makefile po/Makefile testsuite/Makefile python/Makefile"
+ac_config_files="$ac_config_files include/Makefile libsupc++/Makefile src/Makefile src/c++98/Makefile src/c++11/Makefile src/c++17/Makefile src/c++20/Makefile src/filesystem/Makefile src/libbacktrace/Makefile doc/Makefile po/Makefile testsuite/Makefile python/Makefile"
ac_config_commands="$ac_config_commands generate-headers"
@@ -78479,6 +78759,10 @@ if test -z "${ENABLE_FILESYSTEM_TS_TRUE}" && test -z "${ENABLE_FILESYSTEM_TS_FAL
as_fn_error $? "conditional \"ENABLE_FILESYSTEM_TS\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
+if test -z "${ENABLE_BACKTRACE_TRUE}" && test -z "${ENABLE_BACKTRACE_FALSE}"; then
+ as_fn_error $? "conditional \"ENABLE_BACKTRACE\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
if test -z "${BUILD_INFO_TRUE}" && test -z "${BUILD_INFO_FALSE}"; then
as_fn_error $? "conditional \"BUILD_INFO\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -79498,6 +79782,7 @@ do
"scripts/testsuite_flags") CONFIG_FILES="$CONFIG_FILES scripts/testsuite_flags" ;;
"scripts/extract_symvers") CONFIG_FILES="$CONFIG_FILES scripts/extract_symvers" ;;
"doc/xsl/customization.xsl") CONFIG_FILES="$CONFIG_FILES doc/xsl/customization.xsl" ;;
+ "src/libbacktrace/backtrace-supported.h") CONFIG_FILES="$CONFIG_FILES src/libbacktrace/backtrace-supported.h" ;;
"include/Makefile") CONFIG_FILES="$CONFIG_FILES include/Makefile" ;;
"libsupc++/Makefile") CONFIG_FILES="$CONFIG_FILES libsupc++/Makefile" ;;
"src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
@@ -79506,6 +79791,7 @@ do
"src/c++17/Makefile") CONFIG_FILES="$CONFIG_FILES src/c++17/Makefile" ;;
"src/c++20/Makefile") CONFIG_FILES="$CONFIG_FILES src/c++20/Makefile" ;;
"src/filesystem/Makefile") CONFIG_FILES="$CONFIG_FILES src/filesystem/Makefile" ;;
+ "src/libbacktrace/Makefile") CONFIG_FILES="$CONFIG_FILES src/libbacktrace/Makefile" ;;
"doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
"po/Makefile") CONFIG_FILES="$CONFIG_FILES po/Makefile" ;;
"testsuite/Makefile") CONFIG_FILES="$CONFIG_FILES testsuite/Makefile" ;;
@@ -81377,6 +81663,17 @@ _EOF
;;
"src/filesystem/Makefile":F) cat > vpsed$$ << \_EOF
s!`test -f '$<' || echo '$(srcdir)/'`!!
+_EOF
+ sed -f vpsed$$ $ac_file > tmp$$
+ mv tmp$$ $ac_file
+ rm vpsed$$
+ echo 'MULTISUBDIR =' >> $ac_file
+ ml_norecursion=yes
+ . ${multi_basedir}/config-ml.in
+ { ml_norecursion=; unset ml_norecursion;}
+ ;;
+ "src/libbacktrace/Makefile":F) cat > vpsed$$ << \_EOF
+s!`test -f '$<' || echo '$(srcdir)/'`!!
_EOF
sed -f vpsed$$ $ac_file > tmp$$
mv tmp$$ $ac_file
diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index 827d770f444..2a3bc520501 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -489,6 +489,8 @@ AC_CHECK_HEADERS([fcntl.h dirent.h sys/statvfs.h utime.h])
GLIBCXX_ENABLE_FILESYSTEM_TS
GLIBCXX_CHECK_FILESYSTEM_DEPS
+GLIBCXX_ENABLE_BACKTRACE
+
# For Networking TS.
AC_CHECK_HEADERS([fcntl.h sys/ioctl.h sys/socket.h sys/uio.h poll.h netdb.h arpa/inet.h netinet/in.h netinet/tcp.h])
AC_CHECK_DECL(F_GETFL,,,[#include <fcntl.h>])
@@ -629,6 +631,7 @@ AC_CONFIG_FILES(Makefile)
AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
AC_CONFIG_FILES([doc/xsl/customization.xsl])
+AC_CONFIG_FILES([src/libbacktrace/backtrace-supported.h])
# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
# that multilib installs will end up installed in the correct place.
diff --git a/libstdc++-v3/doc/Makefile.in b/libstdc++-v3/doc/Makefile.in
index 443d29192ad..6aaceea7491 100644
--- a/libstdc++-v3/doc/Makefile.in
+++ b/libstdc++-v3/doc/Makefile.in
@@ -144,6 +144,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -155,6 +156,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -199,6 +204,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -254,6 +260,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
index 65b2b4e64af..d1431926cdd 100644
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -80,6 +80,7 @@ std_headers = \
${std_srcdir}/sstream \
${std_srcdir}/syncstream \
${std_srcdir}/stack \
+ ${std_srcdir}/stacktrace \
${std_srcdir}/stdexcept \
${std_srcdir}/stop_token \
${std_srcdir}/streambuf \
diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index 98d70213a1e..de2a25f5168 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -144,6 +144,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -155,6 +156,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -199,6 +204,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -254,6 +260,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
@@ -431,6 +438,7 @@ std_headers = \
${std_srcdir}/sstream \
${std_srcdir}/syncstream \
${std_srcdir}/stack \
+ ${std_srcdir}/stacktrace \
${std_srcdir}/stdexcept \
${std_srcdir}/stop_token \
${std_srcdir}/streambuf \
diff --git a/libstdc++-v3/include/std/stacktrace b/libstdc++-v3/include/std/stacktrace
new file mode 100644
index 00000000000..623f44bdca4
--- /dev/null
+++ b/libstdc++-v3/include/std/stacktrace
@@ -0,0 +1,672 @@
+// <stacktrace> -*- C++ -*-
+
+// Copyright The GNU Toolchain Authors.
+//
+// This file is part of the GNU ISO C++ Library. This library 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.
+
+// This library 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+#ifndef _GLIBCXX_STACKTRACE
+#define _GLIBCXX_STACKTRACE 1
+
+#pragma GCC system_header
+
+#include <bits/c++config.h>
+
+#if __cplusplus > 202002L && _GLIBCXX_HAVE_STACKTRACE
+#include <compare>
+#include <string>
+#include <sstream>
+#include <bits/stl_algobase.h>
+#include <bits/stl_algo.h>
+#include <bits/stl_iterator.h>
+#include <bits/stl_uninitialized.h>
+#include <cxxabi.h>
+
+struct __glibcxx_backtrace_state;
+struct __glibcxx_backtrace_simple_data;
+
+extern "C"
+{
+__glibcxx_backtrace_state*
+__glibcxx_backtrace_create_state(const char*, int,
+ void(*)(void*, const char*, int),
+ void*);
+
+int
+__glibcxx_backtrace_simple(__glibcxx_backtrace_state*, int,
+ int (*) (void*, uintptr_t),
+ void(*)(void*, const char*, int),
+ void*);
+int
+__glibcxx_backtrace_pcinfo(__glibcxx_backtrace_state*, uintptr_t,
+ int (*)(void*, uintptr_t,
+ const char*, int, const char*),
+ void(*)(void*, const char*, int),
+ void*);
+
+int
+__glibcxx_backtrace_syminfo(__glibcxx_backtrace_state*, uintptr_t addr,
+ void (*) (void*, uintptr_t, const char*,
+ uintptr_t, uintptr_t),
+ void(*)(void*, const char*, int),
+ void*);
+}
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+#define __cpp_lib_stacktrace 202011L
+
+ // [stacktrace.entry], class stacktrace_entry
+ class stacktrace_entry
+ {
+ using uint_least32_t = __UINT_LEAST32_TYPE__;
+ using uintptr_t = __UINTPTR_TYPE__;
+
+ public:
+ using native_handle_type = uintptr_t;
+
+ // [stacktrace.entry.ctor], constructors
+
+ constexpr
+ stacktrace_entry() noexcept = default;
+
+ constexpr
+ stacktrace_entry(const stacktrace_entry& __other) noexcept = default;
+
+ constexpr stacktrace_entry&
+ operator=(const stacktrace_entry& __other) noexcept = default;
+
+ ~stacktrace_entry() = default;
+
+ // [stacktrace.entry.obs], observers
+
+ constexpr native_handle_type
+ native_handle() const noexcept { return _M_pc; }
+
+ constexpr explicit operator bool() const noexcept { return _M_pc != -1; }
+
+ // [stacktrace.entry.query], query
+ string
+ description() const
+ {
+ string __s;
+ _M_get_info(&__s, nullptr, nullptr);
+ return __s;
+ }
+
+ string
+ source_file() const
+ {
+ string __s;
+ _M_get_info(nullptr, &__s, nullptr);
+ return __s;
+ }
+
+ uint_least32_t
+ source_line() const
+ {
+ int __line = 0;
+ _M_get_info(nullptr, nullptr, &__line);
+ return __line;
+ }
+
+ // [stacktrace.entry.cmp], comparison
+ friend constexpr bool
+ operator==(const stacktrace_entry& __x,
+ const stacktrace_entry& __y) noexcept
+ { return __x._M_pc == __y._M_pc; }
+
+ friend constexpr strong_ordering
+ operator<=>(const stacktrace_entry& __x,
+ const stacktrace_entry& __y) noexcept
+ { return __x._M_pc <=> __y._M_pc; }
+
+ private:
+ native_handle_type _M_pc = -1;
+
+ template<typename _Allocator> friend class basic_stacktrace;
+
+ static __glibcxx_backtrace_state*
+ _S_init()
+ {
+ static __glibcxx_backtrace_state* __state
+ = __glibcxx_backtrace_create_state(nullptr, 1, nullptr, nullptr);
+ return __state;
+ }
+
+ template<typename _CharT, typename _Traits>
+ friend basic_ostream<_CharT, _Traits>&
+ operator<<(basic_ostream<_CharT, _Traits>&, const stacktrace_entry&);
+
+ bool
+ _M_get_info(string* __desc, string* __file, int* __line) const
+ {
+ if (!*this)
+ return false;
+
+ struct _Data
+ {
+ string* _M_desc;
+ string* _M_file;
+ int* _M_line;
+ } __data = { __desc, __file, __line };
+
+ auto __cb = [](void* __data, uintptr_t, const char* __filename,
+ int __lineno, const char* __function) -> int {
+ auto& __d = *static_cast<_Data*>(__data);
+ if (__function && __d._M_desc)
+ *__d._M_desc = _S_demangle(__function);
+ if (__filename && __d._M_file)
+ *__d._M_file = __filename;
+ if (__d._M_line)
+ *__d._M_line = __lineno;
+ return __function != nullptr;
+ };
+ const auto __state = _S_init();
+ if (::__glibcxx_backtrace_pcinfo(__state, _M_pc, +__cb, nullptr, &__data))
+ return true;
+ if (__desc && __desc->empty())
+ {
+ auto __cb2 = [](void* __data, uintptr_t, const char* __symname,
+ uintptr_t, uintptr_t) {
+ if (__symname)
+ *static_cast<_Data*>(__data)->_M_desc = _S_demangle(__symname);
+ };
+ if (::__glibcxx_backtrace_syminfo(__state, _M_pc, +__cb2, nullptr,
+ &__data))
+ return true;
+ }
+ return false;
+ }
+
+ static string
+ _S_demangle(const char* __name)
+ {
+ string __s;
+ int __status;
+ char* __str = __cxxabiv1::__cxa_demangle(__name, nullptr, nullptr,
+ &__status);
+ if (__status == 0)
+ __s = __str;
+ __builtin_free(__str);
+ return __s;
+ }
+ };
+
+ // [stacktrace.basic], class template basic_stacktrace
+ template<typename _Allocator>
+ class basic_stacktrace
+ {
+ using _AllocTraits = allocator_traits<_Allocator>;
+
+ public:
+ using value_type = stacktrace_entry;
+ using const_reference = const value_type&;
+ using reference = value_type&;
+ using const_iterator
+ = __gnu_cxx::__normal_iterator<value_type*, basic_stacktrace>;
+ using iterator = const_iterator;
+ using reverse_iterator = std::reverse_iterator<iterator>;
+ using const_reverse_iterator = std::reverse_iterator<const_iterator>;
+ using difference_type = ptrdiff_t;
+ using size_type = unsigned short;
+ using allocator_type = _Allocator;
+
+ // [stacktrace.basic.ctor], creation and assignment
+
+ static basic_stacktrace
+ current(const allocator_type& __alloc = allocator_type()) noexcept
+ {
+ return current(0, size_type(-1), __alloc);
+ }
+
+ static basic_stacktrace
+ current(size_type __skip,
+ const allocator_type& __alloc = allocator_type()) noexcept
+ {
+ return current(__skip, size_type(-1), __alloc);
+ }
+
+ static basic_stacktrace
+ current(size_type __skip, size_type __max_depth,
+ const allocator_type& __alloc = allocator_type()) noexcept
+ {
+ __glibcxx_assert(__skip <= (size_type(-1) - __max_depth));
+
+ auto __state = stacktrace_entry::_S_init();
+ basic_stacktrace __ret(__alloc);
+ if (!__ret._M_reserve(std::min<int>(__max_depth, 64)))
+ return __ret;
+
+ auto __cb = [](void* __data, uintptr_t __pc) {
+ auto& __s = *static_cast<basic_stacktrace*>(__data);
+ stacktrace_entry __f;
+ __f._M_pc = __pc;
+ if (__s._M_push_back(__f))
+ return 0;
+ return 1;
+ };
+
+ if (__glibcxx_backtrace_simple(__state, __skip, +__cb, nullptr,
+ std::__addressof(__ret)))
+ {
+ __ret._M_clear();
+ }
+ return __ret;
+ }
+
+ basic_stacktrace()
+ noexcept(is_nothrow_default_constructible_v<allocator_type>)
+ { }
+
+ explicit
+ basic_stacktrace(const allocator_type& __alloc) noexcept
+ : _M_alloc(__alloc)
+ { }
+
+ basic_stacktrace(const basic_stacktrace& __other) noexcept
+ : basic_stacktrace(__other, __other._M_alloc)
+ { }
+
+ basic_stacktrace(basic_stacktrace&& __other) noexcept
+ : _M_alloc(std::move(__other._M_alloc)),
+ _M_impl(std::__exchange(__other._M_impl, {}))
+ { }
+
+ basic_stacktrace(const basic_stacktrace& __other,
+ const allocator_type& __alloc) noexcept
+ : _M_alloc(__alloc)
+ {
+ if (const auto __s = __other._M_impl._M_size)
+ if (auto __f = _M_impl._M_allocate(_M_alloc, __s))
+ {
+ std::uninitialized_copy_n(__other.begin(), __s, __f);
+ _M_impl._M_size = __s;
+ }
+ }
+
+ basic_stacktrace(basic_stacktrace&& __other,
+ const allocator_type& __alloc) noexcept
+ : _M_alloc(__alloc)
+ {
+ if constexpr (_Allocator::is_always_equal::value)
+ {
+ _M_impl = std::__exchange(__other._M_impl, {});
+ }
+ else if (_M_alloc == __other._M_alloc)
+ {
+ _M_impl = std::__exchange(__other._M_impl, {});
+ }
+ }
+
+ basic_stacktrace&
+ operator=(const basic_stacktrace& __other) noexcept
+ {
+ if (std::__addressof(__other) == this)
+ return *this;
+
+ constexpr bool __pocca
+ = _AllocTraits::propagate_on_container_copy_assignment::value;
+ constexpr bool __always_eq = _AllocTraits::is_always_equal::value;
+
+ const auto __s = __other.size();
+
+ if constexpr (!__always_eq && __pocca)
+ {
+ if (_M_alloc != __other._M_alloc)
+ {
+ // Cannot keep the same storage, so deallocate it now.
+ _M_clear();
+ }
+ }
+
+ if (_M_impl._M_capacity < __s)
+ {
+ // Need to allocate new storage.
+ _M_clear();
+
+ // Use the allocator we will have after this function returns.
+ auto& __alloc = __pocca ? __other._M_alloc : _M_alloc;
+ if (auto __f = _M_impl._M_allocate(__alloc, __s))
+ {
+ std::uninitialized_copy_n(__other.begin(), __s, __f);
+ _M_impl._M_size = __s;
+ }
+ }
+ else
+ {
+ // Current storage is large enough and can be freed by whichever
+ // allocator we will have after this function returns.
+ auto __to = std::copy_n(__other.begin(), __s, begin());
+ std::destroy(__to, end());
+ _M_impl._M_size = __s;
+ }
+
+ if constexpr (__pocca)
+ _M_alloc = __other._M_alloc;
+
+ return *this;
+ }
+
+ basic_stacktrace&
+ operator=(basic_stacktrace&& __other) noexcept
+ {
+ if (std::__addressof(__other) == this)
+ return *this;
+
+ constexpr bool __pocma
+ = _AllocTraits::propagate_on_container_move_assignment::value;
+
+ if constexpr (_AllocTraits::is_always_equal::value)
+ std::swap(_M_impl, __other._M_impl);
+ else if (_M_alloc == __other._M_alloc)
+ std::swap(_M_impl, __other._M_impl);
+ else
+ {
+ const auto __s = __other.size();
+
+ if constexpr (__pocma || _M_impl._M_capacity < __s)
+ {
+ // Need to allocate new storage.
+ _M_clear();
+
+ // Use the allocator we will have after this function returns.
+ auto& __alloc = __pocma ? __other._M_alloc : _M_alloc;
+ if (auto __f = _M_impl._M_allocate(__alloc, __s))
+ std::uninitialized_copy_n(__other.begin(), __s, __f);
+ }
+ else
+ {
+ // Current storage is large enough.
+ auto __first = __other.begin();
+ auto __mid = __first + std::min(__s, _M_impl._M_size);
+ auto __last = __other.end();
+ auto __to = std::copy(__first, __mid, begin());
+ __to = std::uninitialized_copy(__mid, __last, __to);
+ std::destroy(__to, end());
+ }
+ _M_impl._M_size = __s;
+ }
+
+ if constexpr (__pocma)
+ _M_alloc = std::move(__other._M_alloc);
+
+ return *this;
+ }
+
+ constexpr ~basic_stacktrace()
+ {
+ _M_clear();
+ }
+
+ // [stacktrace.basic.obs], observers
+ allocator_type get_allocator() const noexcept { return _M_alloc; }
+
+ const_iterator
+ begin() const noexcept
+ { return const_iterator{_M_impl._M_frames}; }
+
+ const_iterator
+ end() const noexcept
+ { return begin() + size(); }
+
+ const_reverse_iterator
+ rbegin() const noexcept
+ { return std::make_reverse_iterator(end()); }
+
+ const_reverse_iterator
+ rend() const noexcept
+ { return std::make_reverse_iterator(begin()); }
+
+ const_iterator cbegin() const noexcept { return begin(); }
+ const_iterator cend() const noexcept { return end(); }
+ const_reverse_iterator crbegin() const noexcept { return rbegin(); };
+ const_reverse_iterator crend() const noexcept { return rend(); };
+
+ [[nodiscard]] bool empty() const noexcept { return size() == 0; }
+ size_type size() const noexcept { return _M_impl._M_size; }
+ size_type max_size() const noexcept { return size_type(-1); }
+
+ const_reference
+ operator[](size_type __n) const noexcept
+ {
+ __glibcxx_assert(__n < size());
+ return begin()[__n];
+ }
+
+ const_reference
+ at(size_type __n) const
+ {
+ if (__n >= size())
+ __throw_out_of_range("basic_stack_trace::at: bad frame number");
+ return begin()[__n];
+ }
+
+ // [stacktrace.basic.cmp], comparisons
+ template<typename _Allocator2>
+ friend bool
+ operator==(const basic_stacktrace& __x,
+ const basic_stacktrace<_Allocator2>& __y) noexcept
+ { return std::equal(__x.begin(), __x.end(), __y.begin(), __y.end()); }
+
+ template<typename _Allocator2>
+ friend strong_ordering
+ operator<=>(const basic_stacktrace& __x,
+ const basic_stacktrace<_Allocator2>& __y) noexcept
+ {
+ if (auto __s = __x.size() <=> __y.size(); __s != 0)
+ return __s;
+ return std::lexicographical_compare_three_way(__x.begin(), __x.end(),
+ __y.begin(), __y.end());
+ }
+
+ // [stacktrace.basic.mod], modifiers
+ void
+ swap(basic_stacktrace& __other) noexcept
+ {
+ std::swap(_M_impl. __other._M_impl);
+ if constexpr (_AllocTraits::propagate_on_container_swap::value)
+ std::swap(_M_alloc, __other._M_alloc);
+ }
+
+ private:
+ bool
+ _M_reserve(size_type __n) noexcept
+ {
+ return _M_impl._M_allocate(_M_alloc, __n) != nullptr;
+ }
+
+ bool
+ _M_push_back(const value_type& __x) noexcept
+ {
+ return _M_impl._M_push_back(_M_alloc, __x);
+ }
+
+ void
+ _M_clear() noexcept
+ {
+ _M_impl._M_destroy();
+ _M_impl._M_deallocate(_M_alloc);
+ }
+
+ struct _Impl
+ {
+ using pointer = typename _AllocTraits::pointer;
+
+ pointer _M_frames = nullptr;
+ size_type _M_size = 0;
+ size_type _M_capacity = 0;
+
+ // Precondition: _M_frames == nullptr
+ pointer
+ _M_allocate(allocator_type& __alloc, size_type __n) noexcept
+ {
+ __try
+ {
+ _M_frames = __n ? __alloc.allocate(__n) : nullptr;
+ _M_capacity = __n;
+ }
+ __catch (...)
+ {
+ _M_frames = nullptr;
+ _M_capacity = 0;
+ }
+ return _M_frames;
+ }
+
+ void
+ _M_deallocate(allocator_type& __alloc) noexcept
+ {
+ if (_M_capacity)
+ {
+ __alloc.deallocate(_M_frames, _M_capacity);
+ _M_frames = nullptr;
+ _M_capacity = 0;
+ }
+ }
+
+ void
+ _M_destroy() noexcept
+ {
+ std::destroy_n(_M_frames, _M_size);
+ _M_size = 0;
+ }
+
+ bool
+ _M_push_back(allocator_type& __alloc,
+ const stacktrace_entry& __f) noexcept
+ {
+ if (_M_size == _M_capacity)
+ {
+ _Impl __tmp;
+ if (auto __f = __tmp._M_allocate(__alloc, _M_capacity * 2))
+ std::uninitialized_copy_n(_M_frames, _M_size, __f);
+ else
+ return false;
+ _M_deallocate(__alloc);
+ std::swap(*this, __tmp);
+ }
+ stacktrace_entry* __addr = std::to_address(_M_frames + _M_size++);
+ std::construct_at(__addr, __f);
+ return true;
+ }
+
+ };
+
+ [[no_unique_address]] allocator_type _M_alloc{};
+
+ _Impl _M_impl{};
+ };
+
+ // basic_stacktrace typedef names
+ using stacktrace = basic_stacktrace<allocator<stacktrace_entry>>;
+
+ // [stacktrace.basic.nonmem], non-member functions
+ template<typename _Allocator>
+ inline void
+ swap(basic_stacktrace<_Allocator>& __a, basic_stacktrace<_Allocator>& __b)
+ noexcept(noexcept(__a.swap(__b)))
+ { __a.swap(__b); }
+
+ template<typename _CharT, typename _Traits>
+ inline basic_ostream<_CharT, _Traits>&
+ operator<<(basic_ostream<_CharT, _Traits>& __os,
+ const stacktrace_entry& __f)
+ {
+ string __desc, __file;
+ int __line;
+ if (__f._M_get_info(&__desc, &__file, &__line))
+ {
+ __os.width(4);
+ __os << __desc << " at " << __file << ':' << __line;
+ }
+ return __os;
+ }
+
+ template<typename _CharT, typename _Traits, typename _Allocator>
+ inline basic_ostream<_CharT, _Traits>&
+ operator<<(basic_ostream<_CharT, _Traits>& __os,
+ const basic_stacktrace<_Allocator>& __st)
+ {
+ for (stacktrace::size_type __i = 0; __i < __st.size(); ++__i)
+ {
+ __os.width(4);
+ __os << __i << "# " << __st[__i] << '\n';
+ }
+ return __os;
+ }
+
+ inline string
+ to_string(const stacktrace_entry& __f)
+ {
+ std::ostringstream __os;
+ __os << __f;
+ return std::move(__os).str();
+ }
+
+ template<typename _Allocator>
+ string
+ to_string(const basic_stacktrace<_Allocator>& __st)
+ {
+ std::ostringstream __os;
+ __os << __st;
+ return std::move(__os).str();
+ }
+
+ namespace pmr
+ {
+ template<typename _Tp> class polymorphic_allocator;
+ using stacktrace
+ = basic_stacktrace<polymorphic_allocator<stacktrace_entry>>;
+ }
+
+ // [stacktrace.basic.hash], hash support
+
+ template<>
+ struct hash<stacktrace_entry>
+ {
+ size_t
+ operator()(const stacktrace_entry& __f) const noexcept
+ {
+ using __h = hash<stacktrace_entry::native_handle_type>;
+ return __h()(__f.native_handle());
+ }
+ };
+
+ template<typename _Allocator>
+ struct hash<basic_stacktrace<_Allocator>>
+ {
+ size_t
+ operator()(const basic_stacktrace<_Allocator>& __st) const noexcept
+ {
+ hash<stacktrace_entry::native_handle_type> __h;
+ size_t __val = _Hash_impl::hash(__st.size());
+ for (const auto& __f : __st)
+ __val = _Hash_impl::__hash_combine(__h(__f), __val);
+ return __val;
+ }
+ };
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace std
+#endif // C++23
+
+#endif /* _GLIBCXX_STACKTRACE */
diff --git a/libstdc++-v3/include/std/version b/libstdc++-v3/include/std/version
index 7bd32f67f19..e3afe57c782 100644
--- a/libstdc++-v3/include/std/version
+++ b/libstdc++-v3/include/std/version
@@ -312,6 +312,9 @@
#if __cpp_lib_span
# define __cpp_lib_spanstream 202106L
#endif
+#if _GLIBCXX_HAVE_STACKTRACE
+# define __cpp_lib_stacktrace 202011L
+#endif
#define __cpp_lib_string_contains 202011L
#if _GLIBCXX_USE_CXX11_ABI // Only supported with cxx11-abi
# define __cpp_lib_string_resize_and_overwrite 202110L
diff --git a/libstdc++-v3/libsupc++/Makefile.in b/libstdc++-v3/libsupc++/Makefile.in
index 5cbbf994d1a..a4402009b85 100644
--- a/libstdc++-v3/libsupc++/Makefile.in
+++ b/libstdc++-v3/libsupc++/Makefile.in
@@ -253,6 +253,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -264,6 +265,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -308,6 +313,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -363,6 +369,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/po/Makefile.in b/libstdc++-v3/po/Makefile.in
index 0d29364c67b..243f3db7b72 100644
--- a/libstdc++-v3/po/Makefile.in
+++ b/libstdc++-v3/po/Makefile.in
@@ -144,6 +144,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -155,6 +156,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -199,6 +204,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -254,6 +260,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/python/Makefile.in b/libstdc++-v3/python/Makefile.in
index 07b5807323e..9da4b31fc83 100644
--- a/libstdc++-v3/python/Makefile.in
+++ b/libstdc++-v3/python/Makefile.in
@@ -174,6 +174,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -185,6 +186,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -229,6 +234,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -284,6 +290,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/src/Makefile.am b/libstdc++-v3/src/Makefile.am
index 73f685b2366..71a0da2cd93 100644
--- a/libstdc++-v3/src/Makefile.am
+++ b/libstdc++-v3/src/Makefile.am
@@ -28,8 +28,14 @@ else
filesystem_dir =
endif
+if ENABLE_BACKTRACE
+backtrace_dir = libbacktrace
+else
+backtrace_dir =
+endif
+
## Keep this list sync'd with acinclude.m4:GLIBCXX_CONFIGURE.
-SUBDIRS = c++98 c++11 c++17 c++20 $(filesystem_dir)
+SUBDIRS = c++98 c++11 c++17 c++20 $(filesystem_dir) $(backtrace_dir)
# Cross compiler support.
if VTV_CYGMIN
@@ -64,6 +70,9 @@ vpath % $(top_srcdir)/src/c++20
if ENABLE_FILESYSTEM_TS
vpath % $(top_srcdir)/src/filesystem
endif
+if ENABLE_BACKTRACE
+vpath % $(top_srcdir)/src/libbacktrace
+endif
if GLIBCXX_LDBL_COMPAT
ldbl_compat_sources = compatibility-ldbl.cc
diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in
index fa4b243bd23..429f3d17967 100644
--- a/libstdc++-v3/src/Makefile.in
+++ b/libstdc++-v3/src/Makefile.in
@@ -238,11 +238,12 @@ am__define_uniq_tagged_files = \
done | $(am__uniquify_input)`
ETAGS = etags
CTAGS = ctags
-DIST_SUBDIRS = c++98 c++11 c++17 c++20 filesystem
+DIST_SUBDIRS = c++98 c++11 c++17 c++20 filesystem libbacktrace
ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -254,6 +255,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -298,6 +303,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -353,6 +359,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
@@ -473,7 +480,9 @@ WARN_CXXFLAGS = \
AM_CPPFLAGS = $(GLIBCXX_INCLUDES) $(CPPFLAGS)
@ENABLE_FILESYSTEM_TS_FALSE@filesystem_dir =
@ENABLE_FILESYSTEM_TS_TRUE@filesystem_dir = filesystem
-SUBDIRS = c++98 c++11 c++17 c++20 $(filesystem_dir)
+@ENABLE_BACKTRACE_FALSE@backtrace_dir =
+@ENABLE_BACKTRACE_TRUE@backtrace_dir = libbacktrace
+SUBDIRS = c++98 c++11 c++17 c++20 $(filesystem_dir) $(backtrace_dir)
@VTV_CYGMIN_FALSE@toolexeclib_LTLIBRARIES = libstdc++.la
# Cross compiler support.
@@ -993,6 +1002,7 @@ vpath % $(top_srcdir)/src/c++11
vpath % $(top_srcdir)/src/c++17
vpath % $(top_srcdir)/src/c++20
@ENABLE_FILESYSTEM_TS_TRUE@vpath % $(top_srcdir)/src/filesystem
+@ENABLE_BACKTRACE_TRUE@vpath % $(top_srcdir)/src/libbacktrace
@GLIBCXX_LDBL_COMPAT_TRUE@compatibility-ldbl.lo: compatibility-ldbl.cc
@GLIBCXX_LDBL_COMPAT_TRUE@ $(LTCXXCOMPILE64) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
@GLIBCXX_LDBL_COMPAT_TRUE@compatibility-ldbl.o: compatibility-ldbl.cc
diff --git a/libstdc++-v3/src/c++11/Makefile.in b/libstdc++-v3/src/c++11/Makefile.in
index d20d1ed0216..892c505eddc 100644
--- a/libstdc++-v3/src/c++11/Makefile.in
+++ b/libstdc++-v3/src/c++11/Makefile.in
@@ -210,6 +210,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -221,6 +222,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -265,6 +270,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -320,6 +326,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/src/c++17/Makefile.in b/libstdc++-v3/src/c++17/Makefile.in
index 83d8490a47a..b88917e101a 100644
--- a/libstdc++-v3/src/c++17/Makefile.in
+++ b/libstdc++-v3/src/c++17/Makefile.in
@@ -190,6 +190,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -201,6 +202,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -245,6 +250,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -300,6 +306,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/src/c++20/Makefile.in b/libstdc++-v3/src/c++20/Makefile.in
index 5f0acb48140..197d75b8e4b 100644
--- a/libstdc++-v3/src/c++20/Makefile.in
+++ b/libstdc++-v3/src/c++20/Makefile.in
@@ -185,6 +185,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -196,6 +197,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -240,6 +245,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -295,6 +301,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/src/c++98/Makefile.in b/libstdc++-v3/src/c++98/Makefile.in
index 12c6f2d4c4d..90eff5da986 100644
--- a/libstdc++-v3/src/c++98/Makefile.in
+++ b/libstdc++-v3/src/c++98/Makefile.in
@@ -206,6 +206,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -217,6 +218,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -261,6 +266,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -316,6 +322,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/src/filesystem/Makefile.in b/libstdc++-v3/src/filesystem/Makefile.in
index e0693b194c2..8986b427fba 100644
--- a/libstdc++-v3/src/filesystem/Makefile.in
+++ b/libstdc++-v3/src/filesystem/Makefile.in
@@ -214,6 +214,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -225,6 +226,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -269,6 +274,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -324,6 +330,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/src/libbacktrace/Makefile.am b/libstdc++-v3/src/libbacktrace/Makefile.am
new file mode 100644
index 00000000000..3a3195167b2
--- /dev/null
+++ b/libstdc++-v3/src/libbacktrace/Makefile.am
@@ -0,0 +1,101 @@
+# Makefile.am -- Backtrace in libstdc++ Makefile.
+# Copyright (C) 2012-2013 Free Software Foundation, Inc.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+
+# (1) Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+
+# (2) Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+
+# (3) The name of the author may not be used to
+# endorse or promote products derived from this software without
+# specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+include $(top_srcdir)/fragment.am
+
+toolexeclib_LTLIBRARIES = libstdc++_libbacktrace.la
+
+ACLOCAL_AMFLAGS = -I ../.. -I ../../config
+
+AM_CPPFLAGS = -I $(top_srcdir)/../include -I $(top_srcdir)/../libgcc \
+ -I ../../../libgcc -I .. -I $(top_srcdir) \
+ -I $(top_srcdir)/../libbacktrace \
+ -include $(top_srcdir)/src/libbacktrace/backtrace-rename.h \
+ $(BACKTRACE_CPPFLAGS)
+
+WARN_FLAGS = -W -Wall -Wwrite-strings -Wmissing-format-attribute \
+ -Wcast-qual -Werror
+C_WARN_FLAGS = $(WARN_FLAGS) -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wno-unused-but-set-variable
+CXX_WARN_FLAGS = $(WARN_FLAGS) -Wno-unused-parameter
+AM_CFLAGS = $(C_WARN_FLAGS)
+AM_CFLAGS += $(EXTRA_CFLAGS)
+AM_CXXFLAGS = $(CXX_WARN_FLAGS) -fno-rtti -fno-exceptions
+AM_CXXFLAGS += $(EXTRA_CXXFLAGS)
+
+libstdc___libbacktrace_la_SOURCES = \
+ ../../../libbacktrace/backtrace.h \
+ ../../../libbacktrace/atomic.c \
+ ../../../libbacktrace/dwarf.c \
+ ../../../libbacktrace/fileline.c \
+ ../../../libbacktrace/internal.h \
+ ../../../libbacktrace/posix.c \
+ ../../../libbacktrace/sort.c \
+ ../../../libbacktrace/simple.c \
+ ../../../libbacktrace/state.c \
+ ../../../libiberty/cp-demangle.c
+
+FORMAT_FILES = \
+ ../../../libbacktrace/elf.c \
+ ../../../libbacktrace/unknown.c
+
+VIEW_FILES = \
+ ../../../libbacktrace/read.c \
+ ../../../libbacktrace/mmapio.c
+
+ALLOC_FILES = \
+ ../../../libbacktrace/alloc.c \
+ ../../../libbacktrace/mmap.c
+
+EXTRA_libstdc___libbacktrace_la_SOURCES = \
+ $(FORMAT_FILES) \
+ $(VIEW_FILES) \
+ $(ALLOC_FILES)
+
+libstdc___libbacktrace_la_LIBADD = \
+ $(FORMAT_FILE) \
+ $(VIEW_FILE) \
+ $(ALLOC_FILE)
+
+libstdc___libbacktrace_la_DEPENDENCIES = $(libstdc___libbacktrace_la_LIBADD)
+
+LTCOMPILE = \
+ $(LIBTOOL) --tag CC --tag disable-shared \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=compile $(CC) $(TOPLEVEL_INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $(EXTRA_CFLAGS)
+
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+
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+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=link $(CC) \
+ $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CFLAGS) $(LTLDFLAGS) -o $@
diff --git a/libstdc++-v3/src/libbacktrace/Makefile.in b/libstdc++-v3/src/libbacktrace/Makefile.in
new file mode 100644
index 00000000000..35e5effc70d
--- /dev/null
+++ b/libstdc++-v3/src/libbacktrace/Makefile.in
@@ -0,0 +1,860 @@
+# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
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+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
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+
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+# met:
+
+# (1) Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+
+# (2) Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+
+# (3) The name of the author may not be used to
+# endorse or promote products derived from this software without
+# specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+ if test -z '$(MAKELEVEL)'; then \
+ false; \
+ elif test -n '$(MAKE_HOST)'; then \
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+BASIC_FILE_H = @BASIC_FILE_H@
+CC = @CC@
+CCODECVT_CC = @CCODECVT_CC@
+CCOLLATE_CC = @CCOLLATE_CC@
+CCTYPE_CC = @CCTYPE_CC@
+CFLAGS = @CFLAGS@
+CLOCALE_CC = @CLOCALE_CC@
+CLOCALE_H = @CLOCALE_H@
+CLOCALE_INTERNAL_H = @CLOCALE_INTERNAL_H@
+CMESSAGES_CC = @CMESSAGES_CC@
+CMESSAGES_H = @CMESSAGES_H@
+CMONEY_CC = @CMONEY_CC@
+CNUMERIC_CC = @CNUMERIC_CC@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CPU_DEFINES_SRCDIR = @CPU_DEFINES_SRCDIR@
+CPU_OPT_BITS_RANDOM = @CPU_OPT_BITS_RANDOM@
+CPU_OPT_EXT_RANDOM = @CPU_OPT_EXT_RANDOM@
+CSTDIO_H = @CSTDIO_H@
+CTIME_CC = @CTIME_CC@
+CTIME_H = @CTIME_H@
+CXX = @CXX@
+CXXCPP = @CXXCPP@
+CXXFILT = @CXXFILT@
+CXXFLAGS = @CXXFLAGS@
+CYGPATH_W = @CYGPATH_W@
+C_INCLUDE_DIR = @C_INCLUDE_DIR@
+DBLATEX = @DBLATEX@
+DEBUG_FLAGS = @DEBUG_FLAGS@
+DEFS = @DEFS@
+DOT = @DOT@
+DOXYGEN = @DOXYGEN@
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+DUMPBIN = @DUMPBIN@
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+EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
+FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
+FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
+GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
+GLIBCXX_LIBS = @GLIBCXX_LIBS@
+GREP = @GREP@
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+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
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+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LD = @LD@
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+LIBS = @LIBS@
+LIBTOOL = @LIBTOOL@
+LIPO = @LIPO@
+LN_S = @LN_S@
+LONG_DOUBLE_128_FLAGS = @LONG_DOUBLE_128_FLAGS@
+LONG_DOUBLE_ALT128_COMPAT_FLAGS = @LONG_DOUBLE_ALT128_COMPAT_FLAGS@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
+LTLIBICONV = @LTLIBICONV@
+LTLIBOBJS = @LTLIBOBJS@
+MAINT = @MAINT@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+NM = @NM@
+NMEDIT = @NMEDIT@
+OBJDUMP = @OBJDUMP@
+OBJEXT = @OBJEXT@
+OPTIMIZE_CXXFLAGS = @OPTIMIZE_CXXFLAGS@
+OPT_LDFLAGS = @OPT_LDFLAGS@
+OS_INC_SRCDIR = @OS_INC_SRCDIR@
+OTOOL = @OTOOL@
+OTOOL64 = @OTOOL64@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
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+SYMVER_FILE = @SYMVER_FILE@
+TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
+USE_NLS = @USE_NLS@
+VERSION = @VERSION@
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+VTV_CXXFLAGS = @VTV_CXXFLAGS@
+VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
+VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
+WARN_FLAGS = -W -Wall -Wwrite-strings -Wmissing-format-attribute \
+ -Wcast-qual -Werror
+
+XMLCATALOG = @XMLCATALOG@
+XMLLINT = @XMLLINT@
+XSLTPROC = @XSLTPROC@
+XSL_STYLE_DIR = @XSL_STYLE_DIR@
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+abs_top_srcdir = @abs_top_srcdir@
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+ac_ct_CXX = @ac_ct_CXX@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
+am__leading_dot = @am__leading_dot@
+am__tar = @am__tar@
+am__untar = @am__untar@
+baseline_dir = @baseline_dir@
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+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+check_msgfmt = @check_msgfmt@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+enable_shared = @enable_shared@
+enable_static = @enable_static@
+exec_prefix = @exec_prefix@
+get_gcc_base_ver = @get_gcc_base_ver@
+glibcxx_MOFILES = @glibcxx_MOFILES@
+glibcxx_PCHFLAGS = @glibcxx_PCHFLAGS@
+glibcxx_POFILES = @glibcxx_POFILES@
+glibcxx_builddir = @glibcxx_builddir@
+glibcxx_compiler_pic_flag = @glibcxx_compiler_pic_flag@
+glibcxx_compiler_shared_flag = @glibcxx_compiler_shared_flag@
+glibcxx_cxx98_abi = @glibcxx_cxx98_abi@
+glibcxx_localedir = @glibcxx_localedir@
+glibcxx_lt_pic_flag = @glibcxx_lt_pic_flag@
+glibcxx_prefixdir = @glibcxx_prefixdir@
+glibcxx_srcdir = @glibcxx_srcdir@
+glibcxx_toolexecdir = @glibcxx_toolexecdir@
+glibcxx_toolexeclibdir = @glibcxx_toolexeclibdir@
+gxx_include_dir = @gxx_include_dir@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
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+infodir = @infodir@
+install_sh = @install_sh@
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+libexecdir = @libexecdir@
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+localstatedir = @localstatedir@
+lt_host_flags = @lt_host_flags@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+multi_basedir = @multi_basedir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+port_specific_symbol_files = @port_specific_symbol_files@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+python_mod_dir = @python_mod_dir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target = @target@
+target_alias = @target_alias@
+target_cpu = @target_cpu@
+target_os = @target_os@
+target_vendor = @target_vendor@
+thread_header = @thread_header@
+tmake_file = @tmake_file@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+toplevel_builddir = @toplevel_builddir@
+toplevel_srcdir = @toplevel_srcdir@
+
+# May be used by various substitution variables.
+gcc_version := $(shell @get_gcc_base_ver@ $(top_srcdir)/../gcc/BASE-VER)
+MAINT_CHARSET = latin1
+mkinstalldirs = $(SHELL) $(toplevel_srcdir)/mkinstalldirs
+PWD_COMMAND = $${PWDCMD-pwd}
+STAMP = echo timestamp >
+toolexecdir = $(glibcxx_toolexecdir)
+toolexeclibdir = $(glibcxx_toolexeclibdir)
+@ENABLE_WERROR_FALSE@WERROR_FLAG =
+@ENABLE_WERROR_TRUE@WERROR_FLAG = -Werror
+@ENABLE_EXTERN_TEMPLATE_FALSE@XTEMPLATE_FLAGS =
+@ENABLE_EXTERN_TEMPLATE_TRUE@XTEMPLATE_FLAGS = -fno-implicit-templates
+@GLIBCXX_LDBL_ALT128_COMPAT_FALSE@LDBL_128_FLAGS =
+@GLIBCXX_LDBL_ALT128_COMPAT_TRUE@LDBL_128_FLAGS = $(LONG_DOUBLE_128_FLAGS)
+
+# These bits are all figured out from configure. Look in acinclude.m4
+# or configure.ac to see how they are set. See GLIBCXX_EXPORT_FLAGS.
+CONFIG_CXXFLAGS = \
+ $(SECTION_FLAGS) $(HWCAP_CFLAGS) -frandom-seed=$@ $(LDBL_128_FLAGS)
+
+WARN_CXXFLAGS = \
+ $(WARN_FLAGS) $(WERROR_FLAG) -fdiagnostics-show-location=once
+
+AM_CPPFLAGS = -I $(top_srcdir)/../include -I $(top_srcdir)/../libgcc \
+ -I ../../../libgcc -I .. -I $(top_srcdir) \
+ -I $(top_srcdir)/../libbacktrace \
+ -include $(top_srcdir)/src/libbacktrace/backtrace-rename.h \
+ $(BACKTRACE_CPPFLAGS)
+
+toolexeclib_LTLIBRARIES = libstdc++_libbacktrace.la
+ACLOCAL_AMFLAGS = -I ../.. -I ../../config
+C_WARN_FLAGS = $(WARN_FLAGS) -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wno-unused-but-set-variable
+CXX_WARN_FLAGS = $(WARN_FLAGS) -Wno-unused-parameter
+AM_CFLAGS = $(C_WARN_FLAGS) $(EXTRA_CFLAGS)
+AM_CXXFLAGS = $(CXX_WARN_FLAGS) -fno-rtti -fno-exceptions \
+ $(EXTRA_CXXFLAGS)
+libstdc___libbacktrace_la_SOURCES = \
+ ../../../libbacktrace/backtrace.h \
+ ../../../libbacktrace/atomic.c \
+ ../../../libbacktrace/dwarf.c \
+ ../../../libbacktrace/fileline.c \
+ ../../../libbacktrace/internal.h \
+ ../../../libbacktrace/posix.c \
+ ../../../libbacktrace/sort.c \
+ ../../../libbacktrace/simple.c \
+ ../../../libbacktrace/state.c \
+ ../../../libiberty/cp-demangle.c
+
+FORMAT_FILES = \
+ ../../../libbacktrace/elf.c \
+ ../../../libbacktrace/unknown.c
+
+VIEW_FILES = \
+ ../../../libbacktrace/read.c \
+ ../../../libbacktrace/mmapio.c
+
+ALLOC_FILES = \
+ ../../../libbacktrace/alloc.c \
+ ../../../libbacktrace/mmap.c
+
+EXTRA_libstdc___libbacktrace_la_SOURCES = \
+ $(FORMAT_FILES) \
+ $(VIEW_FILES) \
+ $(ALLOC_FILES)
+
+libstdc___libbacktrace_la_LIBADD = \
+ $(FORMAT_FILE) \
+ $(VIEW_FILE) \
+ $(ALLOC_FILE)
+
+libstdc___libbacktrace_la_DEPENDENCIES = $(libstdc___libbacktrace_la_LIBADD)
+LTCOMPILE = \
+ $(LIBTOOL) --tag CC --tag disable-shared \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=compile $(CC) $(TOPLEVEL_INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $(EXTRA_CFLAGS)
+
+LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
+LINK = \
+ $(LIBTOOL) --tag CC --tag disable-shared \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=link $(CC) \
+ $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CFLAGS) $(LTLDFLAGS) -o $@
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/fragment.am $(am__configure_deps)
+ @for dep in $?; do \
+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+ && { if test -f $@; then exit 0; else break; fi; }; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign --ignore-deps src/libbacktrace/Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --foreign --ignore-deps src/libbacktrace/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ @case '$?' in \
+ *config.status*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+ *) \
+ echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+ cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+ esac;
+$(top_srcdir)/fragment.am $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+backtrace-supported.h: $(top_builddir)/config.status $(srcdir)/backtrace-supported.h.in
+ cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+
+install-toolexeclibLTLIBRARIES: $(toolexeclib_LTLIBRARIES)
+ @$(NORMAL_INSTALL)
+ @list='$(toolexeclib_LTLIBRARIES)'; test -n "$(toolexeclibdir)" || list=; \
+ list2=; for p in $$list; do \
+ if test -f $$p; then \
+ list2="$$list2 $$p"; \
+ else :; fi; \
+ done; \
+ test -z "$$list2" || { \
+ echo " $(MKDIR_P) '$(DESTDIR)$(toolexeclibdir)'"; \
+ $(MKDIR_P) "$(DESTDIR)$(toolexeclibdir)" || exit 1; \
+ echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(toolexeclibdir)'"; \
+ $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(toolexeclibdir)"; \
+ }
+
+uninstall-toolexeclibLTLIBRARIES:
+ @$(NORMAL_UNINSTALL)
+ @list='$(toolexeclib_LTLIBRARIES)'; test -n "$(toolexeclibdir)" || list=; \
+ for p in $$list; do \
+ $(am__strip_dir) \
+ echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(toolexeclibdir)/$$f'"; \
+ $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(toolexeclibdir)/$$f"; \
+ done
+
+clean-toolexeclibLTLIBRARIES:
+ -test -z "$(toolexeclib_LTLIBRARIES)" || rm -f $(toolexeclib_LTLIBRARIES)
+ @list='$(toolexeclib_LTLIBRARIES)'; \
+ locs=`for p in $$list; do echo $$p; done | \
+ sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+ sort -u`; \
+ test -z "$$locs" || { \
+ echo rm -f $${locs}; \
+ rm -f $${locs}; \
+ }
+
+libstdc++_libbacktrace.la: $(libstdc___libbacktrace_la_OBJECTS) $(libstdc___libbacktrace_la_DEPENDENCIES) $(EXTRA_libstdc___libbacktrace_la_DEPENDENCIES)
+ $(AM_V_CCLD)$(LINK) -rpath $(toolexeclibdir) $(libstdc___libbacktrace_la_OBJECTS) $(libstdc___libbacktrace_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+ -rm -f *.$(OBJEXT)
+
+distclean-compile:
+ -rm -f *.tab.c
+
+.c.o:
+ $(AM_V_CC)$(COMPILE) -c -o $@ $<
+
+.c.obj:
+ $(AM_V_CC)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.c.lo:
+ $(AM_V_CC)$(LTCOMPILE) -c -o $@ $<
+
+atomic.lo: ../../../libbacktrace/atomic.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o atomic.lo `test -f '../../../libbacktrace/atomic.c' || echo '$(srcdir)/'`../../../libbacktrace/atomic.c
+
+dwarf.lo: ../../../libbacktrace/dwarf.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o dwarf.lo `test -f '../../../libbacktrace/dwarf.c' || echo '$(srcdir)/'`../../../libbacktrace/dwarf.c
+
+fileline.lo: ../../../libbacktrace/fileline.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o fileline.lo `test -f '../../../libbacktrace/fileline.c' || echo '$(srcdir)/'`../../../libbacktrace/fileline.c
+
+posix.lo: ../../../libbacktrace/posix.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o posix.lo `test -f '../../../libbacktrace/posix.c' || echo '$(srcdir)/'`../../../libbacktrace/posix.c
+
+sort.lo: ../../../libbacktrace/sort.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o sort.lo `test -f '../../../libbacktrace/sort.c' || echo '$(srcdir)/'`../../../libbacktrace/sort.c
+
+simple.lo: ../../../libbacktrace/simple.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o simple.lo `test -f '../../../libbacktrace/simple.c' || echo '$(srcdir)/'`../../../libbacktrace/simple.c
+
+state.lo: ../../../libbacktrace/state.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o state.lo `test -f '../../../libbacktrace/state.c' || echo '$(srcdir)/'`../../../libbacktrace/state.c
+
+cp-demangle.lo: ../../../libiberty/cp-demangle.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o cp-demangle.lo `test -f '../../../libiberty/cp-demangle.c' || echo '$(srcdir)/'`../../../libiberty/cp-demangle.c
+
+elf.lo: ../../../libbacktrace/elf.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o elf.lo `test -f '../../../libbacktrace/elf.c' || echo '$(srcdir)/'`../../../libbacktrace/elf.c
+
+unknown.lo: ../../../libbacktrace/unknown.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o unknown.lo `test -f '../../../libbacktrace/unknown.c' || echo '$(srcdir)/'`../../../libbacktrace/unknown.c
+
+read.lo: ../../../libbacktrace/read.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o read.lo `test -f '../../../libbacktrace/read.c' || echo '$(srcdir)/'`../../../libbacktrace/read.c
+
+mmapio.lo: ../../../libbacktrace/mmapio.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o mmapio.lo `test -f '../../../libbacktrace/mmapio.c' || echo '$(srcdir)/'`../../../libbacktrace/mmapio.c
+
+alloc.lo: ../../../libbacktrace/alloc.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o alloc.lo `test -f '../../../libbacktrace/alloc.c' || echo '$(srcdir)/'`../../../libbacktrace/alloc.c
+
+mmap.lo: ../../../libbacktrace/mmap.c
+ $(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o mmap.lo `test -f '../../../libbacktrace/mmap.c' || echo '$(srcdir)/'`../../../libbacktrace/mmap.c
+
+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
+ -rm -rf .libs _libs
+
+ID: $(am__tagged_files)
+ $(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+ set x; \
+ here=`pwd`; \
+ $(am__define_uniq_tagged_files); \
+ shift; \
+ if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+ test -n "$$unique" || unique=$$empty_fix; \
+ if test $$# -gt 0; then \
+ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+ "$$@" $$unique; \
+ else \
+ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+ $$unique; \
+ fi; \
+ fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+ $(am__define_uniq_tagged_files); \
+ test -z "$(CTAGS_ARGS)$$unique" \
+ || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+ $$unique
+
+GTAGS:
+ here=`$(am__cd) $(top_builddir) && pwd` \
+ && $(am__cd) $(top_srcdir) \
+ && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+ list='$(am__tagged_files)'; \
+ case "$(srcdir)" in \
+ [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+ *) sdir=$(subdir)/$(srcdir) ;; \
+ esac; \
+ for i in $$list; do \
+ if test -f "$$i"; then \
+ echo "$(subdir)/$$i"; \
+ else \
+ echo "$$sdir/$$i"; \
+ fi; \
+ done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+ -rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES)
+installdirs:
+ for dir in "$(DESTDIR)$(toolexeclibdir)"; do \
+ test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+ done
+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:
+
+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 clean-toolexeclibLTLIBRARIES \
+ mostlyclean-am
+
+distclean: distclean-am
+ -rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+ distclean-tags
+
+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-toolexeclibLTLIBRARIES
+
+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-compile mostlyclean-generic \
+ mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-toolexeclibLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
+ clean-libtool clean-toolexeclibLTLIBRARIES cscopelist-am ctags \
+ ctags-am distclean distclean-compile distclean-generic \
+ distclean-libtool distclean-tags 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 install-toolexeclibLTLIBRARIES \
+ installcheck installcheck-am installdirs maintainer-clean \
+ maintainer-clean-generic mostlyclean mostlyclean-compile \
+ mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+ tags tags-am uninstall uninstall-am \
+ uninstall-toolexeclibLTLIBRARIES
+
+.PRECIOUS: Makefile
+
+
+# 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/libstdc++-v3/src/libbacktrace/backtrace-rename.h b/libstdc++-v3/src/libbacktrace/backtrace-rename.h
new file mode 100644
index 00000000000..7a59f166e62
--- /dev/null
+++ b/libstdc++-v3/src/libbacktrace/backtrace-rename.h
@@ -0,0 +1,41 @@
+/* Ensure we don't pollute application namespace. */
+#define backtrace_alloc __glibcxx_backtrace_alloc
+#define backtrace_close __glibcxx_backtrace_close
+#define backtrace_create_state __glibcxx_backtrace_create_state
+#define backtrace_dwarf_add __glibcxx_backtrace_dwarf_add
+#define backtrace_free __glibcxx_backtrace_free
+#define backtrace_get_view __glibcxx_backtrace_get_view
+#define backtrace_initialize __glibcxx_backtrace_initialize
+#define backtrace_open __glibcxx_backtrace_open
+#define backtrace_pcinfo __glibcxx_backtrace_pcinfo
+#define backtrace_qsort __glibcxx_backtrace_qsort
+#define backtrace_release_view __glibcxx_backtrace_release_view
+#define backtrace_simple __glibcxx_backtrace_simple
+#define backtrace_state __glibcxx_backtrace_state
+#define backtrace_syminfo __glibcxx_backtrace_syminfo
+#define backtrace_uncompress_lzma __glibcxx_backtrace_uncompress_lzma
+#define backtrace_uncompress_zdebug __glibcxx_backtrace_uncompress_zdebug
+#define backtrace_vector_finish __glibcxx_backtrace_vector_finish
+#define backtrace_vector_grow __glibcxx_backtrace_vector_grow
+#define backtrace_vector_release __glibcxx_backtrace_vector_release
+#define backtrace_syminfo_to_full_callback __glibcxx_backtrace_syminfo_to_full_callback
+#define backtrace_syminfo_to_full_error_callback __glibcxx_backtrace_syminfo_to_full_error_callback
+
+#define cplus_demangle_builtin_types __glibcxx_cplus_demangle_builtin_types
+#define cplus_demangle_fill_ctor __glibcxx_cplus_demangle_fill_ctor
+#define cplus_demangle_fill_dtor __glibcxx_cplus_demangle_fill_dtor
+#define cplus_demangle_fill_extended_operator __glibcxx_cplus_demangle_fill_extended_operator
+#define cplus_demangle_fill_name __glibcxx_cplus_demangle_fill_name
+#define cplus_demangle_init_info __glibcxx_cplus_demangle_init_info
+#define cplus_demangle_mangled_name __glibcxx_cplus_demangle_mangled_name
+#define cplus_demangle_operators __glibcxx_cplus_demangle_operators
+#define cplus_demangle_print __glibcxx_cplus_demangle_print
+#define cplus_demangle_print_callback __glibcxx_cplus_demangle_print_callback
+#define cplus_demangle_type __glibcxx_cplus_demangle_type
+#define cplus_demangle_v3 __glibcxx_cplus_demangle_v3
+#define cplus_demangle_v3_callback __glibcxx_cplus_demangle_v3_callback
+#define is_gnu_v3_mangled_ctor __glibcxx_is_gnu_v3_mangled_ctor
+#define is_gnu_v3_mangled_dtor __glibcxx_is_gnu_v3_mangled_dtor
+#define java_demangle_v3 __glibcxx_java_demangle_v3
+#define java_demangle_v3_callback __glibcxx_java_demangle_v3_callback
+
diff --git a/libstdc++-v3/src/libbacktrace/backtrace-supported.h.in b/libstdc++-v3/src/libbacktrace/backtrace-supported.h.in
new file mode 100644
index 00000000000..a9a32d77494
--- /dev/null
+++ b/libstdc++-v3/src/libbacktrace/backtrace-supported.h.in
@@ -0,0 +1,61 @@
+/* backtrace-supported.h.in -- Whether stack backtrace is supported.
+ Copyright (C) 2012-2013 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ (1) Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ (2) Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+ (3) The name of the author may not be used to
+ endorse or promote products derived from this software without
+ specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE. */
+
+/* The file backtrace-supported.h.in is used by configure to generate
+ the file backtrace-supported.h. The file backtrace-supported.h may
+ be #include'd to see whether the backtrace library will be able to
+ get a backtrace and produce symbolic information. */
+
+
+/* BACKTRACE_SUPPORTED will be #define'd as 1 if the backtrace library
+ should work, 0 if it will not. Libraries may #include this to make
+ other arrangements. */
+
+#define BACKTRACE_SUPPORTED @BACKTRACE_SUPPORTED@
+
+/* BACKTRACE_USES_MALLOC will be #define'd as 1 if the backtrace
+ library will call malloc as it works, 0 if it will call mmap
+ instead. This may be used to determine whether it is safe to call
+ the backtrace functions from a signal handler. In general this
+ only applies to calls like backtrace and backtrace_pcinfo. It does
+ not apply to backtrace_simple, which never calls malloc. It does
+ not apply to backtrace_print, which always calls fprintf and
+ therefore malloc. */
+
+#define BACKTRACE_USES_MALLOC @BACKTRACE_USES_MALLOC@
+
+/* BACKTRACE_SUPPORTS_THREADS will be #define'd as 1 if the backtrace
+ library is configured with threading support, 0 if not. If this is
+ 0, the threaded parameter to backtrace_create_state must be passed
+ as 0. */
+
+#define BACKTRACE_SUPPORTS_THREADS @BACKTRACE_SUPPORTS_THREADS@
diff --git a/libstdc++-v3/src/libbacktrace/config.h.in b/libstdc++-v3/src/libbacktrace/config.h.in
new file mode 100644
index 00000000000..cdb416e6406
--- /dev/null
+++ b/libstdc++-v3/src/libbacktrace/config.h.in
@@ -0,0 +1,184 @@
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* ELF size: 32 or 64 */
+#undef BACKTRACE_ELF_SIZE
+
+/* XCOFF size: 32 or 64 */
+#undef BACKTRACE_XCOFF_SIZE
+
+/* Define to 1 if you have the __atomic functions */
+#undef HAVE_ATOMIC_FUNCTIONS
+
+/* Define to 1 if you have the `clock_gettime' function. */
+#undef HAVE_CLOCK_GETTIME
+
+/* Define to 1 if you have the declaration of `getpagesize', and to 0 if you
+ don't. */
+#undef HAVE_DECL_GETPAGESIZE
+
+/* Define to 1 if you have the declaration of `strnlen', and to 0 if you
+ don't. */
+#undef HAVE_DECL_STRNLEN
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define if dl_iterate_phdr is available. */
+#undef HAVE_DL_ITERATE_PHDR
+
+/* Define to 1 if you have the fcntl function */
+#undef HAVE_FCNTL
+
+/* Define if getexecname is available. */
+#undef HAVE_GETEXECNAME
+
+/* Define if _Unwind_GetIPInfo is available. */
+#undef HAVE_GETIPINFO
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have KERN_PROC and KERN_PROC_PATHNAME in <sys/sysctl.h>.
+ */
+#undef HAVE_KERN_PROC
+
+/* Define to 1 if you have KERN_PROCARGS and KERN_PROC_PATHNAME in
+ <sys/sysctl.h>. */
+#undef HAVE_KERN_PROC_ARGS
+
+/* Define if -llzma is available. */
+#undef HAVE_LIBLZMA
+
+/* Define to 1 if you have the <link.h> header file. */
+#undef HAVE_LINK_H
+
+/* Define if AIX loadquery is available. */
+#undef HAVE_LOADQUERY
+
+/* Define to 1 if you have the `lstat' function. */
+#undef HAVE_LSTAT
+
+/* Define to 1 if you have the <mach-o/dyld.h> header file. */
+#undef HAVE_MACH_O_DYLD_H
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `readlink' function. */
+#undef HAVE_READLINK
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the __sync functions */
+#undef HAVE_SYNC_FUNCTIONS
+
+/* Define to 1 if you have the <sys/ldr.h> header file. */
+#undef HAVE_SYS_LDR_H
+
+/* Define to 1 if you have the <sys/mman.h> header file. */
+#undef HAVE_SYS_MMAN_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define if -lz is available. */
+#undef HAVE_ZLIB
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#undef LT_OBJDIR
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* The size of `char', as computed by sizeof. */
+#undef SIZEOF_CHAR
+
+/* The size of `int', as computed by sizeof. */
+#undef SIZEOF_INT
+
+/* The size of `long', as computed by sizeof. */
+#undef SIZEOF_LONG
+
+/* The size of `short', as computed by sizeof. */
+#undef SIZEOF_SHORT
+
+/* The size of `void *', as computed by sizeof. */
+#undef SIZEOF_VOID_P
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Enable extensions on AIX 3, Interix. */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable GNU extensions on systems that have them. */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris. */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop. */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris. */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+
+
+/* Enable large inode numbers on Mac OS X 10.5. */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to 1 if on MINIX. */
+#undef _MINIX
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+ this defined. */
+#undef _POSIX_1_SOURCE
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#undef _POSIX_SOURCE
diff --git a/libstdc++-v3/testsuite/20_util/stacktrace/entry.cc b/libstdc++-v3/testsuite/20_util/stacktrace/entry.cc
new file mode 100644
index 00000000000..0bbcabd8fae
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/stacktrace/entry.cc
@@ -0,0 +1,53 @@
+// { dg-options "-std=gnu++23 -lstdc++_libbacktrace" }
+// { dg-do run { target c++23 } }
+// { dg-require-effective-target stacktrace }
+
+#include <stacktrace>
+#include "testsuite_hooks.h"
+
+static_assert( std::regular<std::stacktrace_entry> );
+static_assert( std::three_way_comparable<std::stacktrace_entry> );
+
+constexpr bool
+test_constexpr()
+{
+ std::stacktrace_entry empty;
+ VERIFY( !empty );
+ VERIFY( empty == empty );
+ VERIFY( std::is_eq(empty <=> empty) );
+
+ std::stacktrace_entry::native_handle_type native = empty.native_handle();
+ VERIFY( empty.native_handle() == native );
+
+ return true;
+}
+static_assert( test_constexpr() );
+
+void
+test_members()
+{
+ std::stacktrace_entry empty;
+ VERIFY( empty.description().size() == 0 );
+ VERIFY( empty.source_file().size() == 0 );
+ VERIFY( empty.source_line() == 0 );
+
+ std::stacktrace_entry e1 = std::stacktrace::current().at(0);
+ std::stacktrace_entry e2 = std::stacktrace::current().at(0);
+ VERIFY( e1 != e2 );
+ VERIFY( e1.description() == e2.description() );
+ VERIFY( e1.source_file() == e2.source_file() );
+ VERIFY( e1.source_line() != e2.source_line() );
+
+ std::stacktrace_entry e3 = []{
+ return std::stacktrace::current().at(0);
+ }();
+ VERIFY( e1 != e3 );
+ VERIFY( e1.description() != e3.description() );
+ VERIFY( e1.source_file() == e3.source_file() );
+ VERIFY( e1.source_line() != e3.source_line() );
+}
+
+int main()
+{
+ test_constexpr();
+}
diff --git a/libstdc++-v3/testsuite/20_util/stacktrace/synopsis.cc b/libstdc++-v3/testsuite/20_util/stacktrace/synopsis.cc
new file mode 100644
index 00000000000..72582fa53c6
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/stacktrace/synopsis.cc
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++23" }
+// { dg-do compile { target c++23 } }
+// { dg-require-effective-target stacktrace }
+
+#include <stacktrace>
+
+#ifndef __cpp_lib_stacktrace
+# error "Feature-test macro for stacktrace missing in <stacktrace>"
+#elif __cpp_lib_stacktrace < 202011L
+# error "Feature-test macro for stacktrace has wrong value in <stacktrace>"
+#endif
+
+namespace std
+{
+ class stacktrace_entry;
+
+ template<class Allocator>
+ class basic_stacktrace;
+
+ using stacktrace = basic_stacktrace<allocator<stacktrace_entry>>;
+
+ template<class Allocator>
+ void swap(basic_stacktrace<Allocator>& a, basic_stacktrace<Allocator>& b)
+ noexcept(noexcept(a.swap(b)));
+
+ string to_string(const stacktrace_entry& f);
+
+ template<class Allocator>
+ string to_string(const basic_stacktrace<Allocator>& st);
+
+ template<class charT, class traits>
+ basic_ostream<charT, traits>&
+ operator<<(basic_ostream<charT, traits>& os, const stacktrace_entry& f);
+
+ template<class charT, class traits, class Allocator>
+ basic_ostream<charT, traits>&
+ operator<<(basic_ostream<charT, traits>& os, const basic_stacktrace<Allocator>& st);
+
+ namespace pmr {
+ using stacktrace = basic_stacktrace<polymorphic_allocator<stacktrace_entry>>;
+ }
+
+ template<class T> struct hash;
+ template<> struct hash<stacktrace_entry>;
+ template<class Allocator> struct hash<basic_stacktrace<Allocator>>;
+}
diff --git a/libstdc++-v3/testsuite/20_util/stacktrace/version.cc b/libstdc++-v3/testsuite/20_util/stacktrace/version.cc
new file mode 100644
index 00000000000..ed466be5a36
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/stacktrace/version.cc
@@ -0,0 +1,11 @@
+// { dg-options "-std=gnu++23" }
+// { dg-do preprocess { target c++23 } }
+// { dg-require-effective-target stacktrace }
+
+#include <version>
+
+#ifndef __cpp_lib_stacktrace
+# error "Feature-test macro for stacktrace missing in <version>"
+#elif __cpp_lib_stacktrace < 202011L
+# error "Feature-test macro for stacktrace has wrong value in <version>"
+#endif
diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/Makefile.in
index b442dfe5f20..17080605676 100644
--- a/libstdc++-v3/testsuite/Makefile.in
+++ b/libstdc++-v3/testsuite/Makefile.in
@@ -144,6 +144,7 @@ ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
ALLOCATOR_NAME = @ALLOCATOR_NAME@
+ALLOC_FILE = @ALLOC_FILE@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
@@ -155,6 +156,10 @@ AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
+BACKTRACE_CPPFLAGS = @BACKTRACE_CPPFLAGS@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
BASIC_FILE_CC = @BASIC_FILE_CC@
BASIC_FILE_H = @BASIC_FILE_H@
CC = @CC@
@@ -199,6 +204,7 @@ EXEEXT = @EXEEXT@
EXTRA_CFLAGS = @EXTRA_CFLAGS@
EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@
FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
FREESTANDING_FLAGS = @FREESTANDING_FLAGS@
GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@
GLIBCXX_LIBS = @GLIBCXX_LIBS@
@@ -254,6 +260,7 @@ SYMVER_FILE = @SYMVER_FILE@
TOPLEVEL_INCLUDES = @TOPLEVEL_INCLUDES@
USE_NLS = @USE_NLS@
VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
VTV_CXXFLAGS = @VTV_CXXFLAGS@
VTV_CXXLINKFLAGS = @VTV_CXXLINKFLAGS@
VTV_PCH_CXXFLAGS = @VTV_PCH_CXXFLAGS@
diff --git a/libstdc++-v3/testsuite/lib/libstdc++.exp b/libstdc++-v3/testsuite/lib/libstdc++.exp
index 273a3dae827..0debbea7ee1 100644
--- a/libstdc++-v3/testsuite/lib/libstdc++.exp
+++ b/libstdc++-v3/testsuite/lib/libstdc++.exp
@@ -1346,6 +1346,14 @@ proc check_effective_target_std_allocator_new { } {
}]
}
+# Return 1 if libstdc++ was built as --enable-libstdcxx-backtrace
+proc check_effective_target_stacktrace { } {
+ return [check_v3_target_prop_cached et_stacktrace {
+ set cond "_GLIBCXX_HAVE_STACKTRACE"
+ return [v3_check_preprocessor_condition stacktrace $cond]
+ }]
+}
+
set additional_prunes ""
if { [info exists env(GCC_RUNTEST_PARALLELIZE_DIR)] \
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2022-01-17 12:16 [gcc r12-6635] libstdc++: Define <stacktrace> header for C++23 Jonathan Wakely
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