On Linux/x86_64,
7f2bba0d2d08219e79ab6ba543be42ccdb37a760 is the first bad commit
commit 7f2bba0d2d08219e79ab6ba543be42ccdb37a760
Author: Arsen ArsenoviÄ <[email protected]>
Date: Sat Jun 20 19:05:58 2026 +0200
libstdc++: Fix LD_LIBRARY_PATH when testing an installed compiler
caused
FAIL: 27_io/objects/wchar_t/12048-1.cc -std=gnu++20 execution test
FAIL: 27_io/objects/wchar_t/12048-2.cc -std=gnu++20 execution test
FAIL: 27_io/objects/wchar_t/12048-3.cc -std=gnu++20 execution test
FAIL: 27_io/objects/wchar_t/12048-4.cc -std=gnu++20 execution test
FAIL: ext/stdio_sync_filebuf/char/12048-1.cc -std=gnu++20 execution test
FAIL: ext/stdio_sync_filebuf/char/12048-2.cc -std=gnu++20 execution test
FAIL: ext/stdio_sync_filebuf/char/12048-3.cc -std=gnu++20 execution test
FAIL: ext/stdio_sync_filebuf/char/12048-4.cc -std=gnu++20 execution test
FAIL: ext/stdio_sync_filebuf/wchar_t/12048-1.cc -std=gnu++20 execution test
FAIL: ext/stdio_sync_filebuf/wchar_t/12048-2.cc -std=gnu++20 execution test
FAIL: ext/stdio_sync_filebuf/wchar_t/12048-3.cc -std=gnu++20 execution test
FAIL: ext/stdio_sync_filebuf/wchar_t/12048-4.cc -std=gnu++20 execution test
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-2449/usr
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl
--enable-libmpx x86_64-linux --disable-bootstrap
To reproduce:
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-1.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-1.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-1.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-1.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-2.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-2.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-2.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-2.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-3.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-3.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-3.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-3.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-4.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-4.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-4.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=27_io/objects/wchar_t/12048-4.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-1.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-1.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-1.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-1.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-2.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-2.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-2.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-2.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-3.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-3.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-3.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-3.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-4.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-4.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-4.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/char/12048-4.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-1.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-1.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-1.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-1.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-2.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-2.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-2.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-2.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-3.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-3.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-3.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-3.cc
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-4.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-4.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-4.cc
--target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=ext/stdio_sync_filebuf/wchar_t/12048-4.cc
--target_board='unix{-m64\ -march=cascadelake}'"
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