[r16-6183 Regression] FAIL: ext/vstring/requirements/exception/generation_prohibited.cc -std=gnu++20 (test for excess errors) on Linux/x86_64

Haochen Jiang via Gcc-regression <[email protected]>
Newsgroups gmane.comp.gcc.regression,gmane.comp.gcc.patches
Message-ID <[email protected]>
On Linux/x86_64,

e0fa6ea45fbd0280ace8803db1bc30a7d069da9e is the first bad commit
commit e0fa6ea45fbd0280ace8803db1bc30a7d069da9e
Author: Jonathan Wakely <[email protected]>
Date:   Mon Dec 15 16:00:20 2025 +0000

    libstdc++: Update default -std for testsuite

caused

FAIL: ext/random/uniform_inside_sphere_distribution/operators/serialize.cc  -std=gnu++20 (test for excess errors)
FAIL: ext/random/uniform_on_sphere_distribution/operators/generate.cc  -std=gnu++20 (test for excess errors)
FAIL: ext/random/uniform_on_sphere_distribution/operators/serialize.cc  -std=gnu++20 (test for excess errors)
FAIL: ext/random/von_mises_distribution/operators/serialize.cc  -std=gnu++20 (test for excess errors)
FAIL: ext/throw_allocator/check_delete.cc  -std=gnu++20 (test for excess errors)
FAIL: ext/throw_allocator/check_new.cc  -std=gnu++20 (test for excess errors)
FAIL: ext/throw_allocator/variadic_construct.cc  -std=gnu++20 (test for excess errors)
FAIL: ext/vstring/requirements/exception/generation_prohibited.cc  -std=gnu++20 (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-6183/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=ext/random/uniform_inside_sphere_distribution/operators/serialize.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_inside_sphere_distribution/operators/serialize.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_inside_sphere_distribution/operators/serialize.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_inside_sphere_distribution/operators/serialize.cc --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_on_sphere_distribution/operators/generate.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_on_sphere_distribution/operators/generate.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_on_sphere_distribution/operators/generate.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_on_sphere_distribution/operators/generate.cc --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_on_sphere_distribution/operators/serialize.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_on_sphere_distribution/operators/serialize.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_on_sphere_distribution/operators/serialize.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/uniform_on_sphere_distribution/operators/serialize.cc --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/von_mises_distribution/operators/serialize.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/von_mises_distribution/operators/serialize.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/von_mises_distribution/operators/serialize.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/random/von_mises_distribution/operators/serialize.cc --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/check_delete.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/check_delete.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/check_delete.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/check_delete.cc --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/check_new.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/check_new.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/check_new.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/check_new.cc --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/variadic_construct.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/variadic_construct.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/variadic_construct.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/throw_allocator/variadic_construct.cc --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/vstring/requirements/exception/generation_prohibited.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/vstring/requirements/exception/generation_prohibited.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/vstring/requirements/exception/generation_prohibited.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=ext/vstring/requirements/exception/generation_prohibited.cc --target_board='unix{-m64\ -march=cascadelake}'"

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