On Linux/x86_64,
90dde804626f1344f0d63827709406b135433272 is the first bad commit
commit 90dde804626f1344f0d63827709406b135433272
Author: Giuseppe D'Angelo <[email protected]>
Date: Mon Dec 9 01:32:27 2024 +0100
libstdc++: Handle cv-qualified types in atomic and atomic_ref [PR115402]
caused
FAIL: 29_atomics/atomic_ref/float.cc -std=gnu++20 execution test
FAIL: 29_atomics/atomic_ref/float.cc -std=gnu++26 execution test
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-4349/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=29_atomics/atomic_ref/float.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=29_atomics/atomic_ref/float.cc
--target_board='unix{-m32\ -march=cascadelake}'"
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(However, please make sure that there is no potential problems with AVX512.)