On Linux/x86_64,
837c21e1aab850126e91eee9b8944aa2baca9ad5 is the first bad commit
commit 837c21e1aab850126e91eee9b8944aa2baca9ad5
Author: Tomasz KamiÅski <[email protected]>
Date: Wed Dec 17 10:32:54 2025 +0100
libstdc++: Make declaration and definition of generate_canonical consistent.
caused
FAIL: 26_numerics/random/discrete_distribution/operators/call-default.cc
-std=gnu++20 (test for excess errors)
FAIL: 26_numerics/random/negative_binomial_distribution/operators/58302.cc
-std=gnu++20 (test for excess errors)
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-6205/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=26_numerics/random/discrete_distribution/operators/call-default.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=26_numerics/random/discrete_distribution/operators/call-default.cc
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=26_numerics/random/negative_binomial_distribution/operators/58302.cc
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
RUNTESTFLAGS="conformance.exp=26_numerics/random/negative_binomial_distribution/operators/58302.cc
--target_board='unix{-m32\ -march=cascadelake}'"
(Please directly reply to this email for question about this report.)
(If you met problems with cascadelake related, disabling AVX512F in command
line might save that.)
(However, please make sure that there is no potential problems with AVX512.)
