On Linux/x86_64, 93fc47746815ea9dac413322fcade2931f757e7f is the first bad commit commit 93fc47746815ea9dac413322fcade2931f757e7f Author: Jonathan Wakely <jwak...@redhat.com> Date: Thu Nov 12 21:25:14 2020 +0000
libstdc++: Optimise std::future::wait_for and fix futex polling caused FAIL: 30_threads/future/members/poll.cc execution test with GCC configured with ../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-4958/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=30_threads/future/members/poll.cc --target_board='unix{-m32}'" $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=30_threads/future/members/poll.cc --target_board='unix{-m32\ -march=cascadelake}'" $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=30_threads/future/members/poll.cc --target_board='unix{-m64\ -march=cascadelake}'" (Please do not reply to this email, for question about this report, contact me at skpgkp2 at gmail dot com)