On Thu, 16 Oct 2025 at 03:06, Jiang, Haochen wrote:
>
> On Linux/x86_64,
>
> 5dba17a3e709859968f939354e6e5e8d796012d3 is the first bad commit
> commit 5dba17a3e709859968f939354e6e5e8d796012d3
> Author: Jonathan Wakely <[email protected]>
> Date: Thu Oct 9 11:09:34 2025 +0100
>
> libstdc++: Avoid overflow in timeout conversions [PR113327]
>
> caused
>
> FAIL: std/time/freestanding.cc -std=gnu++17 (test for excess errors)
Already fixed by r16-4449-g524bca2e33b560
>
> with GCC configured with
>
> ../../gcc/configure
> --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-4425/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=std/time/freestanding.cc
> --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
> RUNTESTFLAGS="conformance.exp=std/time/freestanding.cc
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
> RUNTESTFLAGS="conformance.exp=std/time/freestanding.cc
> --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
> RUNTESTFLAGS="conformance.exp=std/time/freestanding.cc
> --target_board='unix{-m64\ -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.)
>
