[r14-6468 Regression] FAIL: std/time/year/io.cc -std=gnu++26 execution test on Linux/x86_64

[r14-6468 Regression] FAIL: std/time/year/io.cc -std=gnu++26 execution test on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

a01462ae8bafa86e7df47a252917ba6899d587cf is the first bad commit
commit a01462ae8bafa86e7df47a252917ba6899d587cf
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Mon Dec 11 15:33:59 2023 +0000

    libstdc++: Fix std::format output of %C for negative years

caused

FAIL: std/time/year/io.cc  -std=gnu++20 execution test
FAIL: std/time/year/io.cc  -std=gnu++26 execution test

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-6468/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/year/io.cc --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=std/time/year/io.cc --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=std/time/year/io.cc --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=std/time/year/io.cc --target_board='unix{-m64\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me at haochen dot jiang at intel.com.)
(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.)

Re: [r14-6468 Regression] FAIL: std/time/year/io.cc -std=gnu++26 execution test on Linux/x86_64

[Jonathan Wakely]

On Wed, 13 Dec 2023 at 10:51, haochen.jiang
<haochenj@ecsmtp.sh.intel.com> wrote:
>
> On Linux/x86_64,
>
> a01462ae8bafa86e7df47a252917ba6899d587cf is the first bad commit
> commit a01462ae8bafa86e7df47a252917ba6899d587cf
> Author: Jonathan Wakely <jwakely@redhat.com>
> Date:   Mon Dec 11 15:33:59 2023 +0000
>
>     libstdc++: Fix std::format output of %C for negative years
>
> caused
>
> FAIL: std/time/year/io.cc  -std=gnu++20 execution test
> FAIL: std/time/year/io.cc  -std=gnu++26 execution test
>
> with GCC configured with
>
> ../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-6468/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/year/io.cc --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=std/time/year/io.cc --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=std/time/year/io.cc --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check RUNTESTFLAGS="conformance.exp=std/time/year/io.cc --target_board='unix{-m64\ -march=cascadelake}'"
>
> (Please do not reply to this email, for question about this report, contact me at haochen dot jiang at intel.com.)
> (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.)

Thanks, fixed at r14-6493-gad537ccd525fd3