[r15-6702 Regression] FAIL: c-c++-common/gomp/dispatch-11.c (test for excess errors) on Linux/x86_64

[r15-6702 Regression] FAIL: c-c++-common/gomp/dispatch-11.c (test for excess errors) on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

f79f5b87efc690abc3b8d1b0f927f9348157348b is the first bad commit
commit f79f5b87efc690abc3b8d1b0f927f9348157348b
Author: Tobias Burnus <tburnus@baylibre.com>
Date:   Wed Jan 8 17:27:39 2025 +0100

    OpenMP: Skip declare_variant's append_args it not variant substituted

caused

FAIL: c-c++-common/gomp/dispatch-11.c  at line 45 (test for errors, line 43)
FAIL: c-c++-common/gomp/dispatch-11.c  at line 52 (test for warnings, line 21)
FAIL: c-c++-common/gomp/dispatch-11.c  at line 56 (test for warnings, line 25)
FAIL: c-c++-common/gomp/dispatch-11.c  at line 79 (test for errors, line 77)
FAIL: c-c++-common/gomp/dispatch-11.c  at line 89 (test for errors, line 87)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++17  at line 46 (test for errors, line 43)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++17  at line 53 (test for warnings, line 21)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++17  at line 57 (test for warnings, line 25)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++17  at line 80 (test for errors, line 77)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++17  at line 90 (test for errors, line 87)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++17 (test for excess errors)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++26  at line 46 (test for errors, line 43)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++26  at line 53 (test for warnings, line 21)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++26  at line 57 (test for warnings, line 25)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++26  at line 80 (test for errors, line 77)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++26  at line 90 (test for errors, line 87)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++26 (test for excess errors)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++98  at line 46 (test for errors, line 43)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++98  at line 53 (test for warnings, line 21)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++98  at line 57 (test for warnings, line 25)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++98  at line 80 (test for errors, line 77)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++98  at line 90 (test for errors, line 87)
FAIL: c-c++-common/gomp/dispatch-11.c  -std=c++98 (test for excess errors)
FAIL: c-c++-common/gomp/dispatch-11.c (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-6702/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}/gcc && make check RUNTESTFLAGS="gomp.exp=c-c++-common/gomp/dispatch-11.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=c-c++-common/gomp/dispatch-11.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=c-c++-common/gomp/dispatch-11.c --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=c-c++-common/gomp/dispatch-11.c --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.)