[r16-6913 Regression] FAIL: libgomp.c/pr122356.c execution test on Linux/x86_64

Haochen Jiang via Gcc-regression <[email protected]>
Newsgroups gmane.comp.gcc.regression,gmane.comp.gcc.patches
Message-ID <[email protected]>
On Linux/x86_64,

304d08fea9e68c5b4806532816b58d33a15a917d is the first bad commit
commit 304d08fea9e68c5b4806532816b58d33a15a917d
Author: Matthew Malcolmson <[email protected]>
Date:   Tue Jan 20 03:54:51 2026 +0000

    libgomp: Ensure memory sync after performing tasks

caused

FAIL: libgomp.c/pr122356.c execution test

with GCC configured with

../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-6913/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/libgomp/testsuite && make check RUNTESTFLAGS="c.exp=libgomp.c/pr122356.c --target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="c.exp=libgomp.c/pr122356.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="c.exp=libgomp.c/pr122356.c --target_board='unix{-m64}'"
$ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="c.exp=libgomp.c/pr122356.c --target_board='unix{-m64\ -march=cascadelake}'"

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(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.)
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