On Linux/x86_64,

92d1425ca7804000cfe8aa635cf363a87d362d75 is the first bad commit
commit 92d1425ca7804000cfe8aa635cf363a87d362d75
Author: Patrick Palka <ppa...@redhat.com>
Date:   Wed Jul 19 16:10:20 2023 -0400

    c++: redundant targ coercion for var/alias tmpls

caused

FAIL: g++.dg/gomp/pr58567.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/gomp/pr58567.C  -std=c++17 (test for excess errors)
FAIL: g++.dg/gomp/pr58567.C  -std=c++20 (test for excess errors)
FAIL: g++.dg/gomp/pr58567.C  -std=c++98 (test for excess errors)

with GCC configured with

../../gcc/configure 
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-2655/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=g++.dg/gomp/pr58567.C 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=g++.dg/gomp/pr58567.C 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=g++.dg/gomp/pr58567.C 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=g++.dg/gomp/pr58567.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.)

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