[r13-3327 Regression] FAIL: libgomp.c++/loop-14.C (test for excess errors) on Linux/x86_64

[r13-3327 Regression] FAIL: libgomp.c++/loop-14.C (test for excess errors) on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

46a8e017d048ec3271bbb898942e3b166c4e8ff3 is the first bad commit
commit 46a8e017d048ec3271bbb898942e3b166c4e8ff3
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Oct 6 13:56:09 2022 +0200

    Vectorization of first-order recurrences

caused

FAIL: libgomp.c++/loop-13.C (internal compiler error: in as_a, at is-a.h:242)
FAIL: libgomp.c++/loop-13.C (test for excess errors)
FAIL: libgomp.c++/loop-14.C (internal compiler error: in as_a, at is-a.h:242)
FAIL: libgomp.c++/loop-14.C (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r13-3327/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++/loop-13.C --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="c++.exp=libgomp.c++/loop-13.C --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="c++.exp=libgomp.c++/loop-14.C --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="c++.exp=libgomp.c++/loop-14.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)