[r14-88 Regression] FAIL: g++.dg/ext/int128-8.C -std=gnu++20 (test for excess errors) on Linux/x86_64

[haochen.jiang via Gcc-patches]

On Linux/x86_64,

ed32ec26697cc77492d094b31a0d2eebc0535644 is the first bad commit
commit ed32ec26697cc77492d094b31a0d2eebc0535644
Author: Jason Merrill <ja...@redhat.com>
Date:   Tue Apr 18 17:12:17 2023 -0400

    c++: fix 'unsigned __int128_t' semantics [PR108099]

caused

FAIL: g++.dg/ext/int128-8.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/ext/int128-8.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/ext/int128-8.C  -std=gnu++20 (test for excess errors)

with GCC configured with

../../gcc/configure 
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-88/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="dg.exp=g++.dg/ext/int128-8.C 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=g++.dg/ext/int128-8.C 
--target_board='unix{-m32\ -march=cascadelake}'"

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