On Linux/x86_64,

1580fc764423bf89e9b853aaa8c65999e37ccb8b is the first bad commit
commit 1580fc764423bf89e9b853aaa8c65999e37ccb8b
Author: Tobias Burnus <tob...@codesourcery.com>
Date:   Tue May 4 13:38:03 2021 +0200

    OpenMP: Support complex/float in && and || reduction

caused

FAIL: g++.dg/gomp/clause-3.C  -std=c++14  (test for errors, line 59)
FAIL: g++.dg/gomp/clause-3.C  -std=c++17  (test for errors, line 59)
FAIL: g++.dg/gomp/clause-3.C  -std=c++2a  (test for errors, line 59)
FAIL: g++.dg/gomp/clause-3.C  -std=c++98  (test for errors, line 59)

with GCC configured with

../../gcc/configure 
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-438/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/clause-3.C --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=g++.dg/gomp/clause-3.C --target_board='unix{-m32\ 
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=g++.dg/gomp/clause-3.C --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=g++.dg/gomp/clause-3.C --target_board='unix{-m64\ 
-march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me 
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