[r11-7866 Regression] FAIL: g++.dg/modules/xtreme-header_a.H -std=c++2b (test for excess errors) on Linux/x86_64

[sunil.k.pandey]

On Linux/x86_64,

d82797420c2238e31a7a25fe6db6bd05cd37224d is the first bad commit
commit d82797420c2238e31a7a25fe6db6bd05cd37224d
Author: Nathan Sidwell <nathan@acm.org>
Date:   Fri Mar 26 10:46:31 2021 -0700

    c++: imported templates and alias-template changes [PR 99283]

caused

FAIL: g++.dg/modules/xtreme-header-5_a.H module-cmi  (gcm.cache/$srcdir/g++.dg/modules/xtreme-header-5_a.H.gcm)
FAIL: g++.dg/modules/xtreme-header-5_a.H -std=c++17 (internal compiler error)
FAIL: g++.dg/modules/xtreme-header-5_a.H -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/xtreme-header-5_a.H -std=c++2a (internal compiler error)
FAIL: g++.dg/modules/xtreme-header-5_a.H -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/xtreme-header-5_a.H -std=c++2b (internal compiler error)
FAIL: g++.dg/modules/xtreme-header-5_a.H -std=c++2b (test for excess errors)
FAIL: g++.dg/modules/xtreme-header_a.H module-cmi  (gcm.cache/$srcdir/g++.dg/modules/xtreme-header_a.H.gcm)
FAIL: g++.dg/modules/xtreme-header_a.H -std=c++17 (internal compiler error)
FAIL: g++.dg/modules/xtreme-header_a.H -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/xtreme-header_a.H -std=c++2a (internal compiler error)
FAIL: g++.dg/modules/xtreme-header_a.H -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/xtreme-header_a.H -std=c++2b (internal compiler error)
FAIL: g++.dg/modules/xtreme-header_a.H -std=c++2b (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-7866/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="modules.exp=g++.dg/modules/xtreme-header-5_a.H --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="modules.exp=g++.dg/modules/xtreme-header-5_a.H --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="modules.exp=g++.dg/modules/xtreme-header_a.H --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="modules.exp=g++.dg/modules/xtreme-header_a.H --target_board='unix{-m64\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me at skpgkp2 at gmail dot com)