[r11-7011 Regression] FAIL: g++.dg/cpp0x/alias-decl-dr1558.C -std=c++17 (test for excess errors) on Linux/x86_64

[sunil.k.pandey]

On Linux/x86_64,

6e0a231a4aa2407bb7167daf98a37795a67364d8 is the first bad commit
commit 6e0a231a4aa2407bb7167daf98a37795a67364d8
Author: Jason Merrill <jason@redhat.com>
Date:   Wed Jan 27 17:15:39 2021 -0500

    c++: alias in qualified-id in template arg [PR98570]

caused

FAIL: g++.dg/cpp0x/alias-decl-52.C  -std=c++17 (internal compiler error)
FAIL: g++.dg/cpp0x/alias-decl-52.C  -std=c++17 (test for excess errors)
FAIL: g++.dg/cpp0x/alias-decl-dr1558.C  -std=c++17 (internal compiler error)
FAIL: g++.dg/cpp0x/alias-decl-dr1558.C  -std=c++17  (test for errors, line 13)
FAIL: g++.dg/cpp0x/alias-decl-dr1558.C  -std=c++17  (test for errors, line 7)
FAIL: g++.dg/cpp0x/alias-decl-dr1558.C  -std=c++17 (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-7011/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/cpp0x/alias-decl-52.C --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=g++.dg/cpp0x/alias-decl-dr1558.C --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)