[r11-7723 Regression] FAIL: g++.dg/torture/pr85013.C -Os (test for excess errors) on Linux/x86_64

[sunil.k.pandey]

On Linux/x86_64,

c5e55673b486533c4d6d19ac903460f70b48f11a is the first bad commit
commit c5e55673b486533c4d6d19ac903460f70b48f11a
Author: Marek Polacek <polacek@redhat.com>
Date:   Wed Mar 17 19:39:10 2021 -0400

    c++: Add assert to tsubst.

caused

FAIL: g++.dg/torture/pr85013.C   -O0  (internal compiler error)
FAIL: g++.dg/torture/pr85013.C   -O0   (test for errors, line 3)
FAIL: g++.dg/torture/pr85013.C   -O0  (test for excess errors)
FAIL: g++.dg/torture/pr85013.C   -O1  (internal compiler error)
FAIL: g++.dg/torture/pr85013.C   -O1   (test for errors, line 3)
FAIL: g++.dg/torture/pr85013.C   -O1  (test for excess errors)
FAIL: g++.dg/torture/pr85013.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: g++.dg/torture/pr85013.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none   (test for errors, line 3)
FAIL: g++.dg/torture/pr85013.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/torture/pr85013.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (internal compiler error)
FAIL: g++.dg/torture/pr85013.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects   (test for errors, line 3)
FAIL: g++.dg/torture/pr85013.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/torture/pr85013.C   -O2  (internal compiler error)
FAIL: g++.dg/torture/pr85013.C   -O2   (test for errors, line 3)
FAIL: g++.dg/torture/pr85013.C   -O2  (test for excess errors)
FAIL: g++.dg/torture/pr85013.C   -O3 -g  (internal compiler error)
FAIL: g++.dg/torture/pr85013.C   -O3 -g   (test for errors, line 3)
FAIL: g++.dg/torture/pr85013.C   -O3 -g  (test for excess errors)
FAIL: g++.dg/torture/pr85013.C   -Os  (internal compiler error)
FAIL: g++.dg/torture/pr85013.C   -Os   (test for errors, line 3)
FAIL: g++.dg/torture/pr85013.C   -Os  (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-7723/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-torture.exp=g++.dg/torture/pr85013.C --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr85013.C --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr85013.C --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr85013.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)