Regressions on master at commit r11-551 vs commit r11-540 on Linux/x86_64

[H.J. Lu]

New failures:

New passes:
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++17 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++17 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++17 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++2a (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++2a (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++2a (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -Wc++-compat  (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -Wc++-compat  (test for excess errors)
FAIL: c-c++-common/cpp/cmd-1.c  -Wc++-compat  (test for excess errors)
FAIL: g++.target/i386/pr95229.C  -std=gnu++98 (test for excess errors)
FAIL: g++.target/i386/pr95229.C  -std=gnu++98 (test for excess errors)
FAIL: g++.target/i386/pr95229.C  -std=gnu++98 (test for excess errors)