Regressions on native/master at commit r11-3342 vs commit r11-3334 on Linux/x86_64

[H. J. Lu]

New failures:
FAIL: g++.dg/ext/timevar1.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/ext/timevar1.C  -std=gnu++2a (test for excess errors)
FAIL: g++.dg/ext/timevar1.C  -std=gnu++98 (test for excess errors)
FAIL: g++.dg/ext/timevar2.C  -std=gnu++98 (test for excess errors)

New passes:
FAIL: g++.dg/ext/timevar2.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/ext/timevar2.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/ext/timevar2.C  -std=gnu++2a (test for excess errors)