Regressions on trunk at revision 221776 vs revision 221770

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: c-c++-common/pr65556.c  -std=c++11 (test for excess errors)
FAIL: c-c++-common/pr65556.c  -std=c++14 (test for excess errors)
FAIL: c-c++-common/pr65556.c  -std=c++98 (test for excess errors)
FAIL: c-c++-common/pr65556.c  -Wc++-compat  (test for excess errors)