Regressions on trunk at revision 263200 vs revision 263191

[H.J. Lu (ia32)]

New failures:

New passes:
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -Wc++-compat  (test for excess errors)