Regressions on trunk at revision 208681 vs revision 208668

[H.J. Lu ia32 Core i7]

New failures:

New passes:
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++11  (test for warnings, line 88)
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++11  (test for warnings, line 92)
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++1y (test for excess errors)
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++1y  (test for warnings, line 88)
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++1y  (test for warnings, line 92)
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++98  (test for warnings, line 88)
FAIL: c-c++-common/Wcast-qual-1.c -std=gnu++98  (test for warnings, line 92)