Regressions on trunk at revision 262909 vs revision 262905

[H.J. Lu x32]

New failures:

New passes:
FAIL: c-c++-common/Warray-bounds-2.c  -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/Warray-bounds-2.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/Warray-bounds-2.c  -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/Warray-bounds-2.c  -Wc++-compat  (test for excess errors)
FAIL: gcc.dg/Warray-bounds-31.c (test for excess errors)
FAIL: gcc.dg/Warray-bounds-32.c  (test for warnings, line 28)