Regressions on trunk at revision 191830 vs revision 191829

[H.J. Lu Intel64]

New failures:
FAIL: c-c++-common/Wunused-local-typedefs-2.c  -Wc++-compat  (test for excess errors)
FAIL: c-c++-common/Wunused-local-typedefs-2.c  -Wc++-compat  (test for excess errors)

New passes: