Regressions on trunk at revision 216769 vs revision 216733

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: g++.dg/init/enum1.C  -std=gnu++11  (test for errors, line 12)
FAIL: g++.dg/init/enum1.C  -std=gnu++1y  (test for errors, line 12)
FAIL: g++.dg/init/enum1.C  -std=gnu++98  (test for errors, line 12)