Regressions on trunk at revision 258904 vs revision 258886

[H.J. Lu Intel64]

New failures:
FAIL: g++.dg/inherit/override-attribs.C  -std=c++11  (test for errors, line 8)
FAIL: g++.dg/inherit/override-attribs.C  -std=c++14  (test for errors, line 8)
FAIL: g++.dg/inherit/override-attribs.C  -std=c++98  (test for errors, line 8)

New passes: