Regressions on 5 at revision 225217 vs revision 225094

[H.J. Lu ia32]

New failures:

New passes:
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++11  (test for errors, line 35)
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++11  (test for warnings, line 29)
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++14  (test for errors, line 35)
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++14  (test for warnings, line 29)
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++98  (test for errors, line 35)
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++98 (test for excess errors)
FAIL: g++.dg/diagnostic/inhibit-warn-2.C  -std=c++98  (test for warnings, line 29)