Regressions on trunk at revision 245891 vs revision 245861

[H.J. Lu x32]

New failures:

New passes:
FAIL: g++.dg/pr71624.C  -std=gnu++11 (test for excess errors)
FAIL: g++.dg/pr71624.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/pr71624.C  -std=gnu++98 (test for excess errors)
FAIL: g++.dg/pr71633.C  -std=gnu++11 (test for excess errors)
FAIL: g++.dg/pr71633.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/pr71633.C  -std=gnu++98 (test for excess errors)