Regressions on trunk at revision 249060 vs revision 249035

[H.J. Lu Intel64 Core i7]

New failures:
FAIL: gcc.dg/pr78582.c (internal compiler error)
FAIL: gcc.dg/pr78582.c (internal compiler error)
FAIL: gcc.dg/pr78582.c (test for excess errors)
FAIL: gcc.dg/pr78582.c (test for excess errors)

New passes:
FAIL: g++.dg/opt/pr60849.C  -std=gnu++11 (internal compiler error)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++11 (internal compiler error)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++11 (test for excess errors)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++11 (test for excess errors)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++14 (internal compiler error)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++14 (internal compiler error)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++98 (internal compiler error)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++98 (internal compiler error)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++98 (test for excess errors)
FAIL: g++.dg/opt/pr60849.C  -std=gnu++98 (test for excess errors)