Regressions on trunk at revision 254648 vs revision 254623

[H.J. Lu ia32 Core i7]

New failures:
FAIL: g++.dg/cpp0x/lambda/lambda-switch.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/cpp0x/lambda/lambda-switch.C  -std=c++11  (test for warnings, line 19)
FAIL: g++.dg/cpp0x/lambda/lambda-switch.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/cpp0x/lambda/lambda-switch.C  -std=c++14  (test for warnings, line 19)

New passes:
FAIL: 27_io/basic_fstream/open/char/path.cc execution test
FAIL: 27_io/basic_ifstream/open/char/path.cc execution test
FAIL: 27_io/basic_ofstream/open/char/path.cc execution test
FAIL: gcc.dg/tree-prof/cmpsf-1.c scan-tree-dump-not dom2 "Invalid sum"
FAIL: gcc.target/i386/force-indirect-call-2.c scan-assembler-times call[ \\t]+\\*% 2 (found 3 times)
FAIL: gcc.target/i386/force-indirect-call-2.c scan-assembler-times jmp[ \\t]+\\*% 1 (found 0 times)
FAIL: gcc.target/i386/force-indirect-call-3.c (test for excess errors)