Regressions on trunk at revision 247459 vs revision 247436

[H.J. Lu ia32 Core i7]

New failures:
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-18.c  (test for warnings, line 119)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-18.c  (test for warnings, line 121)

New passes:
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-18.c  (test for warnings, line 123)