Regressions on trunk at revision 244502 vs revision 244495

[H.J. Lu ia32]

New failures:

New passes:
FAIL: gcc.dg/format/pr78304.c   -DWIDE   (test for warnings, line 9)
FAIL: gcc.dg/format/pr78304.c     (test for warnings, line 9)
FAIL: tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc  (test for errors, line 37)
FAIL: tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc  (test for errors, line 593)
FAIL: tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc (test for excess errors)