Regressions on trunk at revision 186904 vs revision 186888

[H.J. Lu ia32]

New failures:

New passes:
FAIL: gcc.dg/20011021-1.c  (test for warnings, line 34)
FAIL: gcc.dg/20011021-1.c  (test for warnings, line 41)
FAIL: gcc.dg/20011021-1.c  (test for warnings, line 44)
FAIL: gcc.dg/20011021-1.c (test for excess errors)
FAIL: gcc.dg/20011021-1.c near init (test for warnings, line 27)
FAIL: gcc.dg/m-un-2.c (test for excess errors)
FAIL: gcc.dg/m-un-2.c warning regression 2 (test for warnings, line 12)
FAIL: gcc.dg/missing-field-init-2.c  (test for warnings, line 14)
FAIL: gcc.dg/missing-field-init-2.c  (test for warnings, line 7)
FAIL: gcc.dg/missing-field-init-2.c  (test for warnings, line 8)
FAIL: gcc.dg/missing-field-init-2.c (test for excess errors)