Regressions on 4.5 at revision 184569 vs revision 184123

[H.J. Lu ia32]

New failures:
FAIL: g++.dg/cpp0x/rv4n.C  (test for warnings, line 281)
FAIL: g++.dg/ext/anon-struct1.C  (test for errors, line 48)
FAIL: g++.dg/func-args-1.C  (test for errors, line 48)
FAIL: g++.dg/init/struct2.C (test for excess errors)
FAIL: g++.dg/opt/pr19650.C (test for excess errors)
FAIL: g++.dg/torture/pr40389.C  -O1  (test for excess errors)
FAIL: g++.old-deja/g++.jason/redecl1.C  (test for errors, line 6)
FAIL: g++.old-deja/g++.law/arg3.C (test for excess errors)
FAIL: g++.old-deja/g++.other/for2.C (test for excess errors)
FAIL: g++.old-deja/g++.other/friend1.C  (test for errors, line 63)
FAIL: g++.old-deja/g++.other/static1.C (test for excess errors)

New passes:
FAIL: g++.dg/debug/debug7.C -gcoff (test for excess errors)
FAIL: g++.dg/debug/dwarf2-1.C -gdwarf-2 -g1 -O3 (test for excess errors)
FAIL: g++.dg/torture/pr37421.C  -O2 -fwhopr  (test for excess errors)
FAIL: g++.dg/torture/pr38747.C  -O3 -g  (test for excess errors)
FAIL: g++.old-deja/g++.mike/rtti3.C (test for excess errors)
FAIL: g++.old-deja/g++.other/linkage4.C (test for excess errors)
FAIL: g++.old-deja/g++.pt/friend21.C (test for excess errors)