Regressions on trunk at revision 266364 vs revision 266353

[H.J. Lu (Intel64)]

New failures:
FAIL: g++.dg/pr83239.C  -std=gnu++98 (test for excess errors)

New passes:
FAIL: g++.dg/guality/pr55665.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  line 23 p == 40
FAIL: g++.dg/guality/pr55665.C   -O2  line 23 p == 40
FAIL: g++.dg/guality/pr55665.C   -O3 -g  line 23 p == 40