Regressions on native/master at commit r11-3851 vs commit r11-3840 on Linux/x86_64

[H. J. Lu]

New failures:

New passes:
FAIL: g++.dg/asan/asan_test.C   -O2  (test for excess errors)
FAIL: g++.dg/asan/asan_test.C   -O2  (test for excess errors)
FAIL: g++.dg/asan/asan_test.C   -O2  (test for excess errors)