Regressions on trunk at revision 218123 vs revision 218104

[H.J. Lu Intel64]

New failures:
FAIL: c-c++-common/ubsan/object-size-9.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  output pattern test, is c-c++-common/ubsan/object-size-9.c:21:11: runtime error: load of address 0x7fff4377967c with insufficient space for an object of type 'char'
FAIL: g++.dg/cpp0x/pr63904.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/cpp0x/pr63904.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/cpp0x/pr63904.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/cpp0x/pr63904.C  -std=c++14 (test for excess errors)

New passes:
FAIL: c-c++-common/ubsan/object-size-9.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  output pattern test, is c-c++-common/ubsan/object-size-9.c:21:11: runtime error: load of address 0x7fff375b4edc with insufficient space for an object of type 'char'