Regressions on trunk at revision 218505 vs revision 218479

[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 0x7ffff86f742c with insufficient space for an object of type 'char'
FAIL: g++.dg/tsan/cond_race.C   -O0  output pattern test, is ==================

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 0x7fff16392ddc with insufficient space for an object of type 'char'