Regressions on trunk at revision 218692 vs revision 218685

[H.J. Lu Intel64]

New failures:
FAIL: 20_util/shared_ptr/creation/58594-no-rtti.cc (test for excess errors)
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 0x7fff070c49cc with insufficient space for an object of type 'char'

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 0x7fffb0332bdc with insufficient space for an object of type 'char'