Regressions on trunk at revision 221029 vs revision 221022

[H.J. Lu Intel64 Core i7]

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:21:10: runtime error: load of address 0x7ffedb77935c with insufficient space for an object of type 'char'

New passes:
FAIL: boehm-gc.c/gctest.c -O2 execution test
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:21:10: runtime error: load of address 0x7fff39f1ac8c with insufficient space for an object of type 'char'