Regressions on trunk at revision 261904 vs revision 261877

[H.J. Lu ia32]

New failures:

New passes:
FAIL: 21_strings/basic_string/modifiers/64422.cc (test for excess errors)
FAIL: 21_strings/basic_string/modifiers/insert/char/1.cc (test for excess errors)
FAIL: 21_strings/basic_string/modifiers/insert/wchar_t/1.cc (test for excess errors)
FAIL: experimental/memory_resource/1.cc (test for excess errors)
FAIL: experimental/memory_resource/70966.cc (test for excess errors)
FAIL: experimental/memory_resource/new_delete_resource.cc (test for excess errors)
FAIL: experimental/memory_resource/null_memory_resource.cc (test for excess errors)
FAIL: experimental/memory_resource/resource_adaptor.cc (test for excess errors)
FAIL: experimental/type_erased_allocator/2.cc (test for excess errors)
FAIL: ext/pb_ds/regression/tree_map_rand.cc (test for excess errors)
FAIL: ext/pb_ds/regression/tree_set_rand.cc (test for excess errors)
FAIL: ext/pb_ds/regression/trie_map_rand.cc (test for excess errors)
FAIL: ext/pb_ds/regression/trie_set_rand.cc (test for excess errors)
FAIL: g++.dg/torture/pr60750.C   -O0  (test for excess errors)
FAIL: g++.dg/torture/pr60750.C   -Os  (test for excess errors)
FAIL: libstdc++-abi/abi_check