Regressions on master at commit r12-7501 vs commit r12-7472 on Linux/i686

[H.J. Lu]

New failures:

New passes:
FAIL: gcc.dg/deprecated.c (test for excess errors)
FAIL: gcc.dg/deprecated.c  (test for warnings, line 28)
FAIL: g++.dg/warn/Wstringop-overflow-6.C  -std=gnu++20 (test for excess errors)