Regressions on master at commit r16-6448 vs commit r16-6444 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r16-6448 vs commit r16-6444 on Linux/x86_64
New failures:

New passes:
FAIL: gcc.dg/pr123295-1.c (test for excess errors)