Regressions on master at commit r15-3848 vs commit r15-3845 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-3848 vs commit r15-3845 on Linux/x86_64
New failures:

New passes:
FAIL: c-c++-common/gomp/declare-variant-duplicates.c  (test for errors, line 11)
FAIL: c-c++-common/gomp/declare-variant-duplicates.c (test for excess errors)