Regressions on master at commit r17-2640 vs commit r17-2633 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r17-2640 vs commit r17-2633 on Linux/x86_64
New failures:

New passes:
FAIL: g++.old-deja/g++.brendan/overload2.C  -std=c++98 execution test
FAIL: g++.old-deja/g++.brendan/overload2.C  -std=c++98 (test for excess errors)