Regressions on master at commit r11-7438 vs commit r11-7431 on Linux/x86_64

[H.J. Lu]

New failures:

New passes:
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++17 (test for excess errors)
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++17 (test for excess errors)
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++17 (test for excess errors)
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++2a (test for excess errors)
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++2a (test for excess errors)
FAIL: g++.dg/ext/attr-lambda3.C  -std=c++2a (test for excess errors)