Regressions on master at commit r11-1860 vs commit r11-1856 on Linux/i686

[H.J. Lu]

New failures:

New passes:
FAIL: g++.dg/cpp1y/lambda-generic-69078-1.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/cpp1y/lambda-generic-69078-1.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/cpp1y/lambda-generic-69078-1.C  -std=gnu++2a (test for excess errors)