Regressions on trunk at revision 239789 vs revision 239787

[H.J. Lu ia32 Core i7]

New failures:
FAIL: c-c++-common/Wlogical-not-parentheses-2.c  -std=gnu++11  expected multiline pattern lines 13-17 not found: "\s*r \+= !aaa == bbb;.*\n             \^~\n   r \+= !aaa == bbb;.*\n        \^~~~\n        \(   \).*\n"
FAIL: c-c++-common/Wlogical-not-parentheses-2.c  -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/Wlogical-not-parentheses-2.c  -std=gnu++14  expected multiline pattern lines 13-17 not found: "\s*r \+= !aaa == bbb;.*\n             \^~\n   r \+= !aaa == bbb;.*\n        \^~~~\n        \(   \).*\n"
FAIL: c-c++-common/Wlogical-not-parentheses-2.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/Wlogical-not-parentheses-2.c  -std=gnu++98  expected multiline pattern lines 13-17 not found: "\s*r \+= !aaa == bbb;.*\n             \^~\n   r \+= !aaa == bbb;.*\n        \^~~~\n        \(   \).*\n"
FAIL: c-c++-common/Wlogical-not-parentheses-2.c  -std=gnu++98 (test for excess errors)

New passes: