Regressions on trunk at revision 265861 vs revision 265856

[H.J. Lu]

New failures:
FAIL: gcc.dg/pr87874.c (test for excess errors)
FAIL: gcc.dg/warn-strlen-no-nul.c 3 blank line(s) in output
FAIL: gcc.dg/warn-strlen-no-nul.c 3 blank line(s) in output

New passes: