[Bug debug/83391] [8 Regression] error: definition in block 9 does not dominate use in block 8

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83391

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Dec 13 18:46:43 2017
New Revision: 255609

URL: https://gcc.gnu.org/viewcvs?rev=255609&root=gcc&view=rev
Log:
        PR bootstrap/83396
        PR debug/83391
        * tree-cfgcleanup.c (remove_forwarder_block): Keep after
        labels debug stmts that can only appear after labels.

        * gcc.dg/torture/pr83396.c: New test.
        * g++.dg/torture/pr83391.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr83391.C
    trunk/gcc/testsuite/gcc.dg/torture/pr83396.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-cfgcleanup.c