[Bug tree-optimization/71643] [7 Regression] internal compiler error: in redirect_eh_edge_1, at tree-eh.c:2318 after r237427

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71643

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Jun 25 17:23:02 2016
New Revision: 237783

URL: https://gcc.gnu.org/viewcvs?rev=237783&root=gcc&view=rev
Log:
        PR tree-optimization/71643
        * tree-ssa-tail-merge.c (find_clusters_1): Ignore basic blocks with
        EH preds.

        * tree-ssa-tail-merge.c (deps_ok_for_redirect_from_bb_to_bb): Don't
        leak a bitmap if dep_bb is NULL.

        * g++.dg/opt/pr71643.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/opt/pr71643.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-tail-merge.c