[Bug middle-end/68375] [6 Regression] ICE in get_loop_body_in_bfs_order when dumping cfg with -fdump-tree-optimized-graph

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68375

--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Tue Nov 24 11:03:51 2015
New Revision: 230798

URL: https://gcc.gnu.org/viewcvs?rev=230798&root=gcc&view=rev
Log:
[cfgloop] PR middle-end/68375: Restructure get_loop_body_in_bfs_order to handle
loops with only a header

        PR middle-end/68375
        * cfgloop.c (get_loop_body_in_bfs_order): Restructure loop to avoid
        bogus assertion.

        * gcc.dg/pr68375.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/pr68375.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgloop.c
    trunk/gcc/testsuite/ChangeLog