[Bug middle-end/57287] [4.9 Regression] Bogus uninitialized warning with abnormal control flow

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57287

--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Aug 29 11:20:16 2013
New Revision: 202069

URL: http://gcc.gnu.org/viewcvs?rev=202069&root=gcc&view=rev
Log:
2013-08-29  Richard Biener  <rguent...@suse.de>

    PR middle-end/57287
    * tree-ssa-copy.c (may_propagate_copy): Allow propagating
    of default defs that appear in abnormal PHI nodes.

    * gcc.dg/pr57287-2.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr57287-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-copy.c