[Bug tree-optimization/54735] [4.8 Regression] Segmentation fault in walk_aliased_vdefs_1

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54735



--- Comment #13 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-10-04 
11:48:31 UTC ---

Author: rguenth

Date: Thu Oct  4 11:48:21 2012

New Revision: 192078



URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192078

Log:

2012-10-04  Richard Guenther  <rguent...@suse.de>



    PR middle-end/54735

    * tree-ssa-pre.c (do_pre): Make sure to update virtual SSA form before

    cleaning up the CFG.



    * g++.dg/torture/pr54735.C: New testcase.



Added:

    trunk/gcc/testsuite/g++.dg/torture/pr54735.C

Modified:

    trunk/gcc/ChangeLog

    trunk/gcc/testsuite/ChangeLog

    trunk/gcc/tree-ssa-pre.c