[Bug middle-end/52939] [4.7/4.8 Regression] ice in gimple_get_virt_method_for_binfo with -O3

[jamborm at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52939

--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-04-16 10:02:12 UTC ---
Author: jamborm
Date: Mon Apr 16 10:02:04 2012
New Revision: 186489

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186489
Log:
2012-04-16  Martin Jambor  <mjambor@suse.cz>

    PR middle-end/52939
    * gimple-fold.c (gimple_get_virt_method_for_binfo): Bail out if
    fold_ctor_reference returns a zero constant.

    * testsuite/g++.dg/ipa/pr52939.C: New test.


Added:
    branches/gcc-4_7-branch/gcc/testsuite/g++.dg/ipa/pr52939.C
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/gimple-fold.c
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog