[Bug tree-optimization/47443] [4.6 Regression] ICE: SSA name in freelist but still referenced or SIGSEGV with -fstack-check=generic

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47443

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-25 
19:51:02 UTC ---
Author: jakub
Date: Tue Jan 25 19:50:56 2011
New Revision: 169250

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169250
Log:
    PR tree-optimization/47265
    PR tree-optimization/47443
    * tree-ssa-forwprop.c (forward_propagate_addr_expr): Return false
    if name still has some uses.

    * gcc.c-torture/compile/pr47265.c: New test.
    * gcc.dg/pr47443.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr47265.c
    trunk/gcc/testsuite/gcc.dg/pr47443.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-forwprop.c