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

[dnovillo at gcc dot gnu.org]

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

--- Comment #4 from Diego Novillo <dnovillo at gcc dot gnu.org> 2011-02-02 17:47:40 UTC ---
Author: dnovillo
Date: Wed Feb  2 17:47:35 2011
New Revision: 169589

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169589
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:
    branches/google/integration/gcc/testsuite/gcc.c-torture/compile/pr47265.c
    branches/google/integration/gcc/testsuite/gcc.dg/pr47443.c
Modified:
    branches/google/integration/gcc/ChangeLog
    branches/google/integration/gcc/testsuite/ChangeLog
    branches/google/integration/gcc/tree-ssa-forwprop.c