[Bug rtl-optimization/47157] [4.6 Regression] ICE: in calc_dfs_tree, at dominance.c:395 with -O

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47157

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011.01.03 10:33:41
         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-03 
10:33:40 UTC ---
Created attachment 22885
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22885
gcc46-pr47157.patch

Untested fix.