[Bug tree-optimization/48772] [4.7 Regression] ICE: SIGSEGV in walk_non_aliased_vuses (gimple.h:1100) with -O -fnon-call-exceptions -fno-tree-ccp -fno-tree-dce

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48772

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011.04.26 15:09:22
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.7.0
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-04-26 
15:09:22 UTC ---
Mine.

We are destroying the virtual operand web as it was present during
value-numbering
by updating stmts during elimination.  In this case by updating a call stmt
that was promoted from an indirect virtual call to a direct call.