[Bug tree-optimization/16689] New: [3.5 regression] ICE in add_may_alias, at tree-ssa-alias.c:1665

["bangerth at dealii dot org" <gcc-bugzilla at gcc dot gnu dot org>]

This is likely related to PR 16688 since it was introduced on the 
same day. Nevertheless, the bug appears in a different spot: 
 
deal.II/deal.II> c++ -O2 -c grid_in.ii       
grid_in.ii: In member function `void GridIn<dim>::read_ucd(std::istream&) 
[with int dim = 2]': 
grid_in.ii:39116: internal compiler error: in add_may_alias, at 
tree-ssa-alias.c:1665 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://gcc.gnu.org/bugs.html> for instructions. 
 
 
The last patch I have in my tree is this one: 
  2004-07-22  Diego Novillo  <dnovillo@redhat.com> 
 
        * tree-into-ssa.c (set_livein_block): Fix typo in comment. 
        (rewrite_ssa_into_ssa): Start iterating over SSA names at 1. 
        Release SSA names that have been re-renamed. 
        * tree-phinodes.c (make_phi_node): Set same TREE_TYPE as the 
        variable. 
        ... 
 
It has a lot of alias stuff in it, so I suspect that it is already the 
one we're looking for. Diego, would you mind taking a look at this PR 
and PR 16688? 
 
W.

-- 
           Summary: [3.5 regression] ICE in add_may_alias, at tree-ssa-
                    alias.c:1665
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bangerth at dealii dot org
                CC: dnovillo at redhat dot com,gcc-bugs at gcc dot gnu dot
                    org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16689