[Bug tree-optimization/18307] New: merge_pointed_to_info called incorrectly

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

The attached program (preprocessed gengtype) causes merge_pointed_to_info to
be called with the same node as DEST and ORIG.  This is an erroneous use
of that function.

I'm about to commit a check and early exit in that function, to prevent further
breakage, but it really needs assertifying.

-- 
           Summary: merge_pointed_to_info called incorrectly
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nathan at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18307