[Bug tree-optimization/17400] New: out of SSA corruption

[steven at gcc dot gnu dot org]

I'm seeing this ICE on ia64 and amd64 at least. 
 
$ g++ --version 
g++ (GCC) 3.5.0 20040909 (experimental) 
Copyright (C) 2004 Free Software Foundation, Inc. 
This is free software; see the source for copying conditions.  There is NO 
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 
$ g++ -O3 -c t.ii 
 
Different root vars: <D17229> and <D17231> across an abnormal edge from 
BB446->BB564 
t.ii: In member function `void COWIntrusiveReferenceTestCases::n_swap()': 
t.ii:18074: internal compiler error: SSA corruption 
 
 
If anyone can reduce this to a manageable test case, would be 
much appreciated.  *sigh*  That is so hard to do for C++ :-(

-- 
           Summary: out of SSA corruption
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: steven at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17400