------- Additional Comments From rguenth at gcc dot gnu dot org  2005-09-18 
15:37 -------
#0  do_structure_copy (lhsop=Variable "lhsop" is not available.
) at tree-ssa-structalias.c:2320
#1  0x000000000086d932 in find_func_aliases (t=0x2a95bc6cd0, ai=Variable "ai" is
not available.
#2  0x000000000086f3e2 in compute_points_to_sets (ai=0xcc3ba0)
    at tree-ssa-structalias.c:3620
#3  0x000000000058179c in compute_may_aliases () at tree-ssa-alias.c:263
#4  0x0000000000852dbc in execute_one_pass (pass=0xca7d80) at passes.c:810

in frame 1 we have

(gdb) call debug_generic_expr(t)
#   SFT.93D.2964_74 = V_MAY_DEF <SFT.93D.2964_71>;
#   SFT.94D.2965_75 = V_MAY_DEF <SFT.94D.2965_72>;
#   VUSE <SFT.83D.2954_25>;
#   VUSE <SFT.84D.2955_26>;
D.2920.D.2564.functor_D.2525 = D.2460

and we pass (D.2920.D.2564.functor_D.2525, D.2460) to do_structure_copy.

This looks like a dup of ... (searching)

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
      Known to fail|                            |4.1.0
   Last reconfirmed|0000-00-00 00:00:00         |2005-09-18 15:37:08
               date|                            |
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23949

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