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From: kenner@vlsi1.ultra.nyu.edu (Richard Kenner)
Message-Id: <10409072035.AA26895@vlsi1.ultra.nyu.edu>
To: dnovillo@redhat.com
Subject: Re: Problem with operand handling
Cc: gcc@gcc.gnu.org
X-SW-Source: 2004-09/txt/msg00319.txt.bz2

Sorry for the delay in responding.

    >   system__traceback_entries__traceback_entry___XDLU_0__18446744073709551615[1 .. T.2] & decorator_traceback;

    What does this declaration mean?

I think this is how it prints a REFERENCE_TYPE.

    This may help.  Put this test in add_may_alias:

    if (is_gimple_reg (var) || is_gimple_reg (alias))
      abort ();

It aborts, as I think you expected.