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From: "S. Bosscher" <S.Bosscher@student.tudelft.nl>
To: 'Andrew MacLeod ' <amacleod@redhat.com>,
	'Geoff Keating ' <geoffk@geoffk.org>
Cc: 'gcc mailing list ' <gcc@gcc.gnu.org>
Subject: RE: [tree-ssa][ GC, Virtual operands, and GCing between passes
Date: Thu, 11 Dec 2003 14:27:00 -0000
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> The problem is that gengtype will not allow me to have vevotrs of type
> tree **. It says its an unknown type.
> 
> typedef struct def_optype_d GTY(())
> {
>   unsigned num_defs;
>   tree ** defs;
> } def_optype_t;

Try this with http://gcc.gnu.org/ml/gcc-patches/2003-12/msg00593.html.

If that doesn't work, make it "PTR * GTY((skip ())) defs" (or just
"void **" if you have that patch applied anyway) and cast to tree
where needed.

Gr.
Steven