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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/106833] Handle OPAQUE_TYPE in
 gimple_canonical_types_compatible_p
Date: Mon, 05 Sep 2022 16:25:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106833

--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #6)
> Ah, that special "mode".  I think verify_types shouldn't do anything
> for OPAQUE_TYPES or alternatively trust the targets setup of
> TYPE_MAIN_VARIANT/TYPE_CANONICAL.  Maybe verify TYPE_CANONICAL
> and TYPE_MAIN_VARIANT are also OPAQUE_TYPE.

It's probably easiest to just test if the TYPE_MODEs match, for OPAQUE_TYPE=
s?

> So the solution should be fully inside verify_type.

Yeah.  OPAQUE might be a "hack" (or call it an "invention" :-) ), but the n=
ice
thing about is it is very self-contained, no interactions anywhere.  That is
the
point even :-)=