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From: "hubicka at ucw dot cz" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/101829] problems with inline + __attribute__
 ((malloc (deallocator)))
Date: Mon, 09 Aug 2021 15:58:10 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101829

--- Comment #2 from Jan Hubicka <hubicka at ucw dot cz> ---
> It might be possible to inline such functions by creating a "stub" call e=
ither
> after or before the inlined function body where the "stub" would just be =
there
> to represent the attributes.
>=20
> Say, inline a 'deallocator' fn
>=20
>   my_free (x);
>=20
> as
>=20
>   <inlined impl>
>   .IFN_STUB_DEALLOCATE (x);
>=20
> or sth like that where those stubs are removed after any diagnostics with
> regard to pairing of malloc/free have been issued (not sure where that
> currently
> happens).

We have similar issue with functions calling alloca (that we may inline
if was able to insert stack restore).  I was always lazy to implement
this since we need to also insert it on the EH cleanup edges, but
perhaps it is time to learn inliner about such tricks...

Honza=