[Bug lto/44196] lto1: ICE: tree check: expected field_decl, have type_decl in gimple_types_compatible_p, at gimple.c:3597

[hubicka at ucw dot cz]

------- Comment #7 from hubicka at ucw dot cz  2010-05-19 15:11 -------
Subject: Re:  lto1: ICE: tree check: expected field_decl,
        have type_decl in gimple_types_compatible_p, at gimple.c:3597

> I suppose this is an alias but we fail to clear its body/block tree.  We end
> up refering to some TYPE_DECL in its BLOCK tree from somewhere else
> (but we don't stream that function decl in the end).

For aliases we never clear their body/blocks because they are never finalized.
If this is same_body_alias produced by C++ FE, I guess it should be responsible
for giving us a decl alone.  Overall C++ FE is leaking quite a few bodies/trees
in unfinalized decls.   I used to have aptch to clear them out but it was
rejected
for PCH reasons.

Honza


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44196