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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/105227] [12 Regression] ICE in
 type_in_anonymous_namespace_p, at ipa-utils.h:233
Date: Mon, 11 Apr 2022 17:39:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105227

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-04-11
           Priority|P3                          |P1
          Component|c++                         |tree-optimization
                 CC|                            |jason at gcc dot gnu.org

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
Confirmed.

The problem seems to be that free_lang_data_in_decl changes DECL_CONTEXT of
Klass::implementation to be the global scope because it isn't virtual, but
eventually update_vtable_references changes the vtable entry for Klass::mag=
ic
to refer to (a local alias for) Klass::implementation, so maybe_record_node=
's
attempts to ask about its class context fail.

Currently free_lang_data_in_decl works around this issue for destructors
specifically, but not for other member functions.

Not sure if the component should be tree-optimization or lto, but it isn't a
front-end issue.=