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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/108468] [11/12/13 Regression] ICE in
 most_specialized_partial_spec/builtin_guide_p in C++20 mode
Date: Tue, 14 Mar 2023 22:10:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108468

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:9e44a9932c11f028269f3aa7e3031e703d151b0b

commit r13-6674-g9e44a9932c11f028269f3aa7e3031e703d151b0b
Author: Jason Merrill <jason@redhat.com>
Date:   Tue Mar 14 16:32:31 2023 -0400

    c++: variable tmpl partial specialization [PR108468]

    Generally we expect TPARMS_PRIMARY_TEMPLATE to be set, but sometimes it
    isn't for partial instantiations.  This ought to be improved, but it's
    trivial to work around it in this case.

            PR c++/108468

    gcc/cp/ChangeLog:

            * pt.cc (unify_pack_expansion): Check that TPARMS_PRIMARY_TEMPL=
ATE
            is non-null.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp1y/var-templ78.C: New test.=