[Bug c++/92068] [8/9/10 Regression] ICE on invalid in process_partial_specialization

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92068

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jason Merrill
<ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:2fa5f9e380b794053a0dd8a8cc63f8bfab370d22

commit r9-8378-g2fa5f9e380b794053a0dd8a8cc63f8bfab370d22
Author: Jason Merrill <ja...@redhat.com>
Date:   Sat Mar 14 17:10:39 2020 -0400

    c++: Fix ICE-after-error on partial spec [92068]

    Here the template arguments for the partial specialization are valid
    arguments for the template, but not for a partial specialization, because
    'd' can never be deduced to anything other than an empty pack.

    gcc/cp/ChangeLog
    2020-03-14  Jason Merrill  <ja...@redhat.com>

            PR c++/92068
            * pt.c (process_partial_specialization): Error rather than crash on
            extra pack expansion.