[Bug c++/92654] [8/9 Regression] internal compiler error: in lookup_template_class_1

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92654

--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:c2368db567a853b0765833b3bd4e7934f3c6be61

commit r10-6609-gc2368db567a853b0765833b3bd4e7934f3c6be61
Author: Jason Merrill <jason@redhat.com>
Date:   Mon Feb 10 14:12:07 2020 +0100

    c++: Fix constexpr if and braced functional cast.

    While partially instantiating a generic lambda, we can encounter pack
    expansions or constexpr if where we can't actually do the substitution
    immediately, and instead remember a partial instantiation context
    in *_EXTRA_ARGS.  This includes any local_specializations used in the
    pattern or condition.  In this testcase our tree walk wasn't finding the
use
    of i because we weren't walking into the type of a CONSTRUCTOR.  Fixed by
    moving the code for doing that from find_parameter_packs_r into
    cp_walk_subtrees.

    2020-02-11  Jason Merrill  <jason@redhat.com>

        PR c++/92583
        PR c++/92654
        * tree.c (cp_walk_subtrees): Walk CONSTRUCTOR types here.
        * pt.c (find_parameter_packs_r): Not here.