[Bug c++/79549] [c++1z] ICE in tsubst, at cp/pt.c:13474 with partial specialization of auto... template parameter pack

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79549

--- Comment #10 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed May 10 15:56:09 2017
New Revision: 247842

URL: https://gcc.gnu.org/viewcvs?rev=247842&root=gcc&view=rev
Log:
        PR c++/79549 - C++17 ICE with non-type auto template parameter pack

        * pt.c (convert_template_argument): Just return an argument pack.
        (coerce_template_parameter_pack, template_parm_to_arg)
        (extract_fnparm_pack, make_argument_pack, tsubst_template_args)
        (tsubst_decl, tsubst, type_unification_real, unify_pack_expansion):
        Don't set the type of a NONTYPE_ARGUMENT_PACK.
        * parser.c (make_char_string_pack, make_string_pack): Likewise.

Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/parser.c
    trunk/gcc/cp/pt.c