[Bug c++/88184] [9 Regression] ICE on (invalid) C++ code when compiled with -std=c++2a: unexpected expression ‘f’ of kind template_id_expr

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88184

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Dec  4 19:28:27 2018
New Revision: 266793

URL: https://gcc.gnu.org/viewcvs?rev=266793&root=gcc&view=rev
Log:
        PR c++/88184 - ICE when treating name as template-name.
        * pt.c (lookup_template_function): Always build the TEMPLATE_ID_EXPR
        with unknown_type_node.

        * g++.dg/cpp2a/fn-template17.C: New test.
        * g++.dg/cpp2a/fn-template18.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp2a/fn-template17.C
    trunk/gcc/testsuite/g++.dg/cpp2a/fn-template18.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog