[Bug c++/91923] [9/10 Regression] Failure-to-SFINAE with class type NTTP in C++17

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91923

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sat Sep 28 11:36:36 2019
New Revision: 276248

URL: https://gcc.gnu.org/viewcvs?rev=276248&root=gcc&view=rev
Log:
        PR c++/91923 - failure-to-SFINAE with class type NTTP in C++17.
        * pt.c (invalid_nontype_parm_type_p): Only emit errors when
        tf_error.

        * g++.dg/cpp0x/nontype5.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/nontype5.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog