[Bug c++/89913] [8/9/10 Regression] ICE with invalid using declaration

[asutton at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89913

--- Comment #5 from asutton at gcc dot gnu.org ---
Author: asutton
Date: Tue Nov 19 15:26:16 2019
New Revision: 278451

URL: https://gcc.gnu.org/viewcvs?rev=278451&root=gcc&view=rev
Log:
PR c++/89913

gcc/cp/
        * pt.c (get_underlying_template): Exit loop if the original type
        of the alias is null.

gcc/testsuite/
        * g++.dg/cpp2a/pr89913.C: New test.


Added:
    trunk/gcc/testsuite/g++.dg/cpp2a/pr89913.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog