[Bug c++/85006] [7 Regression] [concepts] ICE with bogus parameter pack

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85006

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Apr  5 18:27:37 2018
New Revision: 259145

URL: https://gcc.gnu.org/viewcvs?rev=259145&root=gcc&view=rev
Log:
        PR c++/85006 - -fconcepts ICE with A<auto...> return type

        * pt.c (tsubst_pack_expansion): Allow unsubstituted auto pack.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/concepts/auto4.C
Modified:
    branches/gcc-7-branch/gcc/cp/ChangeLog
    branches/gcc-7-branch/gcc/cp/pt.c