[Bug c++/71737] [5/6/7 Regression] ICE following 2x pack expansion in non-pack with template alias

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71737

--- Comment #10 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Fri Feb 10 13:14:05 2017
New Revision: 245327

URL: https://gcc.gnu.org/viewcvs?rev=245327&root=gcc&view=rev
Log:
/cp
2017-02-10  Paolo Carlini  <paolo.carl...@oracle.com>

        PR c++/71737
        * pt.c (tsubst_decl): Don't try to preserve a typedef that names
        an error_mark_node as type.

/testsuite
2017-02-10  Paolo Carlini  <paolo.carl...@oracle.com>

        PR c++/71737
        * g++.dg/cpp0x/pr71737.C: New.

Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/cpp0x/pr71737.C