[Bug c++/84785] [8 Regression] internal compiler error: unexpected expression ‘I’ of kind template_parm_index

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84785

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Sat Mar 10 03:35:17 2018
New Revision: 258409

URL: https://gcc.gnu.org/viewcvs?rev=258409&root=gcc&view=rev
Log:
        PR c++/84785 - ICE with alias template and default targs.

        * pt.c (type_unification_real): Set processing_template_decl if
        saw_undeduced == 1.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/cpp0x/alias-decl-63.C
Modified:
    branches/gcc-7-branch/gcc/cp/ChangeLog
    branches/gcc-7-branch/gcc/cp/pt.c