[Bug c++/48320] [C++0x][4.6/4.7 Regression] Template parameter packs cannot be expanded in default template arguments

[dodji at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48320

--- Comment #5 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-09-13 14:39:29 UTC ---
Author: dodji
Date: Tue Sep 13 14:39:25 2011
New Revision: 178812

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178812
Log:
c++/48320 - Template parameter packs cannot be expanded in default template
arguments

gcc/cp/

    PR c++/48320
    * pt.c (template_parameter_pack_p):  Support TEMPLATE_PARM_INDEX
    nodes.  Add a comment.
    (arg_from_parm_pack_p):  New static function, factorized out from
    tsubst_pack_expansion and extended to support non-type parameter
    packs represented with TEMPLATE_PARM_INDEX nodes.
    (tsubst_pack_expansion): Use arg_from_parm_pack_p.

gcc/testsuite/

    PR c++/48320
    * g++.dg/cpp0x/variadic116.C: New test case.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/g++.dg/cpp0x/variadic116.C
Modified:
    branches/gcc-4_6-branch/gcc/cp/ChangeLog
    branches/gcc-4_6-branch/gcc/cp/pt.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog