[Bug c++/35477] New: Compiling error with template subclass of a variadic template class

[Bug c++/35477] New: Compiling error with template subclass of a variadic template class

[rodolfo at rodsoft dot org]

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The following code fails to compile on gcc-4.3.0-RC2 with -std=c++0x

template <class...ARGS> struct tuple {};
template <class A, class B> struct test {};
template <class... ARGS, class B> struct test<B, tuple<ARGS...>>
{
    template <class T> struct inside {};
};

g++ exits saying:
error: parameter pack ‘ARGS’ must be at the end of the template parameter list

on line 5 (where struct inside is defined)

By removing the struct inside definition, it compiles fine.


-- 
           Summary: Compiling error with template subclass of a variadic
                    template class
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rodolfo at rodsoft dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35477

[Bug c++/35477] Compiling error with template subclass of a variadic template class

[jason at gcc dot gnu dot org]

-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jason at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-01-06 16:17:36
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35477

[Bug c++/35477] Compiling error with template subclass of a variadic template class

[jason at gcc dot gnu dot org]

------- Comment #1 from jason at gcc dot gnu dot org  2009-01-07 20:43 -------
Subject: Bug 35477

Author: jason
Date: Wed Jan  7 20:43:01 2009
New Revision: 143166

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143166
Log:
        PR c++/35297
        PR c++/35477
        PR c++/35784
        PR c++/36846
        PR c++/38276
        * pt.c (check_default_tmpl_args): Don't complain about
        out-of-order parameter packs in the enclosing class
        or parameter packs after default args.
        (coerce_template_parms): If we have more than one
        parameter pack, don't flatten argument packs.
        (template_args_equal): Handle argument packs.
        (comp_template_args): Don't flatten argument packs.
        (check_instantiated_arg): Split out from...
        (check_instantiated_args): Here.  Handle arg packs.
        (convert_template_argument): Just check that nontype argument
        packs have the right type.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/variadic92.C
    trunk/gcc/testsuite/g++.dg/cpp0x/variadic93.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/cpp0x/variadic65.C
    trunk/gcc/testsuite/g++.dg/cpp0x/variadic82.C
    trunk/gcc/testsuite/g++.dg/cpp0x/variadic83.C


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35477

[Bug c++/35477] Compiling error with template subclass of a variadic template class

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2009-01-07 20:56 -------
Fixed.


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35477