[Bug c++/11513] New: ICE in push_template_decl_real cp/pt.c:2755, template member functions

[drtr at dial dot pipex dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11513

           Summary: ICE in push_template_decl_real cp/pt.c:2755, template
                    member functions
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: drtr at dial dot pipex dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu

When parsing a member template function of a template, the compiler
crashes on variable definitions of the form 'struct foo b;'.
I think the problem is in the PROCESSING_REAL_TEMPLATE_DECL_P() macro
which gives the wrong result when within member template functions.

See the example below; when parsing struct foo b; the compiler crashes.
This may be caused by the use of PROCESSING_REAL_TEMPLATE_DECL_P() returning
1 in xref_tag() at cp/decl.c: 13297.

template <typename T>
struct bar                      // template_class_depth(bar<T>) = 1
{ 
    struct foo
    {
	int a;
    };

    template <typename U>
    int wom(U c)
    {
 	struct foo b;         // processing_template_decl = 2
    };
};