[Bug debug/49090] New: provide a way to recognize defaulted template parameters

[tromey at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49090

           Summary: provide a way to recognize defaulted template
                    parameters
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: debug
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: tro...@gcc.gnu.org


Consider the test case:

template<typename T1, typename T2 = int>
struct K
{
  T1 v1;
  T2 v2;
};

K<int> k;
K<double, double> k2;


It would be nice if the resulting DWARF indicated that k's type
had a defaulted template parameter.  This way, GDB could optionally omit
this parameter when displaying this type.