[Bug c++/55223] New: [C++11] Default lambda expression of a templated class member

["vince.rev at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55223

             Bug #: 55223
           Summary: [C++11] Default lambda expression of a templated class
                    member
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: vince.rev@gmail.com


The following example returns a compiler error "internal compiler error : in
tsubst_copy, at cp/pt.c:11354". It occurs when the default std::function of a
templated class member is used :

//-----------------------------------------------------------
#include <iostream>
#include <functional>

template<typename T> struct C
{
    static T test(std::function<T(int)> f = [](int i){return i;})
    {return f(42);}
};

int main(int argc, char* argv[])
{
    C<int>::test(); // ERROR = internal compiler error : in tsubst_copy, at
cp/pt.c:11354
    C<int>::test([](int i){return i;}); // OK
    return 0;
}
//-----------------------------------------------------------

Tested on GCC 4.6.3 and 4.7.2.