Apple

I am porting some code to XCode 2.4, and I’m having trouble getting a template function to compile. It works in other compilers; MSVC, Codewarrior, and Intel C++.

Below is a simplified example illustrating the situation. I have a static template member function in a template class, and I’m attempting to call it in a global template function.

Oddly, I get the compile error even though I’m not instantiating the global function.

Is this a problem with GCC or with me? Any advice for a workaround?

Thanks for any help.

Best regards,

Finley Lee

Alien Skin Software

/// Example begins here

#include <iostream>

template < typename T >

class template_class

{

public:

static T member_fn( T in ) { return T(4) ; }

template < typename R >

static R template_member_fn( T in ) { return (R) T(3.1) ; }

} ;

template < typename U, typename V >

void do_stuff( U first, V second )

{

// ok

std::cout << "template_class::member_fn( first ) == " << template_class::member_fn( first ) << std::endl ;

// not ok - error: expected primary-_expression_ before 'double'

std::cout << "template_class::template_member_fn<double>( first ) == " << template_class::template_member_fn<double>( first ) << std::endl ;

// not ok - error: expected primary-_expression_ before '>' token

std::cout << "template_class::template_member_fn<V>( second ) == " << template_class::template_member_fn<V>( first ) << std::endl ;

}

int main (int argc, char * const argv[])

{

// ok

std::cout << "member_fn( 3 ) == " << template_class<int>::member_fn( 3 ) << std::endl ;

// ok

std::cout << "template_class<int>::template_member_fn<double>( 2.1 ) == " << template_class<int>::template_member_fn<double>( 2.1 ) << std::endl ;

return 0;

}