Type of template member functions.

From:
=?ISO-8859-1?Q?Elias_Salom=E3o_Helou_Neto?= <eshneto@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Mon, 8 Nov 2010 09:00:01 -0800 (PST)
Message-ID:
<dd05d80f-7543-4446-ae6a-da7e9b45fd26@n24g2000prj.googlegroups.com>
Hello, the following program when compiled with GCC gives the output
that follows the listing:

#include <iostream>
#include <typeinfo>

struct A {
  template< unsigned n >
  void member( const double& );
};

int main()
{
  std::cout << typeid( void (A::*) ( const double& ) ).name() << '\n';
  std::cout << typeid( &A::member< 0 > ).name() << '\n';
  std::cout << typeid( &A::member< 1 > ).name() << '\n';

  return( 0 );
}

Output:

M1AFvRKdE
PFvRKdE
PFvRKdE

Is that a GCC bug or the types of template member function and member
functions are not the same?

The reason I ask is because the following test always returns false:

template< class T >
class has_apply {

  typedef char yes[1];
  typedef char no[2];

  template< class U, U u >
  struct coerce {};

  template< class U, unsigned n >
  static yes& test( U*, coerce< void (U::*) ( const double& ) ,
&U::template apply< n > >* = 0 );

  template< class U, unsigned n >
  static no& test( ... );

public:

  static const bool result = ( sizeof( yes ) == sizeof( test< T, 0

( (T*)(0) ) ) );

};

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