FRIEND_TEMPLATE.cpp

Go to the documentation of this file.

// checking for friend templates of templates
 
 
#include "config.h"
 
 
template <class T>
struct A { enum { i }; };
 
template <class T>
struct B
{
private:
 
    template <class U, class V>
    friend int foo (A<U>, B<V>);
 
    int bar (int i) const { return i; }
};
 
template <class T, class U>
int foo (A<T> a, B<U> b)
{
    return b.bar (a.i);
}
 
#ifndef _RWSTD_NO_EXPLICIT_FUNC_INSTANTIATION
 
// explicitly instantiate to detect bugs such as SunPro 5.3's PR #30227
template int foo (A<int>, B<double>);
 
#endif   // _RWSTD_NO_EXPLICIT_FUNC_INSTANTIATION
 
int baz ()
{
    A<int> a;
    B<double> b;
 
    return foo (a, b);
}