INSTANTIATE_DEFAULT_ARGS.cpp

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// checking if default args are instantiated
 
 
#include "config.h"
 
 
template <class T>
struct A
{
    // must be able to use inaccessible members
    void foo (const T& = T ()) { }
 
    // must be able to use non-existent members
    void bar (const T& = T::foobar ());
};
 
template <class T>
void A<T>::bar (const T& /* = T::foobar () */) { }
 
struct B
{
    // no foobar() declared
private:
    B () { }
};
 
#ifndef _RWSTD_NO_EXPLICIT_INSTANTIATION
// 14.7.2, p9 - an explicit instantiation does not constitute
//              a use of a default argument
template class A<B>;
 
#else   // if defined (_RWSTD_NO_EXPLICIT_INSTANTIATION)
 
void foo ()
{
    &A<int>::foo;
}
 
#endif   // _RWSTD_NO_EXPLICIT_INSTANTIATION