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// PR c++/54323
// { dg-do compile { target c++11 } }
template<bool, typename T = void>
struct enable_if { };
template<typename T>
struct enable_if<true, T>
{ typedef T type; };
template<template<typename> class CRTP, typename T>
class Base
{
public:
template<template<typename> class CRTP0, typename T0, class>
friend int func(const Base<CRTP0, T0>& rhs);
protected:
int n;
};
template<template<typename> class CRTP0, typename T0,
class = typename enable_if<true>::type>
int func(const Base<CRTP0, T0>& rhs)
{
return rhs.n;
}
template<typename T>
class Derived : public Base<Derived, T> {};
int main()
{
Derived<int> x;
func(x);
return 0;
}
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