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// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
// A default template-argument may be specified for any kind of
// template-parameter that is not a template parameter pack.
template<typename ...Types = int> // expected-error{{template parameter pack cannot have a default argument}}
struct X0;
template<int ...Values = 0> // expected-error{{template parameter pack cannot have a default argument}}
struct X1;
template<typename T> struct vector;
template<template<class> class ...Templates = vector> // expected-error{{template parameter pack cannot have a default argument}}
struct X2;
struct X3 {
template<typename T = int> // expected-error{{default template argument not permitted on a friend template}}
friend void f0(X3);
template<typename T = int>
friend void f1(X3) {
}
};
namespace PR8748 {
// Testcase 1
struct A0 { template<typename U> struct B; };
template<typename U = int> struct A0::B { };
// Testcase 2
template<typename T> struct A1 { template<typename U> struct B; };
template<typename T> template<typename U = int> struct A1<T>::B { }; // expected-error{{cannot add a default template argument to the definition of a member of a class template}}
// Testcase 3
template<typename T>
struct X2 {
void f0();
template<typename U> void f1();
};
template<typename T = int> void X2<T>::f0() { } // expected-error{{cannot add a default template argument to the definition of a member of a class template}}
template<typename T> template<typename U = int> void X2<T>::f1() { } // expected-error{{cannot add a default template argument to the definition of a member of a class template}}
namespace Inner {
template<typename T> struct X3;
template<typename T> void f2();
}
// Okay; not class members.
template<typename T = int> struct Inner::X3 { };
template<typename T = int> void Inner::f2() {}
}
namespace PR10069 {
template<typename T, T a, T b=0, T c=1>
T f(T x);
void g() {
f<unsigned int, 0>(0);
}
}
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