1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 template <class T> T* f(int); // #1 4 template <class T, class U> T& f(U); // #2 5 6 void g() { 7 int *ip = f<int>(1); // calls #1 8 } 9 10 template<typename T> 11 struct identity { 12 typedef T type; 13 }; 14 15 template <class T> 16 T* f2(int, typename identity<T>::type = 0); 17 template <class T, class U> 18 T& f2(U, typename identity<T>::type = 0); 19 20 void g2() { 21 int* ip = f2<int>(1); 22 } 23 24 template<class T, class U> struct A { }; 25 26 template<class T, class U> inline int *f3( U, A<U,T>* p = 0 ); // #1 expected-note{{candidate function [with T = int, U = int]}} 27 template< class U> inline float *f3( U, A<U,U>* p = 0 ); // #2 expected-note{{candidate function [with U = int]}} 28 29 void g3() { 30 float *fp = f3<int>( 42, (A<int,int>*)0 ); // Ok, picks #2. 31 f3<int>( 42 ); // expected-error{{call to 'f3' is ambiguous}} 32 33 } 34 35 namespace PR9006 { 36 struct X { 37 template <class Get> 38 int &f(char const* name, Get fget, char const* docstr = 0); 39 40 template <class Get, class Set> 41 float &f(char const* name, Get fget, Set fset, char const* docstr = 0); 42 }; 43 44 void test(X x) { 45 int &ir = x.f("blah", 0, "blah"); 46 } 47 } 48
