clang/test/SemaTemplate/temp_func_order.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 template<typename T>
   3 int &f0(T);
   4
   5 template<typename T>
   6 float &f0(T*);
   7
   8 void test_f0(int i, int *ip) {
   9   int &ir = f0(i);
  10   float &fr = f0(ip);
  11 }
  12
  13 template<typename T, typename U>
  14 int &f1(T, U);
  15
  16 template<typename T>
  17 float &f1(T, T);
  18
  19 void test_f1(int i, float f) {
  20   int &ir = f1(i, f);
  21   float &fr1 = f1(i, i);
  22   float &fr2 = f1(f, f);
  23 }
  24
  25 template<typename T, typename U>
  26 struct A { };
  27
  28 template<typename T>
  29 int &f2(T);
  30
  31 template<typename T, typename U>
  32 float &f2(A<T, U>);
  33
  34 template<typename T>
  35 double &f2(A<T, T>);
  36
  37 void test_f2(int i, A<int, float> aif, A<int, int> aii) {
  38   int &ir = f2(i);
  39   float &fr = f2(aif);
  40   double &dr = f2(aii);
  41 }
  42
  43 template<typename T, typename U>
  44 int &f3(T*, U); // expected-note{{candidate}}
  45
  46 template<typename T, typename U>
  47 float &f3(T, U*); // expected-note{{candidate}}
  48
  49 void test_f3(int i, int *ip, float *fp) {
  50   int &ir = f3(ip, i);
  51   float &fr = f3(i, fp);
  52   f3(ip, ip); // expected-error{{ambiguous}}
  53 }
  54
  55 template<typename T>
  56 int &f4(T&);
  57
  58 template<typename T>
  59 float &f4(const T&);
  60
  61 void test_f4(int i, const int ic) {
  62   int &ir1 = f4(i);
  63   float &fr1 = f4(ic);
  64 }
  65
  66 template<typename T, typename U>
  67 int &f5(T&, const U&); // expected-note{{candidate}}
  68
  69 template<typename T, typename U>
  70 float &f5(const T&, U&); // expected-note{{candidate}}
  71
  72 void test_f5(int i, const int ic) {
  73   f5(i, i); // expected-error{{ambiguous}}
  74 }
  75
  76 template<typename T, typename U>
  77 int &f6(T&, U&);
  78
  79 template<typename T, typename U>
  80 float &f6(const T&, U&);
  81
  82 void test_f6(int i, const int ic) {
  83   int &ir = f6(i, i);
  84   float &fr = f6(ic, ic);
  85 }
  86
  87 struct CrazyFun {
  88   template<typename T, typename U> operator A<T, U>();
  89   template<typename T> operator A<T, T>();
  90 };
  91
  92 void fun(CrazyFun cf) {
  93   A<int, float> aif = cf;
  94   A<int, int> aii = cf;
  95 }