clang/test/SemaTemplate/member-function-template.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 struct X {
   4   template<typename T> T& f0(T);
   5
   6   void g0(int i, double d) {
   7     int &ir = f0(i);
   8     double &dr = f0(d);
   9   }
  10
  11   template<typename T> T& f1(T);
  12   template<typename T, typename U> U& f1(T, U);
  13
  14   void g1(int i, double d) {
  15     int &ir1 = f1(i);
  16     int &ir2 = f1(d, i);
  17     int &ir3 = f1(i, i);
  18   }
  19 };
  20
  21 void test_X_f0(X x, int i, float f) {
  22   int &ir = x.f0(i);
  23   float &fr = x.f0(f);
  24 }
  25
  26 void test_X_f1(X x, int i, float f) {
  27   int &ir1 = x.f1(i);
  28   int &ir2 = x.f1(f, i);
  29   int &ir3 = x.f1(i, i);
  30 }
  31
  32 void test_X_f0_address() {
  33   int& (X::*pm1)(int) = &X::f0;
  34   float& (X::*pm2)(float) = &X::f0;
  35 }
  36
  37 void test_X_f1_address() {
  38   int& (X::*pm1)(int) = &X::f1;
  39   float& (X::*pm2)(float) = &X::f1;
  40   int& (X::*pm3)(float, int) = &X::f1;
  41 }
  42
  43 void test_X_f0_explicit(X x, int i, long l) {
  44   int &ir1 = x.f0<int>(i);
  45   int &ir2 = x.f0<>(i);
  46   long &il1 = x.f0<long>(i);
  47 }
  48
  49 // PR4608
  50 class A { template <class x> x a(x z) { return z+y; } int y; };
  51
  52 // PR5419
  53 struct Functor {
  54   template <typename T>
  55   bool operator()(const T& v) const {
  56     return true;
  57   }
  58 };
  59
  60 void test_Functor(Functor f) {
  61   f(1);
  62 }
  63
  64 // Instantiation on ->
  65 template<typename T>
  66 struct X1 {
  67   template<typename U> U& get();
  68 };
  69
  70 template<typename T> struct X2; // expected-note{{here}}
  71
  72 void test_incomplete_access(X1<int> *x1, X2<int> *x2) {
  73   float &fr = x1->get<float>();
  74   (void)x2->get<float>(); // expected-error{{implicit instantiation of undefined template}}
  75 }
  76
  77 // Instantiation of template template parameters in a member function
  78 // template.
  79 namespace TTP {
  80   template<int Dim> struct X {
  81     template<template<class> class M, class T> void f(const M<T>&);
  82   };
  83
  84   template<typename T> struct Y { };
  85
  86   void test_f(X<3> x, Y<int> y) { x.f(y); }
  87 }
  88
  89 namespace PR7387 {
  90   template <typename T> struct X {};
  91
  92   template <typename T1> struct S {
  93     template <template <typename> class TC> void foo(const TC<T1>& arg);
  94   };
  95
  96   template <typename T1> template <template <typename> class TC>
  97   void S<T1>::foo(const TC<T1>& arg) {}
  98
  99   void test(const X<int>& x) {
 100     S<int> s;
 101     s.foo(x);
 102   }
 103 }