clang/test/SemaTemplate/instantiate-expr-3.cpp

   1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -verify %s
   2
   3 // ---------------------------------------------------------------------
   4 // Imaginary literals
   5 // ---------------------------------------------------------------------
   6 template<typename T>
   7 struct ImaginaryLiteral0 {
   8   void f(T &x) {
   9     x = 3.0I; // expected-error{{incompatible type}}
  10   }
  11 };
  12
  13 template struct ImaginaryLiteral0<_Complex float>;
  14 template struct ImaginaryLiteral0<int*>; // expected-note{{instantiation}}
  15
  16 // ---------------------------------------------------------------------
  17 // Compound assignment operator
  18 // ---------------------------------------------------------------------
  19 namespace N1 {
  20   struct X { };
  21
  22   int& operator+=(X&, int); // expected-note{{candidate}}
  23 }
  24
  25 namespace N2 {
  26   long& operator+=(N1::X&, long);
  27
  28   template<typename T, typename U, typename Result>
  29   struct PlusEquals0 {
  30     void f(T t, U u) {
  31       Result r = t += u; // expected-error{{ambiguous}}
  32     }
  33   };
  34 }
  35
  36 namespace N3 {
  37   struct Y : public N1::X {
  38     short& operator+=(long); // expected-note{{candidate}}
  39   };
  40 }
  41
  42 template struct N2::PlusEquals0<N1::X, int, int&>;
  43 template struct N2::PlusEquals0<N1::X, long, long&>;
  44 template struct N2::PlusEquals0<N3::Y, long, short&>;
  45 template struct N2::PlusEquals0<int, int, int&>;
  46 template struct N2::PlusEquals0<N3::Y, int, short&>; // expected-note{{instantiation}}
  47
  48 // ---------------------------------------------------------------------
  49 // Conditional operator
  50 // ---------------------------------------------------------------------
  51 template<typename T, typename U, typename Result>
  52 struct Conditional0 {
  53   void f(T t, U u) {
  54     Result result = t? : u;
  55   }
  56 };
  57
  58 template struct Conditional0<int, int, int>;
  59
  60 // ---------------------------------------------------------------------
  61 // Statement expressions
  62 // ---------------------------------------------------------------------
  63 template<typename T>
  64 struct StatementExpr0 {
  65   void f(T t) {
  66     (void)({
  67         if (t) // expected-error{{contextually convertible}}
  68           t = t + 17; // expected-error {{invalid operands to binary expression ('N1::X' and 'int')}}
  69         t + 12; // expected-error{{invalid operands}}
  70       });
  71   }
  72 };
  73
  74 template struct StatementExpr0<int>;
  75 template struct StatementExpr0<N1::X>; // expected-note{{instantiation}}
  76
  77 // ---------------------------------------------------------------------
  78 // __builtin_choose_expr
  79 // ---------------------------------------------------------------------
  80 template<bool Cond, typename T, typename U, typename Result>
  81 struct Choose0 {
  82   void f(T t, U u) {
  83     Result r = __builtin_choose_expr(Cond, t, u); // expected-error{{lvalue}}
  84   }
  85 };
  86
  87 template struct Choose0<true, int, float, int&>;
  88 template struct Choose0<false, int, float, float&>;
  89 template struct Choose0<true, int, float, float&>; // expected-note{{instantiation}}
  90
  91 // ---------------------------------------------------------------------
  92 // __builtin_va_arg
  93 // ---------------------------------------------------------------------
  94 template<typename ArgType>
  95 struct VaArg0 {
  96   void f(int n, ...) {
  97     __builtin_va_list va;
  98     __builtin_va_start(va, n);
  99     for (int i = 0; i != n; ++i)
 100       (void)__builtin_va_arg(va, ArgType);
 101     __builtin_va_end(va);
 102   }
 103 };
 104
 105 template struct VaArg0<int>;
 106
 107 template<typename VaList, typename ArgType>
 108 struct VaArg1 {
 109   void f(int n, ...) {
 110     VaList va;
 111     __builtin_va_start(va, n); // expected-error{{int}} expected-error{{char *}}
 112     for (int i = 0; i != n; ++i)
 113       (void)__builtin_va_arg(va, ArgType); // expected-error{{int}}
 114     __builtin_va_end(va); // expected-error{{int}} expected-error{{char *}}
 115   }
 116 };
 117
 118 template struct VaArg1<__builtin_va_list, int>;
 119 template struct VaArg1<__builtin_ms_va_list, int>; // expected-note{{instantiation}}
 120 template struct VaArg1<int, int>; // expected-note{{instantiation}}
 121
 122 template<typename ArgType>
 123 struct VaArg2 {
 124   void __attribute__((ms_abi)) f(int n, ...) {
 125     __builtin_ms_va_list va;
 126     __builtin_ms_va_start(va, n);
 127     for (int i = 0; i != n; ++i)
 128       (void)__builtin_va_arg(va, ArgType);
 129     __builtin_ms_va_end(va);
 130   }
 131 };
 132
 133 template struct VaArg2<int>;
 134
 135 template<typename VaList, typename ArgType>
 136 struct VaArg3 {
 137   void __attribute__((ms_abi)) f(int n, ...) {
 138     VaList va;
 139     __builtin_ms_va_start(va, n); // expected-error{{int}} expected-error{{__va_list_tag}}
 140     for (int i = 0; i != n; ++i)
 141       (void)__builtin_va_arg(va, ArgType); // expected-error{{int}}
 142     __builtin_ms_va_end(va); // expected-error{{int}} expected-error{{__va_list_tag}}
 143   }
 144 };
 145
 146 template struct VaArg3<__builtin_ms_va_list, int>;
 147 template struct VaArg3<__builtin_va_list, int>; // expected-note{{instantiation}}
 148 template struct VaArg3<int, int>; // expected-note{{instantiation}}