test/SemaCXX/qualified-id-lookup.cpp

   1 // RUN: clang-cc -fsyntax-only -verify %s
   2 namespace Ns {
   3   int f(); // expected-note{{previous declaration is here}}
   4
   5   enum E {
   6     Enumerator
   7   };
   8 }
   9 namespace Ns {
  10   double f(); // expected-error{{functions that differ only in their return type cannot be overloaded}}
  11
  12   int x = Enumerator;
  13 }
  14
  15 namespace Ns2 {
  16   float f();
  17 }
  18
  19 int y = Ns::Enumerator;
  20
  21 namespace Ns2 {
  22   float f(int); // expected-note{{previous declaration is here}}
  23 }
  24
  25 namespace Ns2 {
  26   double f(int); // expected-error{{functions that differ only in their return type cannot be overloaded}}
  27 }
  28
  29 namespace N {
  30   int& f1();
  31 }
  32
  33 namespace N {
  34   struct f1 {
  35     static int member;
  36
  37     typedef int type;
  38
  39     void foo(type);
  40   };
  41
  42   void test_f1() {
  43     int &i1 = f1();
  44   }
  45 }
  46
  47 void N::f1::foo(int i) {
  48   f1::member = i;
  49   f1::type &ir = i;
  50 }
  51
  52 namespace N {
  53   float& f1(int x) {
  54     N::f1::type& i1 = x;
  55     f1::type& i2 = x;
  56   }
  57
  58   struct f2 {
  59     static int member;
  60   };
  61   void f2();
  62 }
  63
  64 int i1 = N::f1::member;
  65 typedef struct N::f1 type1;
  66 int i2 = N::f2::member;
  67 typedef struct N::f2 type2;
  68
  69 void test_f1(int i) {
  70   int &v1 = N::f1();
  71   float &v2 = N::f1(i);
  72   int v3 = ::i1;
  73   int v4 = N::f1::member;
  74 }
  75
  76 typedef int f2_type;
  77 namespace a {
  78   typedef int f2_type(int, int);
  79
  80   void test_f2() {
  81     ::f2_type(1, 2); // expected-error {{function-style cast to a builtin type can only take one argument}}
  82   }
  83 }
  84
  85 // PR clang/3291
  86 namespace a {
  87   namespace a {   // A1
  88     namespace a { // A2
  89       int i;
  90     }
  91   }
  92 }
  93
  94 void test_a() {
  95   a::a::i = 3; // expected-error{{no member named 'i'}}
  96   a::a::a::i = 4;
  97 }
  98
  99 struct Undef { // expected-note{{definition of 'struct Undef' is not complete until the closing '}'}}
 100   typedef int type;
 101
 102   Undef::type member;
 103
 104   static int size = sizeof(Undef); // expected-error{{invalid application of 'sizeof' to an incomplete type 'struct Undef'}}
 105
 106   int f();
 107 };
 108
 109 int Undef::f() {
 110   return sizeof(Undef);
 111 }