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      1 // RUN: %clang_cc1 -fsyntax-only -std=c++98 -verify %s
      2 namespace A {
      3   struct C {
      4     static int cx;
      5 
      6     static int cx2;
      7 
      8     static int Ag1();
      9     static int Ag2();
     10   };
     11   int ax;
     12   void Af();
     13 }
     14 
     15 A:: ; // expected-error {{expected unqualified-id}}
     16 // FIXME: there is a member 'ax'; it's just not a class.
     17 ::A::ax::undef ex3; // expected-error {{no member named 'ax'}}
     18 A::undef1::undef2 ex4; // expected-error {{no member named 'undef1'}}
     19 
     20 int A::C::Ag1() { return 0; }
     21 
     22 static int A::C::Ag2() { return 0; } // expected-error{{'static' can}}
     23 
     24 int A::C::cx = 17;
     25 
     26 
     27 static int A::C::cx2 = 17; // expected-error{{'static' can}}
     28 
     29 class C2 {
     30   void m(); // expected-note{{member declaration does not match because it is not const qualified}}
     31 
     32   void f(const int& parm); // expected-note{{type of 1st parameter of member declaration does not match definition ('const int &' vs 'int')}}
     33   void f(int) const; // expected-note{{member declaration does not match because it is const qualified}}
     34   void f(float);
     35 
     36   int x;
     37 };
     38 
     39 void C2::m() const { } // expected-error{{out-of-line definition of 'm' does not match any declaration in 'C2'}}
     40 
     41 void C2::f(int) { } // expected-error{{out-of-line definition of 'f' does not match any declaration in 'C2'}}
     42 
     43 void C2::m() {
     44   x = 0;
     45 }
     46 
     47 namespace B {
     48   void ::A::Af() {} // expected-error {{cannot define or redeclare 'Af' here because namespace 'B' does not enclose namespace 'A'}}
     49 }
     50 
     51 void f1() {
     52   void A::Af(); // expected-error {{definition or redeclaration of 'Af' not allowed inside a function}}
     53 }
     54 
     55 void f2() {
     56   A:: ; // expected-error {{expected unqualified-id}}
     57   A::C::undef = 0; // expected-error {{no member named 'undef'}}
     58   ::A::C::cx = 0;
     59   int x = ::A::ax = A::C::cx;
     60   x = sizeof(A::C);
     61   x = sizeof(::A::C::cx);
     62 }
     63 
     64 A::C c1;
     65 struct A::C c2;
     66 struct S : public A::C {};
     67 struct A::undef; // expected-error {{no struct named 'undef' in namespace 'A'}}
     68 
     69 namespace A2 {
     70   typedef int INT;
     71   struct RC;
     72   struct CC {
     73     struct NC;
     74   };
     75 }
     76 
     77 struct A2::RC {
     78   INT x;
     79 };
     80 
     81 struct A2::CC::NC {
     82   void m() {}
     83 };
     84 
     85 void f3() {
     86   N::x = 0; // expected-error {{use of undeclared identifier 'N'}}
     87   int N;
     88   N::x = 0; // expected-error {{expected a class or namespace}}
     89   { int A;           A::ax = 0; }
     90   { typedef int A;   A::ax = 0; } // expected-error{{expected a class or namespace}}
     91   { typedef A::C A;  A::ax = 0; } // expected-error {{no member named 'ax'}}
     92   { typedef A::C A;  A::cx = 0; }
     93 }
     94 
     95 // make sure the following doesn't hit any asserts
     96 void f4(undef::C); // expected-error {{use of undeclared identifier 'undef'}}
     97 
     98 typedef void C2::f5(int); // expected-error{{typedef declarator cannot be qualified}}
     99 
    100 void f6(int A2::RC::x); // expected-error{{parameter declarator cannot be qualified}}
    101 
    102 int A2::RC::x; // expected-error{{non-static data member defined out-of-line}}
    103 
    104 void A2::CC::NC::m(); // expected-error{{out-of-line declaration of a member must be a definition}}
    105 
    106 
    107 namespace E {
    108   int X = 5;
    109 
    110   namespace Nested {
    111     enum E {
    112       X = 0
    113     };
    114 
    115     void f() {
    116       return E::X; // expected-error{{expected a class or namespace}}
    117     }
    118   }
    119 }
    120 
    121 
    122 class Operators {
    123   Operators operator+(const Operators&) const; // expected-note{{member declaration does not match because it is const qualified}}
    124   operator bool();
    125 };
    126 
    127 Operators Operators::operator+(const Operators&) { // expected-error{{out-of-line definition of 'operator+' does not match any declaration in 'Operators'}}
    128   Operators ops;
    129   return ops;
    130 }
    131 
    132 Operators Operators::operator+(const Operators&) const {
    133   Operators ops;
    134   return ops;
    135 }
    136 
    137 Operators::operator bool() {
    138   return true;
    139 }
    140 
    141 namespace A {
    142   void g(int&); // expected-note{{type of 1st parameter of member declaration does not match definition ('int &' vs 'const int &')}}
    143 }
    144 
    145 void A::f() {} // expected-error-re{{out-of-line definition of 'f' does not match any declaration in namespace 'A'$}}
    146 
    147 void A::g(const int&) { } // expected-error{{out-of-line definition of 'g' does not match any declaration in namespace 'A'}}
    148 
    149 struct Struct { };
    150 
    151 void Struct::f() { } // expected-error{{out-of-line definition of 'f' does not match any declaration in 'Struct'}}
    152 
    153 void global_func(int);
    154 void global_func2(int);
    155 
    156 namespace N {
    157   void ::global_func(int) { } // expected-error{{definition or redeclaration of 'global_func' cannot name the global scope}}
    158 
    159   void f();
    160   // FIXME: if we move this to a separate definition of N, things break!
    161 }
    162 void ::global_func2(int) { } // expected-error{{extra qualification on member 'global_func2'}}
    163 
    164 void N::f() { } // okay
    165 
    166 struct Y;  // expected-note{{forward declaration of 'Y'}}
    167 Y::foo y; // expected-error{{incomplete type 'Y' named in nested name specifier}}
    168 
    169 X::X() : a(5) { } // expected-error{{use of undeclared identifier 'X'}} \
    170       // expected-error{{C++ requires a type specifier for all declarations}} \
    171       // expected-error{{only constructors take base initializers}}
    172 
    173 struct foo_S {
    174   static bool value;
    175 };
    176 bool (foo_S::value);
    177 
    178 
    179 namespace somens {
    180   struct a { }; // expected-note{{candidate constructor (the implicit copy constructor)}}
    181 }
    182 
    183 template <typename T>
    184 class foo {
    185 };
    186 
    187 
    188 // PR4452 / PR4451
    189 foo<somens:a> a2;  // expected-error {{unexpected ':' in nested name specifier}}
    190 
    191 somens::a a3 = a2; // expected-error {{no viable conversion}}
    192 
    193 // typedefs and using declarations.
    194 namespace test1 {
    195   namespace ns {
    196     class Counter { public: static int count; };
    197     typedef Counter counter;
    198   }
    199   using ns::counter;
    200 
    201   class Test {
    202     void test1() {
    203       counter c;
    204       c.count++;
    205       counter::count++;
    206     }
    207   };
    208 }
    209 
    210 // We still need to do lookup in the lexical scope, even if we push a
    211 // non-lexical scope.
    212 namespace test2 {
    213   namespace ns {
    214     extern int *count_ptr;
    215   }
    216   namespace {
    217     int count = 0;
    218   }
    219 
    220   int *ns::count_ptr = &count;
    221 }
    222 
    223 // PR6259, invalid case
    224 namespace test3 {
    225   class A; // expected-note {{forward declaration}}
    226   void foo(const char *path) {
    227     A::execute(path); // expected-error {{incomplete type 'test3::A' named in nested name specifier}}
    228   }
    229 }
    230 
    231 namespace PR7133 {
    232   namespace A {
    233     class Foo;
    234   }
    235 
    236   namespace A {
    237     namespace B {
    238       bool foo(Foo &);
    239     }
    240   }
    241 
    242   bool A::B::foo(Foo &) {
    243     return false;
    244   }
    245 }
    246 
    247 class CLASS {
    248   void CLASS::foo2(); // expected-error {{extra qualification on member 'foo2'}}
    249 };
    250 
    251 namespace PR8159 {
    252   class B { };
    253 
    254   class A {
    255     int A::a; // expected-error{{extra qualification on member 'a'}}
    256     static int A::b; // expected-error{{extra qualification on member 'b'}}
    257     int ::c; // expected-error{{non-friend class member 'c' cannot have a qualified name}}
    258   };
    259 }
    260 
    261 namespace rdar7980179 {
    262   class A { void f0(); }; // expected-note {{previous}}
    263   int A::f0() {} // expected-error {{out-of-line definition of 'rdar7980179::A::f0' differs from the declaration in the return type}}
    264 }
    265 
    266 namespace alias = A;
    267 double *dp = (alias::C*)0; // expected-error{{cannot initialize a variable of type 'double *' with an rvalue of type 'alias::C *'}}
    268 
    269 // http://llvm.org/PR10109
    270 namespace PR10109 {
    271 template<typename T>
    272 struct A {
    273 protected:
    274   struct B;
    275   struct B::C; // expected-error {{requires a template parameter list}} \
    276                // expected-error {{no struct named 'C'}} \
    277     // expected-error{{non-friend class member 'C' cannot have a qualified name}}
    278 };
    279 
    280 template<typename T>
    281 struct A2 {
    282 protected:
    283   struct B;
    284 };
    285 template <typename T>
    286 struct A2<T>::B::C; // expected-error {{no struct named 'C'}}
    287 }
    288 
    289 namespace PR13033 {
    290 namespace NS {
    291  int a; // expected-note {{'NS::a' declared here}}
    292  int longer_b; //expected-note {{'NS::longer_b' declared here}}
    293 }
    294 
    295 // Suggest adding a namespace qualifier to both variable names even though one
    296 // is only a single character long.
    297 int foobar = a + longer_b; // expected-error {{use of undeclared identifier 'a'; did you mean 'NS::a'?}} \
    298                            // expected-error {{use of undeclared identifier 'longer_b'; did you mean 'NS::longer_b'?}}
    299 }
    300