clang/test/SemaCXX/invalid-decl-hiding.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 // Member Test1 hides class Test1
   4 class Test1 {
   5   static int Test1; // expected-error {{member 'Test1' has the same name as its class}}
   6                     // expected-note@-1 {{class 'Test1' is hidden by a non-type declaration of 'Test1' here}}
   7   void fn1() {
   8     Test1 x; // expected-error {{must use 'class' tag to refer to type 'Test1' in this scope}}
   9   }
  10   int fn2() {
  11     return Test1;
  12   }
  13 };
  14
  15 // Member Test2 doesn't hide class Test2 as its declaration is invalid
  16 class Test2 { // expected-note {{declared here}}
  17   static NoSuchType Test2; // expected-error {{unknown type name 'NoSuchType'}}
  18                            // expected-error@-1 {{member 'Test2' has the same name as its class}}
  19   void fn1() {
  20     Test2 x;
  21   }
  22   int fn2() {
  23     return Test2; // expected-error {{'Test2' does not refer to a value}}
  24   }
  25 };
  26
  27 // Test3a::x doesn't hide Test3b::x as its declaration is invalid
  28 namespace Test3a {
  29   NoSuchType x() { return 0; } // expected-error {{unknown type name 'NoSuchType'}}
  30 }
  31 namespace Test3b {
  32   class x; // expected-note {{declared here}}
  33 }
  34 using Test3a::x;
  35 using Test3b::x;
  36 int test3_fn() {
  37   return x; // expected-error {{'x' does not refer to a value}}
  38 }
  39
  40 // Function Test4 hides class Test4, whose declaration is invalid
  41 class Test4 : public NoSuchType { // expected-error {{expected class name}}
  42
  43 };
  44 int Test4() { return 0; }
  45
  46 int test4_fn() {
  47   return Test4();
  48 }
  49
  50 // Function Test5 doesn't hide class Test5 when both are invalid
  51 class Test5 : public NoSuchType { // expected-error {{expected class name}}
  52
  53 };
  54 NoSuchType Test5() { return 0; } // expected-error {{unknown type name 'NoSuchType'}}
  55
  56 Test5 test5_fn() {
  57   Test5 x;
  58   return x;
  59 }