test/SemaCXX/elaborated-type-specifier.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 // Test the use of elaborated-type-specifiers to inject the names of
   4 // structs (or classes or unions) into an outer scope as described in
   5 // C++ [basic.scope.pdecl]p5.
   6 typedef struct S1 {
   7   union {
   8     struct S2 *x;
   9     struct S3 *y;
  10   };
  11 } S1;
  12
  13 bool test_elab(S1 *s1, struct S2 *s2, struct S3 *s3) {
  14   if (s1->x == s2) return true;
  15   if (s1->y == s3) return true;
  16   return false;
  17 }
  18
  19 namespace NS {
  20   class X {
  21   public:
  22     void test_elab2(struct S4 *s4);
  23   };
  24
  25   void X::test_elab2(S4 *s4) { } // expected-note{{passing argument to parameter 's4' here}}
  26 }
  27
  28 void test_X_elab(NS::X x) {
  29   struct S4 *s4 = 0;
  30   x.test_elab2(s4); // expected-error{{cannot initialize a parameter of type 'NS::S4 *' with an lvalue of type 'struct S4 *'}}
  31 }
  32
  33 namespace NS {
  34   S4 *get_S4();
  35 }
  36
  37 void test_S5_scope() {
  38   S4 *s4; // expected-error{{use of undeclared identifier 'S4'}} \
  39   // expected-error{{use of undeclared identifier 's4'}}
  40 }
  41
  42 int test_funcparam_scope(struct S5 * s5) {
  43   struct S5 { int y; } *s5_2 = 0;
  44   if (s5 == s5_2) return 1; // expected-error {{comparison of distinct pointer types ('struct S5 *' and 'struct S5 *')}}
  45   return 0;
  46 }
  47
  48