clang/test/SemaCXX/internal_linkage.cpp

   1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
   2
   3 int f() __attribute__((internal_linkage));
   4
   5 class A;
   6 class __attribute__((internal_linkage)) A {
   7 public:
   8   int x __attribute__((internal_linkage)); // expected-warning{{'internal_linkage' attribute only applies to variables, functions, and classes}}
   9   static int y __attribute__((internal_linkage));
  10   void f1() __attribute__((internal_linkage));
  11   void f2() __attribute__((internal_linkage)) {}
  12   static void f3() __attribute__((internal_linkage)) {}
  13   void f4(); // expected-note{{previous declaration is here}}
  14   static int zz; // expected-note{{previous declaration is here}}
  15   A() __attribute__((internal_linkage)) {}
  16   ~A() __attribute__((internal_linkage)) {}
  17   A& operator=(const A&) __attribute__((internal_linkage)) { return *this; }
  18   struct {
  19     int z  __attribute__((internal_linkage)); // expected-warning{{'internal_linkage' attribute only applies to}}
  20   };
  21 };
  22
  23 __attribute__((internal_linkage)) void A::f4() {} // expected-error{{'internal_linkage' attribute does not appear on the first declaration}}
  24
  25 __attribute__((internal_linkage)) int A::zz; // expected-error{{'internal_linkage' attribute does not appear on the first declaration}}
  26
  27 namespace Z __attribute__((internal_linkage)) { // expected-warning{{'internal_linkage' attribute only applies to}}
  28 }
  29
  30 __attribute__((internal_linkage("foo"))) int g() {} // expected-error{{'internal_linkage' attribute takes no arguments}}
  31
  32 [[clang::internal_linkage]] int h() {}
  33
  34 enum struct __attribute__((internal_linkage)) E { // expected-warning{{'internal_linkage' attribute only applies to}}
  35   a = 1,
  36   b = 2
  37 };
  38
  39 int A::y;
  40
  41 void A::f1() {
  42 }
  43
  44 void g(int a [[clang::internal_linkage]]) { // expected-warning{{'internal_linkage' attribute only applies to variables, functions and classes}}
  45   int x [[clang::internal_linkage]]; // expected-warning{{'internal_linkage' attribute on a non-static local variable is ignored}}
  46   static int y [[clang::internal_linkage]];
  47 }