Home | History | Annotate | Download | only in SemaCXX
      1 // RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify %s
      2 
      3 static int test0 __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
      4 static void test1() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
      5 
      6 namespace test2 __attribute__((weak)) { // expected-warning {{'weak' attribute only applies to variables and functions}}
      7 }
      8 
      9 namespace {
     10   int test3 __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
     11   void test4() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
     12 }
     13 
     14 struct Test5 {
     15   static void test5() __attribute__((weak)); // no error
     16 };
     17 
     18 namespace {
     19   struct Test6 {
     20     static void test6() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
     21   };
     22 }
     23 
     24 // GCC rejects the instantiation with the internal type, but some existing
     25 // code expects it. It is also not that different from giving hidden visibility
     26 // to parts of a template that have explicit default visibility, so we accept
     27 // this.
     28 template <class T> struct Test7 {
     29   void test7() __attribute__((weak)) {}
     30   static int var __attribute__((weak));
     31 };
     32 template <class T>
     33 int Test7<T>::var;
     34 namespace { class Internal; }
     35 template struct Test7<Internal>;
     36 template struct Test7<int>;
     37