1 // RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify -std=c++11 %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, functions and classes}} 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 38 class __attribute__((weak)) Test8 {}; // OK 39 40 __attribute__((weak)) auto Test9 = Internal(); // expected-error {{weak declaration cannot have internal linkage}} 41
