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1 // RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify -std=c++11 %s
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2
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3 static int test0 __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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4 static void test1() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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5
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6 namespace test2 __attribute__((weak)) { // expected-warning {{'weak' attribute only applies to variables, functions, and classes}}
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7 }
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8
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9 namespace {
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10 int test3 __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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11 void test4() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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12 }
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13
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14 struct Test5 {
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15 static void test5() __attribute__((weak)); // no error
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16 };
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17
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18 namespace {
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19 struct Test6 {
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20 static void test6() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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21 };
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22 }
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23
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24 // GCC rejects the instantiation with the internal type, but some existing
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25 // code expects it. It is also not that different from giving hidden visibility
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26 // to parts of a template that have explicit default visibility, so we accept
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27 // this.
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28 template <class T> struct Test7 {
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29 void test7() __attribute__((weak)) {}
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30 static int var __attribute__((weak));
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31 };
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32 template <class T>
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33 int Test7<T>::var;
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34 namespace { class Internal {}; }
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35 template struct Test7<Internal>;
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36 template struct Test7<int>;
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37
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38 class __attribute__((weak)) Test8 {}; // OK
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39
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40 __attribute__((weak)) auto Test9 = Internal(); // expected-error {{weak declaration cannot have internal linkage}}
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