| 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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| 41 | |
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