forked from OSchip/llvm-project
41 lines
1.5 KiB
C++
41 lines
1.5 KiB
C++
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify -std=c++11 %s
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static int test0 __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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static void test1() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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namespace test2 __attribute__((weak)) { // expected-warning {{'weak' attribute only applies to variables, functions and classes}}
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}
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namespace {
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int test3 __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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void test4() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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}
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struct Test5 {
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static void test5() __attribute__((weak)); // no error
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};
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namespace {
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struct Test6 {
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static void test6() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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};
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}
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// GCC rejects the instantiation with the internal type, but some existing
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// code expects it. It is also not that different from giving hidden visibility
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// to parts of a template that have explicit default visibility, so we accept
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// this.
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template <class T> struct Test7 {
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void test7() __attribute__((weak)) {}
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static int var __attribute__((weak));
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};
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template <class T>
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int Test7<T>::var;
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namespace { class Internal {}; }
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template struct Test7<Internal>;
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template struct Test7<int>;
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class __attribute__((weak)) Test8 {}; // OK
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__attribute__((weak)) auto Test9 = Internal(); // expected-error {{weak declaration cannot have internal linkage}}
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