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