1 // RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify %s
2 
3 // GCC will accept anything as the argument of weakref. Should we
4 // check for an existing decl?
5 static int a1() __attribute__((weakref ("foo")));
6 static int a2() __attribute__((weakref, alias ("foo")));
7 
8 static int a3 __attribute__((weakref ("foo")));
9 static int a4 __attribute__((weakref, alias ("foo")));
10 
11 // gcc rejects, clang accepts
12 static int a5 __attribute__((alias ("foo"), weakref));
13 
14 // this is pointless, but accepted by gcc. We reject it.
15 static int a6 __attribute__((weakref)); //expected-error {{weakref declaration of 'a6' must also have an alias attribute}}
16 
17 // gcc warns, clang rejects
18 void f(void) {
19   static int a __attribute__((weakref ("v2"))); // expected-error {{declaration of 'a' must be in a global context}}
20 }
21 
22 // both gcc and clang reject
23 class c {
24   static int a __attribute__((weakref ("v2"))); // expected-error {{declaration of 'a' must be in a global context}}
25   static int b() __attribute__((weakref ("f3"))); // expected-error {{declaration of 'b' must be in a global context}}
26 };
27 int a7() __attribute__((weakref ("f1"))); // expected-error {{weakref declaration must have internal linkage}}
28 int a8 __attribute__((weakref ("v1"))); // expected-error {{weakref declaration must have internal linkage}}
29 
30 // gcc accepts this
31 int a9 __attribute__((weakref));  // expected-error {{weakref declaration of 'a9' must also have an alias attribute}}
32 
33 static int a10();
34 int a10() __attribute__((weakref ("foo")));
35 
36 static int v __attribute__((weakref(a1), alias("foo"))); // expected-error {{'weakref' attribute requires a string}}
37