1 // RUN: %clang_cc1 -verify -fsyntax-only %s
2 
3 extern int f0() __attribute__((weak));
4 extern int g0 __attribute__((weak));
5 extern int g1 __attribute__((weak_import));
6 int f2() __attribute__((weak));
7 int g2 __attribute__((weak));
8 int g3 __attribute__((weak_import)); // expected-warning {{'weak_import' attribute cannot be specified on a definition}}
9 int __attribute__((weak_import)) g4(void);
g5(void)10 void __attribute__((weak_import)) g5(void) {
11 }
12 
13 struct __attribute__((weak)) s0 {}; // expected-warning {{'weak' attribute only applies to variables, functions, and classes}}
14 struct __attribute__((weak_import)) s1 {}; // expected-warning {{'weak_import' attribute only applies to variables and functions}}
15 
16 static int f() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
17 static int x __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
18 
19 // rdar://9538608
20 int C; // expected-note {{previous definition is here}}
21 extern int C __attribute__((weak_import)); // expected-warning {{an already-declared variable is made a weak_import declaration}}
22 
23 static int pr14946_x;
24 extern int pr14946_x  __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
25 
26 static void pr14946_f();
27 void pr14946_f() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
28