attr-weak.c revision 2a5bb509e2d33a0f7aa4bb0ba53c73b5dfdd6bb4 
1// RUN: %clang_cc1 -verify -fsyntax-only %s
2
3extern int g0 __attribute__((weak));
4extern int g1 __attribute__((weak_import));
5int g2 __attribute__((weak));
6int g3 __attribute__((weak_import)); // expected-warning {{'weak_import' attribute cannot be specified on a definition}}
7int __attribute__((weak_import)) g4(void);
8void __attribute__((weak_import)) g5(void) {
9}
10
11struct __attribute__((weak)) s0 {}; // expected-warning {{'weak' attribute only applies to variables and functions}}
12struct __attribute__((weak_import)) s1 {}; // expected-warning {{'weak_import' attribute only applies to variables and functions}}
13
14static int x __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
15
16// rdar://9538608
17int C; // expected-note {{previous definition is here}}
18extern int C __attribute__((weak_import)); // expected-warning {{an already-declared variable is made a weak_import declaration}}
19
20static int pr14946_x;
21extern int pr14946_x  __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
22
23static void pr14946_f();
24void pr14946_f() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
25