src/test/ui/extern/no-mangle-associated-fn.rs

   1 // aux-build: no-mangle-associated-fn.rs
   2 // run-pass
   3
   4 extern crate no_mangle_associated_fn;
   5
   6 struct Foo;
   7
   8 impl Foo {
   9     #[no_mangle]
  10     fn foo() -> u8 {
  11         1
  12     }
  13 }
  14
  15 trait Bar {
  16     fn qux() -> u8;
  17 }
  18
  19 impl Bar for Foo {
  20     #[no_mangle]
  21     fn qux() -> u8 {
  22         4
  23     }
  24 }
  25
  26 fn main() {
  27     extern "Rust" {
  28         fn foo() -> u8;
  29         fn bar() -> u8;
  30         fn baz() -> u8;
  31         fn qux() -> u8;
  32     }
  33     assert_eq!(unsafe { foo() }, 1);
  34     assert_eq!(unsafe { bar() }, 2);
  35     assert_eq!(unsafe { baz() }, 3);
  36     assert_eq!(unsafe { qux() }, 4);
  37 }