src/test/ui/macros/macros-in-extern.rs

   1 // run-pass
   2 // ignore-wasm32
   3
   4 #![feature(decl_macro)]
   5
   6 macro_rules! returns_isize(
   7     ($ident:ident) => (
   8         fn $ident() -> isize;
   9     )
  10 );
  11
  12 macro takes_u32_returns_u32($ident:ident) {
  13     fn $ident(arg: u32) -> u32;
  14 }
  15
  16 macro_rules! emits_nothing(
  17     () => ()
  18 );
  19
  20 macro_rules! emits_multiple(
  21     () => {
  22         fn f1() -> u32;
  23         fn f2() -> u32;
  24     }
  25 );
  26
  27 mod defs {
  28     #[no_mangle]
  29     extern "C" fn f1() -> u32 {
  30         1
  31     }
  32     #[no_mangle]
  33     extern "C" fn f2() -> u32 {
  34         2
  35     }
  36 }
  37
  38 fn main() {
  39     assert_eq!(unsafe { rust_get_test_int() }, 1);
  40     assert_eq!(unsafe { rust_dbg_extern_identity_u32(0xDEADBEEF) }, 0xDEADBEEFu32);
  41     assert_eq!(unsafe { f1() }, 1);
  42     assert_eq!(unsafe { f2() }, 2);
  43 }
  44
  45 #[link(name = "rust_test_helpers", kind = "static")]
  46 extern "C" {
  47     returns_isize!(rust_get_test_int);
  48     takes_u32_returns_u32!(rust_dbg_extern_identity_u32);
  49     emits_nothing!();
  50     emits_multiple!();
  51 }