src/test/ui/functions-closures/fn-abi.rs

   1 // run-pass
   2 // Ensure that declarations and types which use `extern fn` both have the same
   3 // ABI (#9309).
   4
   5 // pretty-expanded FIXME #23616
   6 // aux-build:fn-abi.rs
   7
   8 extern crate fn_abi;
   9
  10 extern "C" {
  11     fn foo();
  12 }
  13
  14 pub fn main() {
  15     // Will only type check if the type of _p and the decl of foo use the
  16     // same ABI
  17     let _p: unsafe extern "C" fn() = foo;
  18 }