src/test/ui/issues/issue-51907.rs

   1 // run-pass
   2 trait Foo {
   3     extern "C" fn borrow(&self);
   4     extern "C" fn take(self: Box<Self>);
   5 }
   6
   7 struct Bar;
   8 impl Foo for Bar {
   9     #[allow(improper_ctypes_definitions)]
  10     extern "C" fn borrow(&self) {}
  11     #[allow(improper_ctypes_definitions)]
  12     extern "C" fn take(self: Box<Self>) {}
  13 }
  14
  15 fn main() {
  16     let foo: Box<dyn Foo> = Box::new(Bar);
  17     foo.borrow();
  18     foo.take()
  19 }