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// run-pass
// Tests that nested vtables work with overloaded calls.
// pretty-expanded FIXME #23616
#![feature(unboxed_closures, fn_traits)]
use std::marker::PhantomData;
use std::ops::Fn;
use std::ops::Add;
struct G<A>(PhantomData<A>);
impl<'a, A: Add<i32, Output=i32>> Fn<(A,)> for G<A> {
extern "rust-call" fn call(&self, (arg,): (A,)) -> i32 {
arg.add(1)
}
}
impl<'a, A: Add<i32, Output=i32>> FnMut<(A,)> for G<A> {
extern "rust-call" fn call_mut(&mut self, args: (A,)) -> i32 { self.call(args) }
}
impl<'a, A: Add<i32, Output=i32>> FnOnce<(A,)> for G<A> {
type Output = i32;
extern "rust-call" fn call_once(self, args: (A,)) -> i32 { self.call(args) }
}
fn main() {
// ICE trigger
(G(PhantomData))(1);
}
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