// Copyright 2014 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. // Test that a custom deref with a fat pointer return type does not ICE #![allow(unknown_features)] #![feature(box_syntax)] use std::ops::Deref; pub struct Arr { ptr: Box<[uint]> } impl Deref for Arr { type Target = [uint]; fn deref(&self) -> &[uint] { &*self.ptr } } pub fn foo(arr: &Arr) { assert!(arr.len() == 3); let x: &[uint] = &**arr; assert!(x[0] == 1); assert!(x[1] == 2); assert!(x[2] == 3); } fn main() { let a = Arr { ptr: box [1, 2, 3] }; foo(&a); }