[rustc.git] / src / test / run-pass / out-pointer-aliasing.rs

// 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 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

// pretty-expanded FIXME #23616

#[derive(Copy, Clone)]
pub struct Foo {
    f1: isize,
    _f2: isize,
}

#[inline(never)]
pub fn foo(f: &mut Foo) -> Foo {
    let ret = *f;
    f.f1 = 0;
    ret
}

pub fn main() {
    let mut f = Foo {
        f1: 8,
        _f2: 9,
    };
    f = foo(&mut f);
    assert_eq!(f.f1, 8);
}
Commit	Line	Data
1a4d82fc	1	// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
223e47cc LB	2	// file at the top-level directory of this distribution and at
	3	// http://rust-lang.org/COPYRIGHT.
	4	//
	5	// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
	6	// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
	7	// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
	8	// option. This file may not be copied, modified, or distributed
	9	// except according to those terms.
	10
c34b1796 AL	11	// pretty-expanded FIXME #23616
	12
	13	#[derive(Copy, Clone)]
1a4d82fc	14	pub struct Foo {
c34b1796 AL	15	f1: isize,
c34b1796 AL	16	_f2: isize,
223e47cc LB	17	}
223e47cc LB	18
1a4d82fc JJ	19	#[inline(never)]
	20	pub fn foo(f: &mut Foo) -> Foo {
	21	let ret = *f;
	22	f.f1 = 0;
	23	ret
223e47cc LB	24	}
	25
	26	pub fn main() {
1a4d82fc JJ	27	let mut f = Foo {
	28	f1: 8,
	29	_f2: 9,
223e47cc	30	};
1a4d82fc JJ	31	f = foo(&mut f);
1a4d82fc JJ	32	assert_eq!(f.f1, 8);
223e47cc	33	}