[rustc.git] / src / test / ui / packed / packed-struct-address-of-element.rs

// run-pass
#![allow(dead_code)]
#![feature(raw_ref_op)]
// ignore-emscripten weird assertion?

#[repr(packed)]
struct Foo1 {
    bar: u8,
    baz: usize
}

#[repr(packed(2))]
struct Foo2 {
    bar: u8,
    baz: usize
}

#[repr(C, packed(4))]
struct Foo4C {
    bar: u8,
    baz: usize
}

pub fn main() {
    let foo = Foo1 { bar: 1, baz: 2 };
    let brw = &raw const foo.baz;
    unsafe { assert_eq!(brw.read_unaligned(), 2); }

    let foo = Foo2 { bar: 1, baz: 2 };
    let brw = &raw const foo.baz;
    unsafe { assert_eq!(brw.read_unaligned(), 2); }

    let mut foo = Foo4C { bar: 1, baz: 2 };
    let brw = &raw mut foo.baz;
    unsafe { assert_eq!(brw.read_unaligned(), 2); }
}
Commit	Line	Data
dfeec247 XL	1	// run-pass
dfeec247 XL	2	#![allow(dead_code)]
dfeec247 XL	3	#![feature(raw_ref_op)]
	4	// ignore-emscripten weird assertion?
	5
	6	#[repr(packed)]
	7	struct Foo1 {
	8	bar: u8,
	9	baz: usize
	10	}
	11
	12	#[repr(packed(2))]
	13	struct Foo2 {
	14	bar: u8,
	15	baz: usize
	16	}
	17
	18	#[repr(C, packed(4))]
	19	struct Foo4C {
	20	bar: u8,
	21	baz: usize
	22	}
	23
	24	pub fn main() {
	25	let foo = Foo1 { bar: 1, baz: 2 };
	26	let brw = &raw const foo.baz;
	27	unsafe { assert_eq!(brw.read_unaligned(), 2); }
	28
	29	let foo = Foo2 { bar: 1, baz: 2 };
	30	let brw = &raw const foo.baz;
	31	unsafe { assert_eq!(brw.read_unaligned(), 2); }
	32
	33	let mut foo = Foo4C { bar: 1, baz: 2 };
	34	let brw = &raw mut foo.baz;
	35	unsafe { assert_eq!(brw.read_unaligned(), 2); }
	36	}