src/test/ui-fulldeps/uninit_mask.rs


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// run-pass
// ignore-cross-compile
// ignore-stage1

#![feature(rustc_private)]

extern crate rustc_middle;
extern crate rustc_target;

use rustc_middle::mir::interpret::InitMask;
use rustc_target::abi::Size;

fn main() {
    let mut mask = InitMask::new(Size::from_bytes(500), false);
    assert!(!mask.get(Size::from_bytes(499)));
    mask.set(Size::from_bytes(499), true);
    assert!(mask.get(Size::from_bytes(499)));
    mask.set_range_inbounds(Size::from_bytes(100), Size::from_bytes(256), true);
    for i in 0..100 {
        assert!(!mask.get(Size::from_bytes(i)));
    }
    for i in 100..256 {
        assert!(mask.get(Size::from_bytes(i)));
    }
    for i in 256..499 {
        assert!(!mask.get(Size::from_bytes(i)));
    }
}