src/test/ui-fulldeps/uninit_mask.rs

   1 // run-pass
   2 // ignore-cross-compile
   3 // ignore-stage1
   4
   5 #![feature(rustc_private)]
   6
   7 extern crate rustc_middle;
   8 extern crate rustc_target;
   9
  10 use rustc_middle::mir::interpret::InitMask;
  11 use rustc_target::abi::Size;
  12
  13 fn main() {
  14     let mut mask = InitMask::new(Size::from_bytes(500), false);
  15     assert!(!mask.get(Size::from_bytes(499)));
  16     mask.set(Size::from_bytes(499), true);
  17     assert!(mask.get(Size::from_bytes(499)));
  18     mask.set_range_inbounds(Size::from_bytes(100), Size::from_bytes(256), true);
  19     for i in 0..100 {
  20         assert!(!mask.get(Size::from_bytes(i)));
  21     }
  22     for i in 100..256 {
  23         assert!(mask.get(Size::from_bytes(i)));
  24     }
  25     for i in 256..499 {
  26         assert!(!mask.get(Size::from_bytes(i)));
  27     }
  28 }