rust/tests/run-pass/pointers.rs
2016-04-14 14:54:59 +02:00

61 lines
886 B
Rust

#![crate_type = "lib"]
#![feature(custom_attribute)]
#![allow(dead_code, unused_attributes)]
#[miri_run]
fn one_line_ref() -> i16 {
*&1
}
#[miri_run]
fn basic_ref() -> i16 {
let x = &1;
*x
}
#[miri_run]
fn basic_ref_mut() -> i16 {
let x = &mut 1;
*x += 2;
*x
}
#[miri_run]
fn basic_ref_mut_var() -> i16 {
let mut a = 1;
{
let x = &mut a;
*x += 2;
}
a
}
#[miri_run]
fn tuple_ref_mut() -> (i8, i8) {
let mut t = (10, 20);
{
let x = &mut t.1;
*x += 2;
}
t
}
#[miri_run]
fn match_ref_mut() -> i8 {
let mut t = (20, 22);
{
let mut opt = Some(&mut t);
match opt {
Some(&mut (ref mut x, ref mut y)) => *x += *y,
None => {},
}
}
t.0
}
#[miri_run]
fn dangling_pointer() -> *const i32 {
let b = Box::new(42);
&*b as *const i32
}