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// Copyright 2017 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.
// ignore-s390x
// ignore-emscripten
// ignore-powerpc
// ignore-sparc
// revisions: ast mir
//[mir]compile-flags: -Z borrowck=mir -Z nll
#![feature(asm)]
#[cfg(any(target_arch = "x86",
target_arch = "x86_64",
target_arch = "arm",
target_arch = "aarch64",
target_arch = "mips",
target_arch = "mips64"))]
mod test_cases {
fn is_move() {
let y: &mut isize;
let x = &mut 0isize;
unsafe {
asm!("nop" : : "r"(x));
}
let z = x; //[ast]~ ERROR use of moved value: `x`
//[mir]~^ ERROR use of moved value: `x`
}
fn in_is_read() {
let mut x = 3;
let y = &mut x;
unsafe {
asm!("nop" : : "r"(x)); //[ast]~ ERROR cannot use
//[mir]~^ ERROR cannot use
}
let z = y;
}
fn out_is_assign() {
let x = 3;
unsafe {
asm!("nop" : "=r"(x)); //[ast]~ ERROR cannot assign twice
//[mir]~^ ERROR cannot assign twice
}
let mut a = &mut 3;
let b = &*a;
unsafe {
asm!("nop" : "=r"(a)); //[ast]~ ERROR cannot assign to `a` because it is borrowed
// No MIR error, this is a shallow write.
}
let c = b;
let d = *a;
}
fn rw_is_assign() {
let x = 3;
unsafe {
asm!("nop" : "+r"(x)); //[ast]~ ERROR cannot assign twice
//[mir]~^ ERROR cannot assign twice
}
}
fn indirect_is_not_init() {
let x: i32;
unsafe {
asm!("nop" : "=*r"(x)); //[ast]~ ERROR use of possibly uninitialized variable
//[mir]~^ ERROR use of possibly uninitialized variable
}
}
fn rw_is_read() {
let mut x = &mut 3;
let y = &*x;
unsafe {
asm!("nop" : "+r"(x)); //[ast]~ ERROR cannot assign to `x` because it is borrowed
//[mir]~^ ERROR cannot assign to `x` because it is borrowed
}
let z = y;
}
fn two_moves() {
let x = &mut 2;
unsafe {
asm!("nop" : : "r"(x), "r"(x) ); //[ast]~ ERROR use of moved value
//[mir]~^ ERROR use of moved value
}
}
}
fn main() {}
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