1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
// Copyright 2012-2014 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-android
#![feature(asm, rustc_attrs)]
#![allow(dead_code, non_upper_case_globals)]
#[cfg(any(target_arch = "x86",
target_arch = "x86_64"))]
#[rustc_error]
pub fn main() { //~ ERROR compilation successful
// assignment not dead
let mut x: isize = 0;
unsafe {
// extra colon
asm!("mov $1, $0" : "=r"(x) : "r"(5_usize), "0"(x) : : "cc");
//~^ WARNING unrecognized option
}
assert_eq!(x, 5);
unsafe {
// comma in place of a colon
asm!("add $2, $1; mov $1, $0" : "=r"(x) : "r"(x), "r"(8_usize) : "cc", "volatile");
//~^ WARNING expected a clobber, found an option
}
assert_eq!(x, 13);
}
|
