aa3b1261b1
All deprecation warnings have been converted to errors. This includes the warning for multiple cfgs on one item. We'll leave that as an error for some period of time to ensure that all uses are updated before the behavior changes from "or" to "and".
55 lines
1.5 KiB
Rust
55 lines
1.5 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(asm, macro_rules)]
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type History = Vec<&'static str>;
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fn wrap<A>(x:A, which: &'static str, history: &mut History) -> A {
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history.push(which);
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x
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}
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macro_rules! demo {
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( $output_constraint:tt ) => {
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{
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let mut x: int = 0;
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let y: int = 1;
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let mut history: History = vec!();
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unsafe {
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asm!("mov ($1), $0"
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: $output_constraint (*wrap(&mut x, "out", &mut history))
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: "r"(&wrap(y, "in", &mut history)));
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}
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assert_eq!((x,y), (1,1));
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let b: &[_] = &["out", "in"];
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assert_eq!(history.as_slice(), b);
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}
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}
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}
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#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
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fn main() {
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fn out_write_only_expr_then_in_expr() {
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demo!("=r")
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}
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fn out_read_write_expr_then_in_expr() {
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demo!("+r")
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}
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out_write_only_expr_then_in_expr();
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out_read_write_expr_then_in_expr();
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}
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#[cfg(all(not(target_arch = "x86"), not(target_arch = "x86_64")))]
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pub fn main() {}
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