a0e54c7761
A couple of syntax extensions manually expanded expressions, but it wasn't done universally, most noticably inside of asm!(). There's also a bit of random cleanup.
36 lines
1.0 KiB
Rust
36 lines
1.0 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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// ignore-fast #[feature] doesn't work with check-fast
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#[feature(asm)];
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#[cfg(target_arch = "x86")]
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#[cfg(target_arch = "x86_64")]
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pub fn main() {
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let x: int;
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unsafe {
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// Treat the output as initialization.
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asm!("mov $1, $0" : "=r"(x) : "r"(5u));
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}
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assert_eq!(x, 5);
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let mut x = x + 1;
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assert_eq!(x, 6);
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unsafe {
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// Assignment to mutable.
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asm!("mov $1, $0" : "=r"(x) : "r"(x + 7));
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}
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assert_eq!(x, 13);
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}
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#[cfg(not(target_arch = "x86"), not(target_arch = "x86_64"))]
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pub fn main() {}
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