42 lines
1.2 KiB
Rust
42 lines
1.2 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-android
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// ignore-arm
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// ignore-aarch64
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// ignore-s390x
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// ignore-emscripten
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// ignore-powerpc
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#![feature(asm, rustc_attrs)]
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#![allow(dead_code, non_upper_case_globals)]
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#[cfg(any(target_arch = "x86",
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target_arch = "x86_64"))]
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#[rustc_error]
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pub fn main() { //~ ERROR compilation successful
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// assignment not dead
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let mut x: isize = 0;
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unsafe {
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// extra colon
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asm!("mov $1, $0" : "=r"(x) : "r"(5_usize), "0"(x) : : "cc");
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//~^ WARNING unrecognized option
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}
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assert_eq!(x, 5);
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unsafe {
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// comma in place of a colon
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asm!("add $2, $1; mov $1, $0" : "=r"(x) : "r"(x), "r"(8_usize) : "cc", "volatile");
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//~^ WARNING expected a clobber, found an option
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}
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assert_eq!(x, 13);
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}
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