[rustc.git] / tests / run-make / intrinsic-unreachable / exit-unreachable.rs

#![feature(core_intrinsics)]
#![crate_type="lib"]
use std::arch::asm;

use std::intrinsics;

#[allow(unreachable_code)]
pub fn exit(n: usize) -> i32 {
    unsafe {
        // Pretend this asm is an exit() syscall.
        asm!("/*{0}*/", in(reg) n);
        intrinsics::unreachable()
    }
    // This return value is just here to generate some extra code for a return
    // value, making it easier for the test script to detect whether the
    // compiler deleted it.
    42
}
Commit	Line	Data
5099ac24	1	#![feature(core_intrinsics)]
1a4d82fc	2	#![crate_type="lib"]
5099ac24	3	use std::arch::asm;
223e47cc	4
1a4d82fc	5	use std::intrinsics;
970d7e83	6
abe05a73 XL	7	#[allow(unreachable_code)]
abe05a73 XL	8	pub fn exit(n: usize) -> i32 {
970d7e83	9	unsafe {
1a4d82fc	10	// Pretend this asm is an exit() syscall.
5099ac24	11	asm!("/{0}/", in(reg) n);
1a4d82fc	12	intrinsics::unreachable()
970d7e83	13	}
abe05a73 XL	14	// This return value is just here to generate some extra code for a return
	15	// value, making it easier for the test script to detect whether the
	16	// compiler deleted it.
	17	42
223e47cc	18	}