rust/tests/run-make/intrinsic-unreachable/exit-unreachable.rs

20 lines
498 B
Rust

#![feature(core_intrinsics)]
#![crate_type = "lib"]
use std::arch::asm;
use std::intrinsics;
#[allow(unreachable_code)]
#[inline(never)]
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
}