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// compile-flags: -O
// run-pass
#![allow(unused_must_use)]
// Makes sure that zero-initializing large types is reasonably fast,
// Doing it incorrectly causes massive slowdown in LLVM during
// optimisation.
// pretty-expanded FIXME #23616
// ignore-emscripten no threads support
#![feature(intrinsics)]
use std::{mem, thread};
const SIZE: usize = 1024 * 1024;
fn main() {
// do the test in a new thread to avoid (spurious?) stack overflows
thread::spawn(|| {
let _memory: [u8; SIZE] = unsafe { mem::zeroed() };
}).join();
}
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