mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 06:51:58 +00:00
23 lines
687 B
Rust
23 lines
687 B
Rust
// run-pass
|
|
// ignore-emscripten no threads
|
|
// compile-flags: -O
|
|
|
|
// Tests that the `vec!` macro does not overflow the stack when it is
|
|
// given data larger than the stack.
|
|
|
|
// FIXME(eddyb) Improve unoptimized codegen to avoid the temporary,
|
|
// and thus run successfully even when compiled at -C opt-level=0.
|
|
|
|
const LEN: usize = 1 << 15;
|
|
|
|
use std::thread::Builder;
|
|
|
|
fn main() {
|
|
assert!(Builder::new().stack_size(LEN / 2).spawn(|| {
|
|
// FIXME(eddyb) this can be vec![[0: LEN]] pending
|
|
// https://llvm.org/bugs/show_bug.cgi?id=28987
|
|
let vec = vec![unsafe { std::mem::zeroed::<[u8; LEN]>() }];
|
|
assert_eq!(vec.len(), 1);
|
|
}).unwrap().join().is_ok());
|
|
}
|