1 // Copyright 2012-2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
14 // Tests that the `vec!` macro does not overflow the stack when it is
15 // given data larger than the stack.
17 // FIXME(eddyb) Improve unoptimized codegen to avoid the temporary,
18 // and thus run successfully even when compiled at -C opt-level=0.
20 const LEN: usize = 1 << 15;
22 use std::thread::Builder;
25 assert!(Builder::new().stack_size(LEN / 2).spawn(|| {
26 // FIXME(eddyb) this can be vec![[0: LEN]] pending
27 // https://llvm.org/bugs/show_bug.cgi?id=28987
28 let vec = vec![unsafe { std::mem::zeroed::<[u8; LEN]>() }];
29 assert_eq!(vec.len(), 1);
30 }).unwrap().join().is_ok());