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