mirror of https://github.com/rust-lang/rust
23 lines
675 B
Rust
23 lines
675 B
Rust
//@ run-pass
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//@ needs-threads
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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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