mirror of https://github.com/rust-lang/rust
30 lines
775 B
Rust
30 lines
775 B
Rust
// Ensure we appropriately error instead of overflowing a calculation when creating a new Alloc
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// Layout
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//@ run-fail
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//@ compile-flags: -C opt-level=3
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//@ error-pattern: index out of bounds: the len is 0 but the index is 16777216
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fn do_test(x: usize) {
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let arr = vec![vec![0u8; 3]];
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let mut z = Vec::new();
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for arr_ref in arr {
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for y in 0..x {
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for _ in 0..1 {
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z.extend(std::iter::repeat(0).take(x));
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let a = y * x;
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let b = (y + 1) * x - 1;
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let slice = &arr_ref[a..b];
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eprintln!("{} {} {} {}", a, b, arr_ref.len(), slice.len());
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eprintln!("{:?}", slice[1 << 24]);
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}
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}
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}
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}
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fn main() {
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do_test(1);
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do_test(2);
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}
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