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Cherry-pick the LLVM fix for rust-lang#69225
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cuviper authored and Mark-Simulacrum committed Feb 28, 2020
1 parent 705b5bd commit 6f7372b
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33 changes: 33 additions & 0 deletions src/test/ui/issues/issue-69225-SCEVAddExpr-wrap-flag.rs
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// run-fail
// compile-flags: -C opt-level=3
// error-pattern: index out of bounds: the len is 0 but the index is 16777216
// ignore-wasm no panic or subprocess support
// ignore-emscripten no panic or subprocess support

fn do_test(x: usize) {
let mut arr = vec![vec![0u8; 3]];

let mut z = vec![0];
for arr_ref in arr.iter_mut() {
for y in 0..x {
for _ in 0..1 {
z.reserve_exact(x);
let iterator = std::iter::repeat(0).take(x);
let mut cnt = 0;
iterator.for_each(|_| {
z[0] = 0;
cnt += 1;
});
let a = y * x;
let b = (y + 1) * x - 1;
let slice = &mut arr_ref[a..b];
slice[1 << 24] += 1;
}
}
}
}

fn main() {
do_test(1);
do_test(2);
}

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