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Cherry-pick the LLVM fix for rust-lang#69225
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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 | ||
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fn do_test(x: usize) { | ||
let mut arr = vec![vec![0u8; 3]]; | ||
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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; | ||
} | ||
} | ||
} | ||
} | ||
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fn main() { | ||
do_test(1); | ||
do_test(2); | ||
} |