2021-03-25 06:44:30 -05:00
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// Some optimizations remove ZST accesses, thus masking this UB.
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// compile-flags: -Zmir-opt-level=0
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2018-09-15 09:35:37 -05:00
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fn main() {
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// This pointer *could* be NULL so we cannot load from it, not even at ZST.
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// Not using the () type here, as writes of that type do not even have MIR generated.
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// Also not assigning directly as that's array initialization, not assignment.
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let zst_val = [1u8; 0];
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let ptr = (&0u8 as *const u8).wrapping_sub(0x800) as *mut [u8; 0];
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2022-06-21 13:38:02 -05:00
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unsafe {
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2022-06-21 13:40:02 -05:00
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*ptr = zst_val; //~ ERROR out-of-bounds
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}
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2018-09-15 09:35:37 -05:00
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}
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