15 lines
681 B
Rust
15 lines
681 B
Rust
// Even with intptrcast and without validation, we want to be *sure* to catch bugs
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// that arise from pointers being insufficiently aligned. The only way to achieve
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// that is not not let programs exploit integer information for alignment, so here
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// we test that this is indeed the case.
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//
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// See https://github.com/rust-lang/miri/issues/1074.
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fn main() {
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let x = &mut [0u8; 3];
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let base_addr = x as *mut _ as usize;
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let base_addr_aligned = if base_addr % 2 == 0 { base_addr } else { base_addr+1 };
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let u16_ptr = base_addr_aligned as *mut u16;
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unsafe { *u16_ptr = 2; } //~ ERROR memory with alignment 1, but alignment 2 is required
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println!("{:?}", x);
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}
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