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25 lines
724 B
Rust
25 lines
724 B
Rust
// run-pass
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// ignore-emscripten FIXME(#45351)
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#![feature(repr_simd, test)]
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extern crate test;
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#[repr(simd)]
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pub struct Mu64(pub u64, pub u64, pub u64, pub u64);
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fn main() {
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// This ensures an unaligned pointer even in optimized builds, though LLVM
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// gets enough type information to actually not mess things up in that case,
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// but at the time of writing this, it's enough to trigger the bug in
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// non-optimized builds
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unsafe {
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let memory = &mut [0u64; 8] as *mut _ as *mut u8;
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let misaligned_ptr: &mut [u8; 32] = {
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std::mem::transmute(memory.offset(1))
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};
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*misaligned_ptr = std::mem::transmute(Mu64(1, 1, 1, 1));
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test::black_box(memory);
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}
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}
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