rust/tests/compile-fail/transmute_fat2.rs

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fn main() {
#[cfg(target_pointer_width="64")]
let bad = unsafe {
std::mem::transmute::<u128, &[u8]>(42)
};
#[cfg(target_pointer_width="32")]
let bad = unsafe {
std::mem::transmute::<u64, &[u8]>(42)
};
bad[0]; //~ ERROR constant evaluation error [E0080]
//~^ NOTE index out of bounds: the len is 0 but the index is 0
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}