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use std::mem;
#[allow(unused)]
struct MySlice {
prefix: u64,
tail: [u8],
}
fn main() {
unsafe {
let ptr = Box::into_raw(Box::new(0u8));
// The slice part is actually not "too big", but together with the `prefix` field it is.
let _x: &MySlice = mem::transmute((ptr, isize::MAX as usize)); //~ ERROR: invalid reference metadata: total size is bigger than largest supported object
}
}
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