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use std::cell::Cell;
// const qualification is not smart enough to know about fields and always assumes that there might
// be other fields that caused the qualification
const FOO: &Option<Cell<usize>> = {
let mut a = (Some(Cell::new(0)),);
a.0 = None; // sets `qualif(a)` to `qualif(a) | qualif(None)`
&{a.0} //~ ERROR cannot refer to interior mutable
};
fn main() {}
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