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//@ run-pass
//@ revisions: mir codegen
//@[mir] compile-flags: -Zmir-opt-level=3
//@[codegen] compile-flags: -Zmir-opt-level=0
// A regression test for #107205
const X: for<'b> fn(&'b ()) = |&()| ();
fn main() {
let dyn_debug = Box::new(X) as Box<fn(&'static ())> as Box<dyn Send>;
drop(dyn_debug)
}
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