rust/tests/ui/nll/closure-requirements/propagate-multiple-requirements.rs

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// Test that we propagate *all* requirements to the caller, not just the first
// one.
fn once<S, T, U, F: FnOnce(S, T) -> U>(f: F, s: S, t: T) -> U {
f(s, t)
}
pub fn dangle() -> &'static [i32] {
let other_local_arr = [0, 2, 4];
let local_arr = other_local_arr;
let mut out: &mut &'static [i32] = &mut (&[1] as _);
once(|mut z: &[i32], mut out_val: &mut &[i32]| {
// We unfortunately point to the first use in the closure in the error
// message
z = &local_arr; //~ ERROR
*out_val = &local_arr;
}, &[] as &[_], &mut *out);
*out
}
fn main() {
println!("{:?}", dangle());
}