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// run-pass #![allow(dead_code)] // pretty-expanded FIXME #23616 fn sum(x: &[isize]) -> isize { let mut sum = 0; for y in x { sum += *y; } return sum; } fn sum_mut(y: &mut [isize]) -> isize { sum(y) } fn sum_imm(y: &[isize]) -> isize { sum(y) } pub fn main() {}