File: ex3-both-anon-regions-one-is-struct-2.rs

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struct Ref<'a, 'b> { a: &'a u32, b: &'b u32 }

fn foo(mut x: Ref, y: &u32) {
    y = x.b;
    //~^ ERROR lifetime may not live long enough
    //~| ERROR cannot assign to immutable argument
}

fn main() { }