rust/tests/ui/lifetimes/lifetime-errors/ex3-both-anon-regions-both-are-structs-3.rs

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struct Ref<'a, 'b> {
a: &'a u32,
b: &'b u32,
}
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fn foo(mut x: Ref) {
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x.a = x.b;
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//~^ ERROR lifetime may not live long enough
}
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fn main() {}