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

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