mirror of https://github.com/rust-lang/rust
18 lines
304 B
Rust
18 lines
304 B
Rust
//@ run-pass
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// regression test for issue #41498.
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struct S;
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impl S {
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fn mutate(&mut self) {}
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}
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fn call_and_ref<T, F: FnOnce() -> T>(x: &mut Option<T>, f: F) -> &mut T {
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*x = Some(f());
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x.as_mut().unwrap()
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}
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fn main() {
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let mut n = None;
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call_and_ref(&mut n, || [S])[0].mutate();
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}
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