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//@ check-pass
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//@ compile-flags:-Zpolymorphize=on
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pub struct OnDrop<F: Fn()>(pub F);
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impl<F: Fn()> Drop for OnDrop<F> {
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fn drop(&mut self) { }
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}
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fn foo<R, S: FnOnce()>(
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_: R,
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_: S,
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) {
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let bar = || {
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let _ = OnDrop(|| ());
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};
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bar();
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}
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fn main() {
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foo(3u32, || {});
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}
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