20 lines
552 B
Rust
20 lines
552 B
Rust
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use std::marker::PhantomPinned;
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use std::pin::Pin;
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trait MyUnpinTrait {
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fn into_pinned_type(self: Pin<&mut Self>) -> Pin<&mut PhantomPinned>;
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}
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impl MyUnpinTrait for PhantomPinned {
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fn into_pinned_type(self: Pin<&mut Self>) -> Pin<&mut PhantomPinned> {
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self
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}
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}
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impl Unpin for dyn MyUnpinTrait {} //~ ERROR E0321
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// It would be unsound for this function to compile.
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fn pin_it(not_yet_pinned: &mut PhantomPinned) -> Pin<&mut PhantomPinned> {
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Pin::new(not_yet_pinned as &mut dyn MyUnpinTrait).into_pinned_type()
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}
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fn main() {}
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