49 lines
742 B
Rust
49 lines
742 B
Rust
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//@ known-bug: #119095
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//@ compile-flags: --edition=2021
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fn any<T>() -> T {
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loop {}
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}
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trait Acquire {
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type Connection;
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}
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impl Acquire for &'static () {
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type Connection = ();
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}
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trait Unit {}
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impl Unit for () {}
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fn get_connection<T>() -> impl Unit
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where
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T: Acquire,
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T::Connection: Unit,
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{
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any::<T::Connection>()
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}
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fn main() {
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let future = async { async { get_connection::<&'static ()>() }.await };
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future.resolve_me();
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}
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trait ResolveMe {
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fn resolve_me(self);
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}
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impl<S> ResolveMe for S
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where
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(): CheckSend<S>,
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{
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fn resolve_me(self) {}
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}
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trait CheckSend<F> {}
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impl<F> CheckSend<F> for () where F: Send {}
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trait NeverImplemented {}
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impl<E, F> CheckSend<F> for E where E: NeverImplemented {}
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