35 lines
785 B
Rust
35 lines
785 B
Rust
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#![allow(dead_code)]
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struct Events<R>(R);
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struct Other;
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pub trait Trait<T> {
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fn handle(value: T) -> Self;
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}
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// Blanket impl. (If you comment this out, compiler figures out that it
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// is passing an `&mut` to a method that must be expecting an `&mut`,
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// and injects an auto-reborrow.)
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impl<T, U> Trait<U> for T where T: From<U> {
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fn handle(_: U) -> Self { unimplemented!() }
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}
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impl<'a, R> Trait<&'a mut Events<R>> for Other {
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fn handle(_: &'a mut Events<R>) -> Self { unimplemented!() }
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}
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fn this_compiles<'a, R>(value: &'a mut Events<R>) {
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for _ in 0..3 {
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Other::handle(&mut *value);
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}
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}
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fn this_does_not<'a, R>(value: &'a mut Events<R>) {
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for _ in 0..3 {
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Other::handle(value); //~ ERROR use of moved value: `value`
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}
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}
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fn main() {}
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