20 lines
571 B
Rust
20 lines
571 B
Rust
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iface repeat<A> { fn get() -> A; }
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impl<A:copy> of repeat<A> for @A {
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fn get() -> A { *self }
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}
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fn repeater<A:copy>(v: @A) -> repeat<A> {
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// Note: owned kind is not necessary as A appears in the iface type
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v as repeat::<A> // No
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}
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fn main() {
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// Here, an error results as the type of y is inferred to
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// repeater<</3> where lt is the block.
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let y = { //~ ERROR reference is not valid outside of its lifetime
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let x = &3;
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repeater(@x)
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};
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assert 3 == *(y.get()); //~ ERROR reference is not valid outside of its lifetime
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}
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