29 lines
588 B
Rust
29 lines
588 B
Rust
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iface box_iface<T> {
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fn get() -> T;
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fn set(t: T);
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}
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enum box_impl<T> = {
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mut f: T
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};
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impl<T:copy> of box_iface<T> for box_impl<T> {
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fn get() -> T { ret self.f; }
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fn set(t: T) { self.f = t; }
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}
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fn set_box_iface<T>(b: box_iface<@const T>, v: @const T) {
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b.set(v);
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}
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fn set_box_impl<T>(b: box_impl<@const T>, v: @const T) {
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b.set(v);
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}
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fn main() {
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let b = box_impl::<@int>({mut f: @3});
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set_box_iface(b as box_iface::<@int>, @mut 5);
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//!^ ERROR values differ in mutability
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set_box_impl(b, @mut 5);
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//!^ ERROR values differ in mutability
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}
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