24 lines
464 B
Rust
24 lines
464 B
Rust
// run-pass
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#![feature(box_syntax)]
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use std::collections::HashMap;
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trait Graph<Node, Edge> {
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fn f(&self, _: Edge);
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fn g(&self, _: Node);
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}
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impl<E> Graph<isize, E> for HashMap<isize, isize> {
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fn f(&self, _e: E) {
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panic!();
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}
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fn g(&self, _e: isize) {
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panic!();
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}
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}
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pub fn main() {
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let g : Box<HashMap<isize,isize>> = box HashMap::new();
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let _g2 : Box<dyn Graph<isize,isize>> = g as Box<dyn Graph<isize,isize>>;
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}
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