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29 lines
529 B
Rust
29 lines
529 B
Rust
// run-pass
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#![allow(dead_code)]
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trait IDummy {
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fn do_nothing(&self);
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}
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#[derive(Debug)]
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struct A { a: isize }
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#[derive(Debug)]
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struct B<'a> { b: isize, pa: &'a A }
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impl IDummy for A {
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fn do_nothing(&self) {
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println!("A::do_nothing() is called");
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}
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}
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impl<'a> B<'a> {
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fn get_pa(&self) -> &'a dyn IDummy { self.pa as &'a dyn IDummy }
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}
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pub fn main() {
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let sa = A { a: 100 };
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let sb = B { b: 200, pa: &sa };
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println!("sa is {:?}", sa);
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println!("sb is {:?}", sb);
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}
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