31 lines
513 B
Rust
31 lines
513 B
Rust
//@ run-pass
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// Tests that you can use a fn lifetime parameter as part of
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// the value for a type parameter in a bound.
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trait GetRef<'a> {
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fn get(&self) -> &'a isize;
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}
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#[derive(Copy, Clone)]
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struct Box<'a> {
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t: &'a isize
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}
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impl<'a> GetRef<'a> for Box<'a> {
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fn get(&self) -> &'a isize {
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self.t
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}
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}
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impl<'a> Box<'a> {
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fn add<'b,G:GetRef<'b>>(&self, g2: G) -> isize {
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*self.t + *g2.get()
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}
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}
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pub fn main() {
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let b1 = Box { t: &3 };
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assert_eq!(b1.add(b1), 6);
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}
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