56 lines
991 B
Rust
56 lines
991 B
Rust
//@ run-pass
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#![allow(unused_variables)]
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/*
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# ICE when returning struct with reference to trait
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A function which takes a reference to a trait and returns a
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struct with that reference results in an ICE.
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This does not occur with concrete types, only with references
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to traits.
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*/
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// original
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trait Inner {
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fn print(&self);
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}
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impl Inner for isize {
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fn print(&self) { print!("Inner: {}\n", *self); }
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}
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struct Outer<'a> {
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inner: &'a (dyn Inner+'a)
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}
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impl<'a> Outer<'a> {
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fn new(inner: &dyn Inner) -> Outer {
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Outer {
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inner: inner
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}
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}
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}
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pub fn main() {
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let inner: isize = 5;
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let outer = Outer::new(&inner as &dyn Inner);
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outer.inner.print();
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}
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// minimal
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pub trait MyTrait<T> {
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fn dummy(&self, t: T) -> T { panic!() }
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}
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pub struct MyContainer<'a, T:'a> {
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foos: Vec<&'a (dyn MyTrait<T>+'a)> ,
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}
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impl<'a, T> MyContainer<'a, T> {
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pub fn add (&mut self, foo: &'a dyn MyTrait<T>) {
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self.foos.push(foo);
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}
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}
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