mirror of
https://github.com/rust-lang/rust
synced 2024-09-05 16:57:03 +00:00
27 lines
432 B
Rust
27 lines
432 B
Rust
use std::cell::RefCell;
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use std::rc::Rc;
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trait Foo {
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fn set(&mut self, v: Rc<RefCell<A>>);
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}
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struct B {
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v: Option<Rc<RefCell<A>>>
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}
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impl Foo for B {
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fn set(&mut self, v: Rc<RefCell<A>>)
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{
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self.v = Some(v);
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}
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}
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struct A {
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v: Box<dyn Foo + Send>,
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}
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fn main() {
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let a = A {v: Box::new(B{v: None}) as Box<dyn Foo + Send>};
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//~^ ERROR `Rc<RefCell<A>>` cannot be sent between threads safely
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}
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