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Scott Olson
24 lines
504 B
Rust
24 lines
504 B
Rust
#![feature(custom_attribute, box_syntax)]
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#![allow(dead_code, unused_attributes)]
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// error-pattern:can't handle destination layout StructWrappedNullablePointer
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use std::cell::RefCell;
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use std::rc::Rc;
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struct Loop(Rc<RefCell<Option<Loop>>>);
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#[miri_run]
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fn rc_reference_cycle() -> Loop {
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let a = Rc::new(RefCell::new(None));
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let b = a.clone();
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*a.borrow_mut() = Some(Loop(b));
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Loop(a)
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}
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#[miri_run]
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fn main() {
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let x = rc_reference_cycle().0;
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assert!(x.borrow().is_some());
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}
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