36 lines
762 B
Rust
36 lines
762 B
Rust
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// run-pass
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use std::cell::RefCell;
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use std::cmp::Ordering;
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struct Evil<'a, 'b> {
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values: RefCell<Vec<&'a str>>,
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to_insert: &'b String,
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}
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impl<'a, 'b> PartialEq for Evil<'a, 'b> {
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fn eq(&self, _other: &Self) -> bool {
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true
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}
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}
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impl<'a> PartialOrd for Evil<'a, 'a> {
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fn partial_cmp(&self, _other: &Self) -> Option<Ordering> {
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self.values.borrow_mut().push(self.to_insert);
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None
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}
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}
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fn main() {
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let e;
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let values;
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{
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let to_insert = String::from("Hello, world!");
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e = Evil { values: RefCell::new(Vec::new()), to_insert: &to_insert };
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let range = &e..=&e;
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let _ = range == range;
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values = e.values;
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}
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assert_eq!(*values.borrow(), Vec::<&str>::new());
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}
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