18 lines
464 B
Rust
18 lines
464 B
Rust
// error-pattern: deallocating while item is protected
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use std::cell::Cell;
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// Check that even `&Cell` are dereferenceable.
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// Also see <https://github.com/rust-lang/rust/issues/55005>.
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fn inner(x: &Cell<i32>, f: fn(&Cell<i32>)) {
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// `f` may mutate, but it may not deallocate!
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f(x)
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}
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fn main() {
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inner(Box::leak(Box::new(Cell::new(0))), |x| {
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let raw = x as *const _ as *mut Cell<i32>;
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drop(unsafe { Box::from_raw(raw) });
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});
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}
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