23 lines
397 B
Rust
23 lines
397 B
Rust
trait Foo {}
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struct Bar;
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impl Foo for Bar {}
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static mut DROP_COUNT: usize = 0;
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impl Drop for Bar {
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fn drop(&mut self) {
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unsafe {
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DROP_COUNT += 1;
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}
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}
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}
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fn main() {
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let b: [Box<dyn Foo>; 4] = [Box::new(Bar), Box::new(Bar), Box::new(Bar), Box::new(Bar)];
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assert_eq!(unsafe { DROP_COUNT }, 0);
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drop(b);
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assert_eq!(unsafe { DROP_COUNT }, 4);
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}
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