mirror of https://github.com/rust-lang/rust
38 lines
726 B
Rust
38 lines
726 B
Rust
//@ run-pass
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#![allow(dead_code)]
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// Ensures that destructors are run for expressions of the form "e;" where
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// `e` is a type which requires a destructor.
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#![allow(path_statements)]
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struct A { n: isize }
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struct B;
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static mut NUM_DROPS: usize = 0;
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impl Drop for A {
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fn drop(&mut self) {
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unsafe { NUM_DROPS += 1; }
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}
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}
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impl Drop for B {
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fn drop(&mut self) {
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unsafe { NUM_DROPS += 1; }
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}
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}
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fn main() {
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assert_eq!(unsafe { NUM_DROPS }, 0);
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{ let _a = A { n: 1 }; }
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assert_eq!(unsafe { NUM_DROPS }, 1);
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{ A { n: 3 }; }
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assert_eq!(unsafe { NUM_DROPS }, 2);
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{ let _b = B; }
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assert_eq!(unsafe { NUM_DROPS }, 3);
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{ B; }
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assert_eq!(unsafe { NUM_DROPS }, 4);
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}
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