mirror of https://github.com/rust-lang/rust
23 lines
483 B
Rust
23 lines
483 B
Rust
//@ check-pass
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//! This test checks that dropck knows that ManuallyDrop does not drop its field.
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#![feature(dropck_eyepatch)]
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use std::mem::ManuallyDrop;
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struct S<T>(ManuallyDrop<T>);
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unsafe impl<#[may_dangle] T> Drop for S<T> {
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fn drop(&mut self) {}
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}
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struct NonTrivialDrop<'a>(&'a str);
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impl<'a> Drop for NonTrivialDrop<'a> {
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fn drop(&mut self) {}
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}
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fn main() {
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let s = String::from("string");
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let _t = S(ManuallyDrop::new(NonTrivialDrop(&s)));
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drop(s);
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}
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