mirror of https://github.com/rust-lang/rust
34 lines
510 B
Rust
34 lines
510 B
Rust
//@ run-pass
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static mut DROP_RAN: bool = false;
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trait Bar {
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fn do_something(&mut self); //~ WARN method `do_something` is never used
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}
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struct BarImpl;
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impl Bar for BarImpl {
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fn do_something(&mut self) {}
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}
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struct Foo<B: Bar>(#[allow(dead_code)] B);
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impl<B: Bar> Drop for Foo<B> {
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fn drop(&mut self) {
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unsafe {
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DROP_RAN = true;
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}
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}
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}
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fn main() {
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{
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let _x: Foo<BarImpl> = Foo(BarImpl);
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}
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unsafe {
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assert_eq!(DROP_RAN, true);
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}
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}
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