rust/compiler/rustc_lint
bors d7ad9d9797 Auto merge of #111530 - Urgau:uplift_undropped_manually_drops, r=compiler-errors
Uplift `clippy::undropped_manually_drops` lint

This PR aims at uplifting the `clippy::undropped_manually_drops` lint.

## `undropped_manually_drops`

(warn-by-default)

The `undropped_manually_drops` lint check for calls to `std::mem::drop` with a value of `std::mem::ManuallyDrop` which doesn't drop.

### Example

```rust
struct S;
drop(std::mem::ManuallyDrop::new(S));
```

### Explanation

`ManuallyDrop` does not drop it's inner value so calling `std::mem::drop` will not drop the inner value of the `ManuallyDrop` either.

-----

Mostly followed the instructions for uplifting an clippy lint described here: https://github.com/rust-lang/rust/pull/99696#pullrequestreview-1134072751

`@rustbot` label: +I-lang-nominated
r? compiler

-----

For Clippy:

changelog: Moves: Uplifted `clippy::undropped_manually_drops` into rustc
2023-06-09 12:44:23 +00:00
..
src Auto merge of #111530 - Urgau:uplift_undropped_manually_drops, r=compiler-errors 2023-06-09 12:44:23 +00:00
Cargo.toml Add rustc_fluent_macro to decouple fluent from rustc_macros 2023-04-18 18:56:22 +00:00
messages.ftl Uplift clippy::undropped_manually_drops to rustc 2023-06-08 11:41:34 +02:00