From: bors <bors@rust-lang.org>
Date: Mon, 31 Aug 2020 19:20:30 +0000 (+0000)
Subject: Auto merge of #5909 - khuey:async_yields_async, r=yaahc
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=8334a58c2f949fd5f1e2c131ae7b614498bae746;p=rust.git

Auto merge of #5909 - khuey:async_yields_async, r=yaahc

Add a lint for an async block/closure that yields a type that is itself awaitable.

This catches bugs of the form

tokio::spawn(async move {
    let f = some_async_thing();
    f // Oh no I forgot to await f so that work will never complete.
});

See the two XXXkhuey comments and the unfixed `_l` structure for things that need more thought.

*Please keep the line below*
changelog: none
---

8334a58c2f949fd5f1e2c131ae7b614498bae746