bors 757b8efed4 Auto merge of #120712 - compiler-errors:async-closures-harmonize, r=oli-obk ... Harmonize `AsyncFn` implementations, make async closures conditionally impl `Fn*` traits This PR implements several changes to the built-in and libcore-provided implementations of `Fn*` and `AsyncFn*` to address two problems: 1. async closures do not implement the `Fn*` family traits, leading to breakage: https://crater-reports.s3.amazonaws.com/pr-120361/index.html 2. *references* to async closures do not implement `AsyncFn*`, as a consequence of the existing blanket impls of the shape `AsyncFn for F where F: Fn, F::Output: Future`. In order to fix (1.), we implement `Fn` traits appropriately for async closures. It turns out that async closures can: * always implement `FnOnce`, meaning that they're drop-in compatible with `FnOnce`-bound combinators like `Option::map`. * conditionally implement `Fn`/`FnMut` if they have no captures, which means that existing usages of async closures should *probably* work without breakage (crater checking this: https://github.com/rust-lang/rust/pull/120712#issuecomment-1930587805). In order to fix (2.), we make all of the built-in callables implement `AsyncFn*` via built-in impls, and instead adjust the blanket impls for `AsyncFn*` provided by libcore to match the blanket impls for `Fn*`.		2024-02-10 07:15:15 +00:00
..
auxiliary	Make async closures test use async bound modifier	2024-02-06 17:41:48 +00:00
arg-mismatch.rs	Add some tests	2024-02-06 02:22:58 +00:00
arg-mismatch.stderr	Add some tests	2024-02-06 02:22:58 +00:00
async-fn-mut-for-async-fn.rs	Build DebugInfo for coroutine-closure	2024-02-09 16:01:29 +00:00
async-fn-once-for-async-fn.rs	Build DebugInfo for coroutine-closure	2024-02-09 16:01:29 +00:00
await-inference-guidance.rs	Add some tests	2024-02-06 02:22:58 +00:00
brand.rs	Make async closures test use async bound modifier	2024-02-06 17:41:48 +00:00
def-path.rs	Fix drop shim for AsyncFnOnce closure, AsyncFnMut shim for AsyncFn closure	2024-02-06 02:22:58 +00:00
def-path.stderr	Fix drop shim for AsyncFnOnce closure, AsyncFnMut shim for AsyncFn closure	2024-02-06 02:22:58 +00:00
drop.rs	Make async closures test use async bound modifier	2024-02-06 17:41:48 +00:00
drop.run.stdout	Fix drop shim for AsyncFnOnce closure, AsyncFnMut shim for AsyncFn closure	2024-02-06 02:22:58 +00:00
higher-ranked-return.rs	Add some tests	2024-02-06 02:22:58 +00:00
higher-ranked-return.stderr	Add some tests	2024-02-06 02:22:58 +00:00
higher-ranked.rs	Add some tests	2024-02-06 02:22:58 +00:00
is-not-fn.rs	Prefer AsyncFn* over Fn* for coroutine-closures	2024-02-08 15:46:00 +00:00
is-not-fn.stderr	Prefer AsyncFn* over Fn* for coroutine-closures	2024-02-08 15:46:00 +00:00
mangle.rs	Make async closures test use async bound modifier	2024-02-06 17:41:48 +00:00
move-consuming-capture.rs	Add some tests	2024-02-06 02:22:58 +00:00
move-consuming-capture.stderr	Add some tests	2024-02-06 02:22:58 +00:00
move-is-async-fn.rs	Add some tests	2024-02-06 02:22:58 +00:00
mutate.rs	Add some tests	2024-02-06 02:22:58 +00:00
not-lending.rs	Add some tests	2024-02-06 02:22:58 +00:00
not-lending.stderr	Add some tests	2024-02-06 02:22:58 +00:00
once.rs	Add a couple more tests	2024-02-08 15:46:07 +00:00
refd.rs	Add a couple more tests	2024-02-08 15:46:07 +00:00
return-type-mismatch.rs	Add some tests	2024-02-06 02:22:58 +00:00
return-type-mismatch.stderr	Add some tests	2024-02-06 02:22:58 +00:00
tainted-body.rs	Don't ICE in ByMoveBody when coroutine is tainted	2024-02-09 00:36:30 +00:00
tainted-body.stderr	Don't ICE in ByMoveBody when coroutine is tainted	2024-02-09 00:36:30 +00:00
wrong-fn-kind.rs	Make async closures test use async bound modifier	2024-02-06 17:41:48 +00:00
wrong-fn-kind.stderr	Make async closures test use async bound modifier	2024-02-06 17:41:48 +00:00