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async.await Call for Tests

Existing Tests

Generators

ui:

disallow lifetime introspection for auto trait selection

yielding references to locals is an error

dropck applies appropriately to upvars

region requirements apply correctly to output

borrow in use when generator yields

and another

and another (in if let w/ ref pattern)

and another (with iterators)

and another

and another (while ref)

arguments not allowed

inherits auto traits from upvars

borrowed local escapes from generator

yielded value must be Sized

static generators are not Unpin

mismatched return types

yield in disallowed places:

yield in args

yield in const

yield outside generators

yield in static

run-fail:

resume after panic

nll:

distinct lifetimes of locals

respect mutability of upvars

mir-opt:

drop shims should not have blocks spuriously marked as cleanup

generate StorageDead on unwind paths for generators

lots of run-pass

Async/await surface

run-pass:

async fn size

rustdoc:

async fn

async move in doctests (used to fail due to editions)

ui:

await is a 2018 edition keyword

async not allowed in 2015 edition

async fn argument desugaring:

drop order for async fn parameters

async fn argument-position patterns

test that we don’t show the desugared variables in error messages

binding mutability

misc / smoke test (simple by-value and borrowed arguments)

multiple lifetimes