Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1586 insertions, 0 deletions

diff --git a/third_party/rust/async-trait/tests/test.rs b/third_party/rust/async-trait/tests/test.rs
new file mode 100644
index 0000000000..458904e162
--- /dev/null
+++ b/third_party/rust/async-trait/tests/test.rs
@@ -0,0 +1,1586 @@
+#![cfg_attr(
+    async_trait_nightly_testing,
+    feature(min_specialization, type_alias_impl_trait)
+)]
+#![deny(rust_2021_compatibility)]
+#![allow(
+    clippy::let_unit_value,
+    clippy::missing_panics_doc,
+    clippy::missing_safety_doc,
+    clippy::needless_return,
+    clippy::trivially_copy_pass_by_ref,
+    clippy::unused_async
+)]
+
+use async_trait::async_trait;
+
+pub mod executor;
+
+// Dummy module to check that the expansion refer to rust's core crate
+mod core {}
+
+#[async_trait]
+trait Trait {
+    type Assoc;
+
+    async fn selfvalue(self)
+    where
+        Self: Sized,
+    {
+    }
+
+    async fn selfref(&self) {}
+
+    async fn selfmut(&mut self) {}
+
+    async fn required() -> Self::Assoc;
+
+    async fn elided_lifetime(_x: &str) {}
+
+    async fn explicit_lifetime<'a>(_x: &'a str) {}
+
+    async fn generic_type_param<T: Send>(x: Box<T>) -> T {
+        *x
+    }
+
+    async fn calls(&self) {
+        self.selfref().await;
+        Self::elided_lifetime("").await;
+        <Self>::elided_lifetime("").await;
+    }
+
+    async fn calls_mut(&mut self) {
+        self.selfmut().await;
+    }
+}
+
+struct Struct;
+
+#[async_trait]
+impl Trait for Struct {
+    type Assoc = ();
+
+    async fn selfvalue(self) {}
+
+    async fn selfref(&self) {}
+
+    async fn selfmut(&mut self) {}
+
+    async fn required() -> Self::Assoc {}
+
+    async fn elided_lifetime(_x: &str) {}
+
+    async fn explicit_lifetime<'a>(_x: &'a str) {}
+
+    async fn generic_type_param<T: Send>(x: Box<T>) -> T {
+        *x
+    }
+
+    async fn calls(&self) {
+        self.selfref().await;
+        Self::elided_lifetime("").await;
+        <Self>::elided_lifetime("").await;
+    }
+
+    async fn calls_mut(&mut self) {
+        self.selfmut().await;
+    }
+}
+
+pub async fn test() {
+    let mut s = Struct;
+    s.selfref().await;
+    s.selfmut().await;
+    s.selfvalue().await;
+
+    Struct::required().await;
+    Struct::elided_lifetime("").await;
+    Struct::explicit_lifetime("").await;
+    Struct::generic_type_param(Box::new("")).await;
+
+    let mut s = Struct;
+    s.calls().await;
+    s.calls_mut().await;
+}
+
+pub async fn test_object_safe_without_default() {
+    #[async_trait]
+    trait ObjectSafe {
+        async fn f(&self);
+    }
+
+    #[async_trait]
+    impl ObjectSafe for Struct {
+        async fn f(&self) {}
+    }
+
+    let object = &Struct as &dyn ObjectSafe;
+    object.f().await;
+}
+
+pub async fn test_object_safe_with_default() {
+    #[async_trait]
+    trait ObjectSafe: Sync {
+        async fn f(&self) {}
+    }
+
+    #[async_trait]
+    impl ObjectSafe for Struct {
+        async fn f(&self) {}
+    }
+
+    let object = &Struct as &dyn ObjectSafe;
+    object.f().await;
+}
+
+pub async fn test_object_no_send() {
+    #[async_trait(?Send)]
+    trait ObjectSafe: Sync {
+        async fn f(&self) {}
+    }
+
+    #[async_trait(?Send)]
+    impl ObjectSafe for Struct {
+        async fn f(&self) {}
+    }
+
+    let object = &Struct as &dyn ObjectSafe;
+    object.f().await;
+}
+
+#[async_trait]
+pub unsafe trait UnsafeTrait {}
+
+#[async_trait]
+unsafe impl UnsafeTrait for () {}
+
+#[async_trait]
+pub(crate) unsafe trait UnsafeTraitPubCrate {}
+
+#[async_trait]
+unsafe trait UnsafeTraitPrivate {}
+
+pub async fn test_can_destruct() {
+    #[async_trait]
+    trait CanDestruct {
+        async fn f(&self, foos: (u8, u8, u8, u8));
+    }
+
+    #[async_trait]
+    impl CanDestruct for Struct {
+        async fn f(&self, (a, ref mut b, ref c, d): (u8, u8, u8, u8)) {
+            let _a: u8 = a;
+            let _b: &mut u8 = b;
+            let _c: &u8 = c;
+            let _d: u8 = d;
+        }
+    }
+}
+
+pub async fn test_self_in_macro() {
+    #[async_trait]
+    trait Trait {
+        async fn a(self);
+        async fn b(&mut self);
+        async fn c(&self);
+    }
+
+    #[async_trait]
+    impl Trait for String {
+        async fn a(self) {
+            println!("{}", self);
+        }
+        async fn b(&mut self) {
+            println!("{}", self);
+        }
+        async fn c(&self) {
+            println!("{}", self);
+        }
+    }
+}
+
+pub async fn test_inference() {
+    #[async_trait]
+    pub trait Trait {
+        async fn f() -> Box<dyn Iterator<Item = ()>> {
+            Box::new(std::iter::empty())
+        }
+    }
+}
+
+pub async fn test_internal_items() {
+    #[async_trait]
+    #[allow(dead_code, clippy::items_after_statements)]
+    pub trait Trait: Sized {
+        async fn f(self) {
+            struct Struct;
+
+            impl Struct {
+                fn f(self) {
+                    let _ = self;
+                }
+            }
+        }
+    }
+}
+
+pub async fn test_unimplemented() {
+    #[async_trait]
+    pub trait Trait {
+        async fn f() {
+            unimplemented!()
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/1
+pub mod issue1 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Issue1 {
+        async fn f<U>(&self);
+    }
+
+    #[async_trait]
+    impl<T: Sync> Issue1 for Vec<T> {
+        async fn f<U>(&self) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/2
+pub mod issue2 {
+    use async_trait::async_trait;
+    use std::future::Future;
+
+    #[async_trait]
+    pub trait Issue2: Future {
+        async fn flatten(self) -> <Self::Output as Future>::Output
+        where
+            Self::Output: Future + Send,
+            Self: Sized,
+        {
+            let nested_future = self.await;
+            nested_future.await
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/9
+pub mod issue9 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Issue9: Sized + Send {
+        async fn f(_x: Self) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/11
+pub mod issue11 {
+    use async_trait::async_trait;
+    use std::sync::Arc;
+
+    #[async_trait]
+    trait Issue11 {
+        async fn example(self: Arc<Self>);
+    }
+
+    struct Struct;
+
+    #[async_trait]
+    impl Issue11 for Struct {
+        async fn example(self: Arc<Self>) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/15
+pub mod issue15 {
+    use async_trait::async_trait;
+    use std::marker::PhantomData;
+
+    trait Trait {}
+
+    #[async_trait]
+    trait Issue15 {
+        async fn myfn(&self, _: PhantomData<dyn Trait + Send>) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/17
+pub mod issue17 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Issue17 {
+        async fn f(&self);
+    }
+
+    struct Struct {
+        string: String,
+    }
+
+    #[async_trait]
+    impl Issue17 for Struct {
+        async fn f(&self) {
+            println!("{}", self.string);
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/23
+pub mod issue23 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Issue23 {
+        async fn f(self);
+
+        async fn g(mut self)
+        where
+            Self: Sized,
+        {
+            do_something(&mut self);
+        }
+    }
+
+    struct S {}
+
+    #[async_trait]
+    impl Issue23 for S {
+        async fn f(mut self) {
+            do_something(&mut self);
+        }
+    }
+
+    fn do_something<T>(_: &mut T) {}
+}
+
+// https://github.com/dtolnay/async-trait/issues/25
+#[cfg(async_trait_nightly_testing)]
+pub mod issue25 {
+    use crate::executor;
+    use async_trait::async_trait;
+    use std::fmt::{Display, Write};
+
+    #[async_trait]
+    trait AsyncToString {
+        async fn async_to_string(&self) -> String;
+    }
+
+    #[async_trait]
+    impl AsyncToString for String {
+        async fn async_to_string(&self) -> String {
+            "special".to_owned()
+        }
+    }
+
+    macro_rules! hide_from_stable_parser {
+        ($($tt:tt)*) => {
+            $($tt)*
+        };
+    }
+
+    hide_from_stable_parser! {
+        #[async_trait]
+        impl<T: ?Sized + Display + Sync> AsyncToString for T {
+            default async fn async_to_string(&self) -> String {
+                let mut buf = String::new();
+                buf.write_fmt(format_args!("{}", self)).unwrap();
+                buf
+            }
+        }
+    }
+
+    #[test]
+    fn test() {
+        let fut = true.async_to_string();
+        assert_eq!(executor::block_on_simple(fut), "true");
+
+        let string = String::new();
+        let fut = string.async_to_string();
+        assert_eq!(executor::block_on_simple(fut), "special");
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/28
+pub mod issue28 {
+    use async_trait::async_trait;
+
+    struct Str<'a>(&'a str);
+
+    #[async_trait]
+    trait Trait1<'a> {
+        async fn f(x: Str<'a>) -> &'a str;
+        async fn g(x: Str<'a>) -> &'a str {
+            x.0
+        }
+    }
+
+    #[async_trait]
+    impl<'a> Trait1<'a> for str {
+        async fn f(x: Str<'a>) -> &'a str {
+            x.0
+        }
+    }
+
+    #[async_trait]
+    trait Trait2 {
+        async fn f();
+    }
+
+    #[async_trait]
+    impl<'a> Trait2 for &'a () {
+        async fn f() {}
+    }
+
+    #[async_trait]
+    trait Trait3<'a, 'b> {
+        async fn f(_: &'a &'b ()); // chain 'a and 'b
+        async fn g(_: &'b ()); // chain 'b only
+        async fn h(); // do not chain
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/31
+pub mod issue31 {
+    use async_trait::async_trait;
+
+    pub struct Struct<'a> {
+        pub name: &'a str,
+    }
+
+    #[async_trait]
+    pub trait Trait<'a> {
+        async fn hello(thing: Struct<'a>) -> String;
+        async fn hello_twice(one: Struct<'a>, two: Struct<'a>) -> String {
+            let str1 = Self::hello(one).await;
+            let str2 = Self::hello(two).await;
+            str1 + &str2
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/42
+pub mod issue42 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Context: Sized {
+        async fn from_parts() -> Self;
+    }
+
+    pub struct TokenContext;
+
+    #[async_trait]
+    impl Context for TokenContext {
+        async fn from_parts() -> TokenContext {
+            TokenContext
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/44
+pub mod issue44 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait StaticWithWhereSelf
+    where
+        Box<Self>: Sized,
+        Self: Sized + Send,
+    {
+        async fn get_one() -> u8 {
+            1
+        }
+    }
+
+    pub struct Struct;
+
+    #[async_trait]
+    impl StaticWithWhereSelf for Struct {}
+}
+
+// https://github.com/dtolnay/async-trait/issues/45
+pub mod issue45 {
+    use crate::executor;
+    use async_trait::async_trait;
+    use std::fmt::Debug;
+    use std::sync::atomic::{AtomicU64, Ordering};
+    use std::sync::{Arc, Mutex};
+    use tracing::event::Event;
+    use tracing::field::{Field, Visit};
+    use tracing::span::{Attributes, Id, Record};
+    use tracing::{info, instrument, subscriber, Metadata, Subscriber};
+
+    #[async_trait]
+    pub trait Parent {
+        async fn foo(&mut self, v: usize);
+    }
+
+    #[async_trait]
+    pub trait Child {
+        async fn bar(&self);
+    }
+
+    #[derive(Debug)]
+    struct Impl(usize);
+
+    #[async_trait]
+    impl Parent for Impl {
+        #[instrument]
+        async fn foo(&mut self, v: usize) {
+            self.0 = v;
+            self.bar().await;
+        }
+    }
+
+    #[async_trait]
+    impl Child for Impl {
+        // Let's check that tracing detects the renaming of the `self` variable
+        // too, as tracing::instrument is not going to be able to skip the
+        // `self` argument if it can't find it in the function signature.
+        #[instrument(skip(self))]
+        async fn bar(&self) {
+            info!(val = self.0);
+        }
+    }
+
+    // A simple subscriber implementation to test the behavior of async-trait
+    // with tokio-rs/tracing. This implementation is not robust against race
+    // conditions, but it's not an issue here as we are only polling on a single
+    // future at a time.
+    #[derive(Debug)]
+    struct SubscriberInner {
+        current_depth: AtomicU64,
+        // We assert that nested functions work. If the fix were to break, we
+        // would see two top-level functions instead of `bar` nested in `foo`.
+        max_depth: AtomicU64,
+        max_span_id: AtomicU64,
+        // Name of the variable / value / depth when the event was recorded.
+        value: Mutex<Option<(&'static str, u64, u64)>>,
+    }
+
+    #[derive(Debug, Clone)]
+    struct TestSubscriber {
+        inner: Arc<SubscriberInner>,
+    }
+
+    impl TestSubscriber {
+        fn new() -> Self {
+            TestSubscriber {
+                inner: Arc::new(SubscriberInner {
+                    current_depth: AtomicU64::new(0),
+                    max_depth: AtomicU64::new(0),
+                    max_span_id: AtomicU64::new(1),
+                    value: Mutex::new(None),
+                }),
+            }
+        }
+    }
+
+    struct U64Visitor(Option<(&'static str, u64)>);
+
+    impl Visit for U64Visitor {
+        fn record_debug(&mut self, _field: &Field, _value: &dyn Debug) {}
+
+        fn record_u64(&mut self, field: &Field, value: u64) {
+            self.0 = Some((field.name(), value));
+        }
+    }
+
+    impl Subscriber for TestSubscriber {
+        fn enabled(&self, _metadata: &Metadata) -> bool {
+            true
+        }
+        fn new_span(&self, _span: &Attributes) -> Id {
+            Id::from_u64(self.inner.max_span_id.fetch_add(1, Ordering::AcqRel))
+        }
+        fn record(&self, _span: &Id, _values: &Record) {}
+        fn record_follows_from(&self, _span: &Id, _follows: &Id) {}
+        fn event(&self, event: &Event) {
+            let mut visitor = U64Visitor(None);
+            event.record(&mut visitor);
+            if let Some((s, v)) = visitor.0 {
+                let current_depth = self.inner.current_depth.load(Ordering::Acquire);
+                *self.inner.value.lock().unwrap() = Some((s, v, current_depth));
+            }
+        }
+        fn enter(&self, _span: &Id) {
+            let old_depth = self.inner.current_depth.fetch_add(1, Ordering::AcqRel);
+            if old_depth + 1 > self.inner.max_depth.load(Ordering::Acquire) {
+                self.inner.max_depth.fetch_add(1, Ordering::AcqRel);
+            }
+        }
+        fn exit(&self, _span: &Id) {
+            self.inner.current_depth.fetch_sub(1, Ordering::AcqRel);
+        }
+    }
+
+    #[test]
+    #[cfg_attr(miri, ignore)] // https://github.com/matklad/once_cell/pull/185
+    fn tracing() {
+        // Create the future outside of the subscriber, as no call to tracing
+        // should be made until the future is polled.
+        let mut struct_impl = Impl(0);
+        let fut = struct_impl.foo(5);
+        let subscriber = TestSubscriber::new();
+        subscriber::with_default(subscriber.clone(), || executor::block_on_simple(fut));
+        // Did we enter bar inside of foo?
+        assert_eq!(subscriber.inner.max_depth.load(Ordering::Acquire), 2);
+        // Have we exited all spans?
+        assert_eq!(subscriber.inner.current_depth.load(Ordering::Acquire), 0);
+        // Did we create only two spans? Note: spans start at 1, hence the -1.
+        assert_eq!(subscriber.inner.max_span_id.load(Ordering::Acquire) - 1, 2);
+        // Was the value recorded at the right depth i.e. in the right function?
+        // If so, was it the expected value?
+        assert_eq!(*subscriber.inner.value.lock().unwrap(), Some(("val", 5, 2)));
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/46
+pub mod issue46 {
+    use async_trait::async_trait;
+
+    macro_rules! implement_commands_workaround {
+        ($tyargs:tt : $ty:tt) => {
+            #[async_trait]
+            pub trait AsyncCommands1: Sized {
+                async fn f<$tyargs: $ty>(&mut self, x: $tyargs) {
+                    self.f(x).await
+                }
+            }
+        };
+    }
+
+    implement_commands_workaround!(K: Send);
+
+    macro_rules! implement_commands {
+        ($tyargs:ident : $ty:ident) => {
+            #[async_trait]
+            pub trait AsyncCommands2: Sized {
+                async fn f<$tyargs: $ty>(&mut self, x: $tyargs) {
+                    self.f(x).await
+                }
+            }
+        };
+    }
+
+    implement_commands!(K: Send);
+}
+
+// https://github.com/dtolnay/async-trait/issues/53
+pub mod issue53 {
+    use async_trait::async_trait;
+
+    pub struct Unit;
+    pub struct Tuple(u8);
+    pub struct Struct {
+        pub x: u8,
+    }
+
+    #[async_trait]
+    pub trait Trait {
+        async fn method();
+    }
+
+    #[async_trait]
+    impl Trait for Unit {
+        async fn method() {
+            let _ = Self;
+        }
+    }
+
+    #[async_trait]
+    impl Trait for Tuple {
+        async fn method() {
+            let _ = Self(0);
+        }
+    }
+
+    #[async_trait]
+    impl Trait for Struct {
+        async fn method() {
+            let _ = Self { x: 0 };
+        }
+    }
+
+    #[async_trait]
+    impl Trait for std::marker::PhantomData<Struct> {
+        async fn method() {
+            let _ = Self;
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/57
+#[cfg(async_trait_nightly_testing)]
+pub mod issue57 {
+    use crate::executor;
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Trait {
+        async fn const_generic<T: Send, const C: usize>(_: [T; C]) {}
+    }
+
+    struct Struct;
+
+    #[async_trait]
+    impl Trait for Struct {
+        async fn const_generic<T: Send, const C: usize>(_: [T; C]) {}
+    }
+
+    #[test]
+    fn test() {
+        let fut = Struct::const_generic([0; 10]);
+        executor::block_on_simple(fut);
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/68
+pub mod issue68 {
+    #[rustversion::since(1.40)] // procedural macros cannot expand to macro definitions in 1.39.
+    #[async_trait::async_trait]
+    pub trait Example {
+        async fn method(&self) {
+            macro_rules! t {
+                () => {{
+                    let _: &Self = self;
+                }};
+            }
+            t!();
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/73
+pub mod issue73 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Example {
+        const ASSOCIATED: &'static str;
+
+        async fn associated(&self) {
+            println!("Associated:{}", Self::ASSOCIATED);
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/81
+pub mod issue81 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Trait {
+        async fn handle(&self);
+    }
+
+    pub enum Enum {
+        Variant,
+    }
+
+    #[async_trait]
+    impl Trait for Enum {
+        async fn handle(&self) {
+            let Enum::Variant = self;
+            let Self::Variant = self;
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/83
+pub mod issue83 {
+    #![allow(clippy::needless_arbitrary_self_type)]
+
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Trait {
+        async fn f(&self) {}
+        async fn g(self: &Self) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/85
+pub mod issue85 {
+    #![deny(non_snake_case)]
+
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Trait {
+        #[allow(non_snake_case)]
+        async fn camelCase();
+    }
+
+    pub struct Struct;
+
+    #[async_trait]
+    impl Trait for Struct {
+        async fn camelCase() {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/87
+pub mod issue87 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Trait {
+        async fn f(&self);
+    }
+
+    pub enum Tuple {
+        V(),
+    }
+
+    pub enum Struct {
+        V {},
+    }
+
+    #[async_trait]
+    impl Trait for Tuple {
+        async fn f(&self) {
+            let Tuple::V() = self;
+            let Self::V() = self;
+            let _ = Self::V;
+            let _ = Self::V();
+        }
+    }
+
+    #[async_trait]
+    impl Trait for Struct {
+        async fn f(&self) {
+            let Struct::V {} = self;
+            let Self::V {} = self;
+            let _ = Self::V {};
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/89
+pub mod issue89 {
+    #![allow(bare_trait_objects)]
+
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Trait {
+        async fn f(&self);
+    }
+
+    #[async_trait]
+    impl Trait for Send + Sync {
+        async fn f(&self) {}
+    }
+
+    #[async_trait]
+    impl Trait for dyn Fn(i8) + Send + Sync {
+        async fn f(&self) {}
+    }
+
+    #[async_trait]
+    impl Trait for (dyn Fn(u8) + Send + Sync) {
+        async fn f(&self) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/92
+pub mod issue92 {
+    use async_trait::async_trait;
+
+    macro_rules! mac {
+        ($($tt:tt)*) => {
+            $($tt)*
+        };
+    }
+
+    pub struct Struct<T> {
+        _x: T,
+    }
+
+    impl<T> Struct<T> {
+        const ASSOCIATED1: &'static str = "1";
+        async fn associated1() {}
+    }
+
+    #[async_trait]
+    pub trait Trait
+    where
+        mac!(Self): Send,
+    {
+        const ASSOCIATED2: &'static str;
+        type Associated2;
+
+        #[allow(path_statements, clippy::let_underscore_future, clippy::no_effect)]
+        async fn associated2(&self) {
+            // trait items
+            mac!(let _: Self::Associated2;);
+            mac!(let _: <Self>::Associated2;);
+            mac!(let _: <Self as Trait>::Associated2;);
+            mac!(Self::ASSOCIATED2;);
+            mac!(<Self>::ASSOCIATED2;);
+            mac!(<Self as Trait>::ASSOCIATED2;);
+            mac!(let _ = Self::associated2(self););
+            mac!(let _ = <Self>::associated2(self););
+            mac!(let _ = <Self as Trait>::associated2(self););
+        }
+    }
+
+    #[async_trait]
+    impl<T: Send + Sync> Trait for Struct<T>
+    where
+        mac!(Self): Send,
+    {
+        const ASSOCIATED2: &'static str = "2";
+        type Associated2 = ();
+
+        #[allow(path_statements, clippy::let_underscore_future, clippy::no_effect)]
+        async fn associated2(&self) {
+            // inherent items
+            mac!(Self::ASSOCIATED1;);
+            mac!(<Self>::ASSOCIATED1;);
+            mac!(let _ = Self::associated1(););
+            mac!(let _ = <Self>::associated1(););
+
+            // trait items
+            mac!(let _: <Self as Trait>::Associated2;);
+            mac!(Self::ASSOCIATED2;);
+            mac!(<Self>::ASSOCIATED2;);
+            mac!(<Self as Trait>::ASSOCIATED2;);
+            mac!(let _ = Self::associated2(self););
+            mac!(let _ = <Self>::associated2(self););
+            mac!(let _ = <Self as Trait>::associated2(self););
+        }
+    }
+
+    pub struct Unit;
+
+    #[async_trait]
+    impl Trait for Unit {
+        const ASSOCIATED2: &'static str = "2";
+        type Associated2 = ();
+
+        async fn associated2(&self) {
+            mac!(let Self: Self = *self;);
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/92#issuecomment-683370136
+pub mod issue92_2 {
+    use async_trait::async_trait;
+
+    macro_rules! mac {
+        ($($tt:tt)*) => {
+            $($tt)*
+        };
+    }
+
+    pub trait Trait1 {
+        fn func1();
+    }
+
+    #[async_trait]
+    pub trait Trait2: Trait1 {
+        async fn func2() {
+            mac!(Self::func1());
+
+            macro_rules! mac2 {
+                ($($tt:tt)*) => {
+                    Self::func1();
+                };
+            }
+            mac2!();
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/104
+pub mod issue104 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait T1 {
+        async fn id(&self) -> i32;
+    }
+
+    macro_rules! impl_t1 {
+        ($ty:ty, $id:expr) => {
+            #[async_trait]
+            impl T1 for $ty {
+                async fn id(&self) -> i32 {
+                    $id
+                }
+            }
+        };
+    }
+
+    struct Foo;
+
+    impl_t1!(Foo, 1);
+}
+
+// https://github.com/dtolnay/async-trait/issues/106
+pub mod issue106 {
+    use async_trait::async_trait;
+    use std::future::Future;
+
+    #[async_trait]
+    pub trait ProcessPool: Send + Sync {
+        type ThreadPool;
+
+        async fn spawn<F, Fut, T>(&self, work: F) -> T
+        where
+            F: FnOnce(&Self::ThreadPool) -> Fut + Send,
+            Fut: Future<Output = T> + 'static;
+    }
+
+    #[async_trait]
+    impl<P> ProcessPool for &P
+    where
+        P: ?Sized + ProcessPool,
+    {
+        type ThreadPool = P::ThreadPool;
+
+        async fn spawn<F, Fut, T>(&self, work: F) -> T
+        where
+            F: FnOnce(&Self::ThreadPool) -> Fut + Send,
+            Fut: Future<Output = T> + 'static,
+        {
+            (**self).spawn(work).await
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/110
+pub mod issue110 {
+    use async_trait::async_trait;
+    use std::marker::PhantomData;
+
+    #[async_trait]
+    pub trait Loader {
+        async fn load(&self, key: &str);
+    }
+
+    pub struct AwsEc2MetadataLoader<'a> {
+        marker: PhantomData<&'a ()>,
+    }
+
+    #[async_trait]
+    impl Loader for AwsEc2MetadataLoader<'_> {
+        async fn load(&self, _key: &str) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/120
+pub mod issue120 {
+    #![deny(clippy::trivially_copy_pass_by_ref)]
+
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Trait {
+        async fn f(&self);
+    }
+
+    #[async_trait]
+    impl Trait for () {
+        async fn f(&self) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/123
+pub mod issue123 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Trait<T = ()> {
+        async fn f(&self) -> &str
+        where
+            T: 'async_trait,
+        {
+            "default"
+        }
+    }
+
+    #[async_trait]
+    impl<T> Trait<T> for () {}
+}
+
+// https://github.com/dtolnay/async-trait/issues/129
+pub mod issue129 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait TestTrait {
+        async fn a(_b: u8, c: u8) -> u8 {
+            c
+        }
+    }
+
+    pub struct TestStruct;
+
+    #[async_trait]
+    impl TestTrait for TestStruct {
+        async fn a(_b: u8, c: u8) -> u8 {
+            c
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/134
+#[cfg(async_trait_nightly_testing)]
+pub mod issue134 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait TestTrait {
+        async fn run<const DUMMY: bool>(self)
+        where
+            Self: Sized,
+        {
+        }
+    }
+
+    pub struct TestStruct;
+
+    #[async_trait]
+    impl TestTrait for TestStruct {
+        async fn run<const DUMMY: bool>(self)
+        where
+            Self: Sized,
+        {
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/pull/125#pullrequestreview-491880881
+pub mod drop_order {
+    use crate::executor;
+    use async_trait::async_trait;
+    use std::sync::atomic::{AtomicBool, Ordering};
+
+    struct Flagger<'a>(&'a AtomicBool);
+
+    impl Drop for Flagger<'_> {
+        fn drop(&mut self) {
+            self.0.fetch_xor(true, Ordering::AcqRel);
+        }
+    }
+
+    #[async_trait]
+    trait Trait {
+        async fn async_trait(_: Flagger<'_>, flag: &AtomicBool);
+    }
+
+    struct Struct;
+
+    #[async_trait]
+    impl Trait for Struct {
+        async fn async_trait(_: Flagger<'_>, flag: &AtomicBool) {
+            flag.fetch_or(true, Ordering::AcqRel);
+        }
+    }
+
+    async fn standalone(_: Flagger<'_>, flag: &AtomicBool) {
+        flag.fetch_or(true, Ordering::AcqRel);
+    }
+
+    #[async_trait]
+    trait SelfTrait {
+        async fn async_trait(self, flag: &AtomicBool);
+    }
+
+    #[async_trait]
+    impl SelfTrait for Flagger<'_> {
+        async fn async_trait(self, flag: &AtomicBool) {
+            flag.fetch_or(true, Ordering::AcqRel);
+        }
+    }
+
+    #[test]
+    fn test_drop_order() {
+        // 0 : 0 ^ 1 = 1 | 1 = 1 (if flagger then block)
+        // 0 : 0 | 1 = 1 ^ 1 = 0 (if block then flagger)
+
+        let flag = AtomicBool::new(false);
+        executor::block_on_simple(standalone(Flagger(&flag), &flag));
+        assert!(!flag.load(Ordering::Acquire));
+
+        executor::block_on_simple(Struct::async_trait(Flagger(&flag), &flag));
+        assert!(!flag.load(Ordering::Acquire));
+
+        executor::block_on_simple(Flagger(&flag).async_trait(&flag));
+        assert!(!flag.load(Ordering::Acquire));
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/145
+pub mod issue145 {
+    #![deny(clippy::type_complexity)]
+
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait ManageConnection: Sized + Send + Sync + 'static {
+        type Connection: Send + 'static;
+        type Error: Send + 'static;
+
+        async fn connect(&self) -> Result<Self::Connection, Self::Error>;
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/147
+pub mod issue147 {
+    #![deny(clippy::let_unit_value)]
+
+    use async_trait::async_trait;
+
+    pub struct MyType;
+
+    #[async_trait]
+    pub trait MyTrait {
+        async fn x();
+        async fn y() -> ();
+        async fn z();
+    }
+
+    #[async_trait]
+    impl MyTrait for MyType {
+        async fn x() {}
+        async fn y() -> () {}
+        async fn z() {
+            unimplemented!()
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/149
+pub mod issue149 {
+    use async_trait::async_trait;
+
+    pub struct Thing;
+    pub trait Ret {}
+    impl Ret for Thing {}
+
+    pub async fn ok() -> &'static dyn Ret {
+        return &Thing;
+    }
+
+    #[async_trait]
+    pub trait Trait {
+        async fn fail() -> &'static dyn Ret {
+            return &Thing;
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/152
+#[cfg(async_trait_nightly_testing)]
+pub mod issue152 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Trait {
+        type Assoc;
+
+        async fn f(&self) -> Self::Assoc;
+    }
+
+    struct Struct;
+
+    #[async_trait]
+    impl Trait for Struct {
+        type Assoc = impl Sized;
+
+        async fn f(&self) -> Self::Assoc {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/154
+pub mod issue154 {
+    #![deny(clippy::items_after_statements)]
+
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait MyTrait {
+        async fn f(&self);
+    }
+
+    pub struct Struct;
+
+    #[async_trait]
+    impl MyTrait for Struct {
+        async fn f(&self) {
+            const MAX: u16 = 128;
+            println!("{}", MAX);
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/158
+pub mod issue158 {
+    use async_trait::async_trait;
+
+    fn f() {}
+
+    #[async_trait]
+    pub trait Trait {
+        async fn f(&self) {
+            self::f();
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/161
+#[allow(clippy::mut_mut)]
+pub mod issue161 {
+    use async_trait::async_trait;
+    use futures::future::FutureExt;
+    use std::sync::Arc;
+
+    #[async_trait]
+    pub trait Trait {
+        async fn f(self: Arc<Self>);
+    }
+
+    pub struct MyStruct(bool);
+
+    #[async_trait]
+    impl Trait for MyStruct {
+        async fn f(self: Arc<Self>) {
+            futures::select! {
+                _ = async {
+                    println!("{}", self.0);
+                }.fuse() => {}
+            }
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/169
+#[deny(where_clauses_object_safety)]
+pub mod issue169 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Trait: ::core::marker::Sync {
+        async fn f(&self) {}
+    }
+
+    pub fn test(_t: &dyn Trait) {}
+}
+
+// https://github.com/dtolnay/async-trait/issues/177
+pub mod issue177 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Trait {
+        async fn foo(&self, _callback: impl FnMut(&str) + Send) {}
+    }
+
+    pub struct Struct;
+
+    #[async_trait]
+    impl Trait for Struct {
+        async fn foo(&self, _callback: impl FnMut(&str) + Send) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/183
+pub mod issue183 {
+    #![deny(clippy::shadow_same)]
+
+    use async_trait::async_trait;
+
+    #[async_trait]
+    trait Foo {
+        async fn foo(_n: i32) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/199
+pub mod issue199 {
+    use async_trait::async_trait;
+    use std::cell::Cell;
+
+    struct IncrementOnDrop<'a>(&'a Cell<usize>);
+
+    impl<'a> Drop for IncrementOnDrop<'a> {
+        fn drop(&mut self) {
+            self.0.set(self.0.get() + 1);
+        }
+    }
+
+    #[async_trait(?Send)]
+    trait Trait {
+        async fn f(counter: &Cell<usize>, arg: IncrementOnDrop<'_>);
+    }
+
+    struct Struct;
+
+    #[async_trait(?Send)]
+    impl Trait for Struct {
+        async fn f(counter: &Cell<usize>, _: IncrementOnDrop<'_>) {
+            assert_eq!(counter.get(), 0); // second arg not dropped yet
+        }
+    }
+
+    #[test]
+    fn test() {
+        let counter = Cell::new(0);
+        let future = Struct::f(&counter, IncrementOnDrop(&counter));
+        assert_eq!(counter.get(), 0);
+        drop(future);
+        assert_eq!(counter.get(), 1);
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/204
+pub mod issue204 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Trait {
+        async fn f(arg: &impl Trait);
+        async fn g(arg: *const impl Trait);
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/210
+pub mod issue210 {
+    use async_trait::async_trait;
+    use std::sync::Arc;
+
+    #[async_trait]
+    pub trait Trait {
+        async fn f(self: Arc<Self>) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/226
+pub mod issue226 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Trait {
+        async fn cfg_param(&self, param: u8);
+        async fn cfg_param_wildcard(&self, _: u8);
+        async fn cfg_param_tuple(&self, (left, right): (u8, u8));
+    }
+
+    struct Struct;
+
+    #[async_trait]
+    impl Trait for Struct {
+        async fn cfg_param(&self, #[cfg(any())] param: u8, #[cfg(all())] _unused: u8) {}
+
+        async fn cfg_param_wildcard(&self, #[cfg(any())] _: u8, #[cfg(all())] _: u8) {}
+
+        async fn cfg_param_tuple(
+            &self,
+            #[cfg(any())] (left, right): (u8, u8),
+            #[cfg(all())] (_left, _right): (u8, u8),
+        ) {
+        }
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/232
+pub mod issue232 {
+    use async_trait::async_trait;
+
+    #[async_trait]
+    pub trait Generic<T> {
+        async fn take_ref(&self, thing: &T);
+    }
+
+    pub struct One;
+
+    #[async_trait]
+    impl<T> Generic<T> for One {
+        async fn take_ref(&self, _: &T) {}
+    }
+
+    pub struct Two;
+
+    #[async_trait]
+    impl<T: Sync> Generic<(T, T)> for Two {
+        async fn take_ref(&self, (a, b): &(T, T)) {
+            let _ = a;
+            let _ = b;
+        }
+    }
+
+    pub struct Three;
+
+    #[async_trait]
+    impl<T> Generic<(T, T, T)> for Three {
+        async fn take_ref(&self, (_a, _b, _c): &(T, T, T)) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/234
+pub mod issue234 {
+    use async_trait::async_trait;
+
+    pub struct Droppable;
+
+    impl Drop for Droppable {
+        fn drop(&mut self) {}
+    }
+
+    pub struct Tuple<T, U>(T, U);
+
+    #[async_trait]
+    pub trait Trait {
+        async fn f(arg: Tuple<Droppable, i32>);
+    }
+
+    pub struct UnderscorePattern;
+
+    #[async_trait]
+    impl Trait for UnderscorePattern {
+        async fn f(Tuple(_, _int): Tuple<Droppable, i32>) {}
+    }
+
+    pub struct DotDotPattern;
+
+    #[async_trait]
+    impl Trait for DotDotPattern {
+        async fn f(Tuple { 1: _int, .. }: Tuple<Droppable, i32>) {}
+    }
+}
+
+// https://github.com/dtolnay/async-trait/issues/236
+pub mod issue236 {
+    #![deny(clippy::async_yields_async)]
+    #![allow(clippy::manual_async_fn)]
+
+    use async_trait::async_trait;
+    use std::future::{self, Future, Ready};
+
+    // Does not trigger the lint.
+    pub async fn async_fn() -> Ready<()> {
+        future::ready(())
+    }
+
+    #[allow(clippy::async_yields_async)]
+    pub fn impl_future_fn() -> impl Future<Output = Ready<()>> {
+        async { future::ready(()) }
+    }
+
+    // The async_trait attribute turns the former into the latter, so we make it
+    // put its own allow(async_yeilds_async) to remain consistent with async fn.
+    #[async_trait]
+    pub trait Trait {
+        async fn f() -> Ready<()> {
+            future::ready(())
+        }
+    }
+}