diff options
Diffstat (limited to 'src/test')
42 files changed, 774 insertions, 28 deletions
diff --git a/src/test/rustdoc/auxiliary/reexport-doc-aux.rs b/src/test/rustdoc/auxiliary/reexport-doc-aux.rs new file mode 100644 index 00000000000..3400717eba1 --- /dev/null +++ b/src/test/rustdoc/auxiliary/reexport-doc-aux.rs @@ -0,0 +1,5 @@ +pub struct Foo; + +impl Foo { + pub fn foo() {} +} diff --git a/src/test/rustdoc/reexport-doc.rs b/src/test/rustdoc/reexport-doc.rs new file mode 100644 index 00000000000..df2c889b4d5 --- /dev/null +++ b/src/test/rustdoc/reexport-doc.rs @@ -0,0 +1,8 @@ +// aux-build:reexport-doc-aux.rs + +extern crate reexport_doc_aux as dep; + +// @has 'reexport_doc/struct.Foo.html' +// @count - '//p' 'These are the docs for Foo.' 1 +/// These are the docs for Foo. +pub use dep::Foo; diff --git a/src/test/ui/associated-types/cache/project-fn-ret-invariant.oneuse.stderr b/src/test/ui/associated-types/cache/project-fn-ret-invariant.oneuse.stderr index cc156016212..77841780f62 100644 --- a/src/test/ui/associated-types/cache/project-fn-ret-invariant.oneuse.stderr +++ b/src/test/ui/associated-types/cache/project-fn-ret-invariant.oneuse.stderr @@ -15,19 +15,19 @@ LL | let a = bar(f, x); = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance error: lifetime may not live long enough - --> $DIR/project-fn-ret-invariant.rs:40:13 + --> $DIR/project-fn-ret-invariant.rs:42:13 | LL | fn baz<'a, 'b>(x: Type<'a>, y: Type<'b>) -> (Type<'a>, Type<'b>) { | -- -- lifetime `'b` defined here | | | lifetime `'a` defined here -LL | let f = foo; // <-- No consistent type can be inferred for `f` here. -LL | let a = bar(f, x); +... +LL | let b = bar(f, y); | ^^^^^^^^^ argument requires that `'b` must outlive `'a` | = help: consider adding the following bound: `'b: 'a` - = note: requirement occurs because of a function pointer to `foo` - = note: the function `foo` is invariant over the parameter `'a` + = note: requirement occurs because of the type `Type<'_>`, which makes the generic argument `'_` invariant + = note: the struct `Type<'a>` is invariant over the parameter `'a` = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance help: `'a` and `'b` must be the same: replace one with the other diff --git a/src/test/ui/associated-types/cache/project-fn-ret-invariant.rs b/src/test/ui/associated-types/cache/project-fn-ret-invariant.rs index 1075fd6e092..e043379133a 100644 --- a/src/test/ui/associated-types/cache/project-fn-ret-invariant.rs +++ b/src/test/ui/associated-types/cache/project-fn-ret-invariant.rs @@ -39,8 +39,8 @@ fn baz<'a, 'b>(x: Type<'a>, y: Type<'b>) -> (Type<'a>, Type<'b>) { let f = foo; // <-- No consistent type can be inferred for `f` here. let a = bar(f, x); //[oneuse]~^ ERROR lifetime may not live long enough - //[oneuse]~| ERROR lifetime may not live long enough let b = bar(f, y); + //[oneuse]~^ ERROR lifetime may not live long enough (a, b) } diff --git a/src/test/ui/async-await/in-trait/async-associated-types.rs b/src/test/ui/async-await/in-trait/async-associated-types.rs new file mode 100644 index 00000000000..a6f928f3b1b --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-associated-types.rs @@ -0,0 +1,24 @@ +// check-fail +// known-bug: #102682 +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +use std::fmt::Debug; + +trait MyTrait<'a, 'b, T> where Self: 'a, T: Debug + Sized + 'b { + type MyAssoc; + + async fn foo(&'a self, key: &'b T) -> Self::MyAssoc; +} + +impl<'a, 'b, T: Debug + Sized + 'b, U: 'a> MyTrait<'a, 'b, T> for U { + type MyAssoc = (&'a U, &'b T); + + async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + (self, key) + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-associated-types.stderr b/src/test/ui/async-await/in-trait/async-associated-types.stderr new file mode 100644 index 00000000000..0985150eee0 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-associated-types.stderr @@ -0,0 +1,57 @@ +error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'a` due to conflicting requirements + --> $DIR/async-associated-types.rs:19:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + | ^^^^^^^^^^^^^^ + | +note: first, the lifetime cannot outlive the lifetime `'a` as defined here... + --> $DIR/async-associated-types.rs:16:6 + | +LL | impl<'a, 'b, T: Debug + Sized + 'b, U: 'a> MyTrait<'a, 'b, T> for U { + | ^^ +note: ...so that the types are compatible + --> $DIR/async-associated-types.rs:19:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + | ^^^^^^^^^^^^^^ + = note: expected `(&'a U, &'b T)` + found `(&U, &T)` + = note: but, the lifetime must be valid for the static lifetime... +note: ...so that the types are compatible + --> $DIR/async-associated-types.rs:19:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + | ^^^^^^^^^^^^^^ + = note: expected `MyTrait<'static, 'static, T>` + found `MyTrait<'_, '_, T>` + +error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'b` due to conflicting requirements + --> $DIR/async-associated-types.rs:19:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + | ^^^^^^^^^^^^^^ + | +note: first, the lifetime cannot outlive the lifetime `'b` as defined here... + --> $DIR/async-associated-types.rs:16:10 + | +LL | impl<'a, 'b, T: Debug + Sized + 'b, U: 'a> MyTrait<'a, 'b, T> for U { + | ^^ +note: ...so that the types are compatible + --> $DIR/async-associated-types.rs:19:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + | ^^^^^^^^^^^^^^ + = note: expected `(&'a U, &'b T)` + found `(&U, &T)` + = note: but, the lifetime must be valid for the static lifetime... +note: ...so that the types are compatible + --> $DIR/async-associated-types.rs:19:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + | ^^^^^^^^^^^^^^ + = note: expected `MyTrait<'static, 'static, T>` + found `MyTrait<'_, '_, T>` + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0495`. diff --git a/src/test/ui/async-await/in-trait/async-associated-types2.rs b/src/test/ui/async-await/in-trait/async-associated-types2.rs new file mode 100644 index 00000000000..e546a0579c6 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-associated-types2.rs @@ -0,0 +1,30 @@ +// check-pass +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![feature(type_alias_impl_trait)] +#![allow(incomplete_features)] + +use std::future::Future; + +trait MyTrait { + type Fut<'a>: Future<Output = i32> + where + Self: 'a; + + fn foo<'a>(&'a self) -> Self::Fut<'a>; +} + +impl MyTrait for i32 { + type Fut<'a> = impl Future<Output = i32> + 'a + where + Self: 'a; + + fn foo<'a>(&'a self) -> Self::Fut<'a> { + async { + *self + } + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-example-desugared-boxed-in-trait.rs b/src/test/ui/async-await/in-trait/async-example-desugared-boxed-in-trait.rs new file mode 100644 index 00000000000..38ba297189c --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-example-desugared-boxed-in-trait.rs @@ -0,0 +1,21 @@ +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![feature(return_position_impl_trait_in_trait)] +#![allow(incomplete_features)] + +use std::future::Future; +use std::pin::Pin; + +trait MyTrait { + fn foo(&self) -> Pin<Box<dyn Future<Output = i32> + '_>>; +} + +impl MyTrait for i32 { + async fn foo(&self) -> i32 { + //~^ ERROR method `foo` has an incompatible type for trait + *self + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-example-desugared-boxed-in-trait.stderr b/src/test/ui/async-await/in-trait/async-example-desugared-boxed-in-trait.stderr new file mode 100644 index 00000000000..22d2928f2f5 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-example-desugared-boxed-in-trait.stderr @@ -0,0 +1,17 @@ +error[E0053]: method `foo` has an incompatible type for trait + --> $DIR/async-example-desugared-boxed-in-trait.rs:15:28 + | +LL | async fn foo(&self) -> i32 { + | ^^^ expected struct `Pin`, found opaque type + | +note: type in trait + --> $DIR/async-example-desugared-boxed-in-trait.rs:11:22 + | +LL | fn foo(&self) -> Pin<Box<dyn Future<Output = i32> + '_>>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: expected fn pointer `fn(&i32) -> Pin<Box<dyn Future<Output = i32>>>` + found fn pointer `fn(&i32) -> impl Future<Output = i32>` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0053`. diff --git a/src/test/ui/async-await/in-trait/async-example-desugared-boxed.rs b/src/test/ui/async-await/in-trait/async-example-desugared-boxed.rs new file mode 100644 index 00000000000..61d7e2520ea --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-example-desugared-boxed.rs @@ -0,0 +1,24 @@ +// check-pass +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![feature(return_position_impl_trait_in_trait)] +#![allow(incomplete_features)] + +use std::future::Future; +use std::pin::Pin; + +trait MyTrait { + async fn foo(&self) -> i32; +} + +impl MyTrait for i32 { + // This will break once a PR that implements #102745 is merged + fn foo(&self) -> Pin<Box<dyn Future<Output = i32> + '_>> { + Box::pin(async { + *self + }) + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-example-desugared-in-trait.rs b/src/test/ui/async-await/in-trait/async-example-desugared-in-trait.rs new file mode 100644 index 00000000000..feeda719e03 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-example-desugared-in-trait.rs @@ -0,0 +1,21 @@ +// check-pass +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![feature(return_position_impl_trait_in_trait)] +#![allow(incomplete_features)] + +use std::future::Future; + +trait MyTrait { + fn foo(&self) -> impl Future<Output = i32> + '_; +} + +impl MyTrait for i32 { + // This will break once a PR that implements #102745 is merged + async fn foo(&self) -> i32 { + *self + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-example-desugared.rs b/src/test/ui/async-await/in-trait/async-example-desugared.rs new file mode 100644 index 00000000000..1313c9edd86 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-example-desugared.rs @@ -0,0 +1,23 @@ +// check-pass +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![feature(return_position_impl_trait_in_trait)] +#![allow(incomplete_features)] + +use std::future::Future; + +trait MyTrait { + async fn foo(&self) -> i32; +} + +impl MyTrait for i32 { + // This will break once a PR that implements #102745 is merged + fn foo(&self) -> impl Future<Output = i32> + '_ { + async { + *self + } + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-example.rs b/src/test/ui/async-await/in-trait/async-example.rs new file mode 100644 index 00000000000..abf94ef7450 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-example.rs @@ -0,0 +1,32 @@ +// check-pass +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +trait MyTrait { + async fn foo(&self) -> i32; + async fn bar(&self) -> i32; +} + +impl MyTrait for i32 { + async fn foo(&self) -> i32 { + *self + } + + async fn bar(&self) -> i32 { + self.foo().await + } +} + +fn main() { + let x = 5; + // Calling from non-async context + let _ = x.foo(); + let _ = x.bar(); + // Calling from async block in non-async context + async { + let _: i32 = x.foo().await; + let _: i32 = x.bar().await; + }; +} diff --git a/src/test/ui/async-await/in-trait/async-generics-and-bounds.rs b/src/test/ui/async-await/in-trait/async-generics-and-bounds.rs new file mode 100644 index 00000000000..a73d55adfec --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-generics-and-bounds.rs @@ -0,0 +1,21 @@ +// check-fail +// known-bug: #102682 +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +use std::fmt::Debug; +use std::hash::Hash; + +trait MyTrait<T, U> { + async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; +} + +impl<T, U> MyTrait<T, U> for (T, U) { + async fn foo(&self) -> &(T, U) { + self + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-generics-and-bounds.stderr b/src/test/ui/async-await/in-trait/async-generics-and-bounds.stderr new file mode 100644 index 00000000000..5c8d64fc6cb --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-generics-and-bounds.stderr @@ -0,0 +1,37 @@ +error[E0311]: the parameter type `U` may not live long enough + --> $DIR/async-generics-and-bounds.rs:12:28 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^^^ + | +note: the parameter type `U` must be valid for the anonymous lifetime as defined here... + --> $DIR/async-generics-and-bounds.rs:12:18 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^ +note: ...so that the reference type `&(T, U)` does not outlive the data it points at + --> $DIR/async-generics-and-bounds.rs:12:28 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^^^ + +error[E0311]: the parameter type `T` may not live long enough + --> $DIR/async-generics-and-bounds.rs:12:28 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^^^ + | +note: the parameter type `T` must be valid for the anonymous lifetime as defined here... + --> $DIR/async-generics-and-bounds.rs:12:18 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^ +note: ...so that the reference type `&(T, U)` does not outlive the data it points at + --> $DIR/async-generics-and-bounds.rs:12:28 + | +LL | async fn foo(&self) -> &(T, U) where T: Debug + Sized, U: Hash; + | ^^^^^^^ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0311`. diff --git a/src/test/ui/async-await/in-trait/async-generics.rs b/src/test/ui/async-await/in-trait/async-generics.rs new file mode 100644 index 00000000000..67000e5770e --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-generics.rs @@ -0,0 +1,18 @@ +// check-fail +// known-bug: #102682 +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +trait MyTrait<T, U> { + async fn foo(&self) -> &(T, U); +} + +impl<T, U> MyTrait<T, U> for (T, U) { + async fn foo(&self) -> &(T, U) { + self + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-generics.stderr b/src/test/ui/async-await/in-trait/async-generics.stderr new file mode 100644 index 00000000000..6ae73d9e3a6 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-generics.stderr @@ -0,0 +1,37 @@ +error[E0311]: the parameter type `U` may not live long enough + --> $DIR/async-generics.rs:9:28 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^^^ + | +note: the parameter type `U` must be valid for the anonymous lifetime as defined here... + --> $DIR/async-generics.rs:9:18 + | +LL | async fn foo(&self) -> &(T, U); + | ^ +note: ...so that the reference type `&(T, U)` does not outlive the data it points at + --> $DIR/async-generics.rs:9:28 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^^^ + +error[E0311]: the parameter type `T` may not live long enough + --> $DIR/async-generics.rs:9:28 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^^^ + | +note: the parameter type `T` must be valid for the anonymous lifetime as defined here... + --> $DIR/async-generics.rs:9:18 + | +LL | async fn foo(&self) -> &(T, U); + | ^ +note: ...so that the reference type `&(T, U)` does not outlive the data it points at + --> $DIR/async-generics.rs:9:28 + | +LL | async fn foo(&self) -> &(T, U); + | ^^^^^^^ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0311`. diff --git a/src/test/ui/async-await/in-trait/async-lifetimes-and-bounds.rs b/src/test/ui/async-await/in-trait/async-lifetimes-and-bounds.rs new file mode 100644 index 00000000000..3f7448cecd1 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-lifetimes-and-bounds.rs @@ -0,0 +1,20 @@ +// check-fail +// known-bug: #102682 +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +use std::fmt::Debug; + +trait MyTrait<'a, 'b, T> { + async fn foo(&'a self, key: &'b T) -> (&'a Self, &'b T) where T: Debug + Sized; +} + +impl<'a, 'b, T, U> MyTrait<'a, 'b, T> for U { + async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + (self, key) + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-lifetimes-and-bounds.stderr b/src/test/ui/async-await/in-trait/async-lifetimes-and-bounds.stderr new file mode 100644 index 00000000000..0f024202743 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-lifetimes-and-bounds.stderr @@ -0,0 +1,23 @@ +error[E0309]: the parameter type `Self` may not live long enough + --> $DIR/async-lifetimes-and-bounds.rs:11:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a Self, &'b T) where T: Debug + Sized; + | ^^^^^^^^^^^^^^^^^ + | + = help: consider adding an explicit lifetime bound `Self: 'a`... + = note: ...so that the reference type `&'a Self` does not outlive the data it points at + +error[E0309]: the parameter type `T` may not live long enough + --> $DIR/async-lifetimes-and-bounds.rs:11:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a Self, &'b T) where T: Debug + Sized; + | ^^^^^^^^^^^^^^^^^ ...so that the reference type `&'b T` does not outlive the data it points at + | +help: consider adding an explicit lifetime bound... + | +LL | trait MyTrait<'a, 'b, T: 'b> { + | ++++ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0309`. diff --git a/src/test/ui/async-await/in-trait/async-lifetimes.rs b/src/test/ui/async-await/in-trait/async-lifetimes.rs new file mode 100644 index 00000000000..acbac471cf7 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-lifetimes.rs @@ -0,0 +1,18 @@ +// check-fail +// known-bug: #102682 +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +trait MyTrait<'a, 'b, T> { + async fn foo(&'a self, key: &'b T) -> (&'a Self, &'b T); +} + +impl<'a, 'b, T, U> MyTrait<'a, 'b, T> for U { + async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) { + (self, key) + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-lifetimes.stderr b/src/test/ui/async-await/in-trait/async-lifetimes.stderr new file mode 100644 index 00000000000..9a7d294bb17 --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-lifetimes.stderr @@ -0,0 +1,23 @@ +error[E0309]: the parameter type `Self` may not live long enough + --> $DIR/async-lifetimes.rs:9:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a Self, &'b T); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider adding an explicit lifetime bound `Self: 'a`... + = note: ...so that the reference type `&'a Self` does not outlive the data it points at + +error[E0309]: the parameter type `T` may not live long enough + --> $DIR/async-lifetimes.rs:9:43 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a Self, &'b T); + | ^^^^^^^^^^^^^^^^^ ...so that the reference type `&'b T` does not outlive the data it points at + | +help: consider adding an explicit lifetime bound... + | +LL | trait MyTrait<'a, 'b, T: 'b> { + | ++++ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0309`. diff --git a/src/test/ui/async-await/in-trait/async-recursive-generic.rs b/src/test/ui/async-await/in-trait/async-recursive-generic.rs new file mode 100644 index 00000000000..6839abd381c --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-recursive-generic.rs @@ -0,0 +1,21 @@ +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +trait MyTrait<T> { + async fn foo_recursive(&self, n: usize) -> T; +} + +impl<T> MyTrait<T> for T where T: Copy { + async fn foo_recursive(&self, n: usize) -> T { + //~^ ERROR recursion in an `async fn` requires boxing + if n > 0 { + self.foo_recursive(n - 1).await + } else { + *self + } + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-recursive-generic.stderr b/src/test/ui/async-await/in-trait/async-recursive-generic.stderr new file mode 100644 index 00000000000..cab173bdd5b --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-recursive-generic.stderr @@ -0,0 +1,12 @@ +error[E0733]: recursion in an `async fn` requires boxing + --> $DIR/async-recursive-generic.rs:11:48 + | +LL | async fn foo_recursive(&self, n: usize) -> T { + | ^ recursive `async fn` + | + = note: a recursive `async fn` must be rewritten to return a boxed `dyn Future` + = note: consider using the `async_recursion` crate: https://crates.io/crates/async_recursion + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0733`. diff --git a/src/test/ui/async-await/in-trait/async-recursive.rs b/src/test/ui/async-await/in-trait/async-recursive.rs new file mode 100644 index 00000000000..61119f8095b --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-recursive.rs @@ -0,0 +1,21 @@ +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +trait MyTrait { + async fn foo_recursive(&self, n: usize) -> i32; +} + +impl MyTrait for i32 { + async fn foo_recursive(&self, n: usize) -> i32 { + //~^ ERROR recursion in an `async fn` requires boxing + if n > 0 { + self.foo_recursive(n - 1).await + } else { + *self + } + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/async-recursive.stderr b/src/test/ui/async-await/in-trait/async-recursive.stderr new file mode 100644 index 00000000000..9feff37b3fe --- /dev/null +++ b/src/test/ui/async-await/in-trait/async-recursive.stderr @@ -0,0 +1,12 @@ +error[E0733]: recursion in an `async fn` requires boxing + --> $DIR/async-recursive.rs:11:48 + | +LL | async fn foo_recursive(&self, n: usize) -> i32 { + | ^^^ recursive `async fn` + | + = note: a recursive `async fn` must be rewritten to return a boxed `dyn Future` + = note: consider using the `async_recursion` crate: https://crates.io/crates/async_recursion + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0733`. diff --git a/src/test/ui/async-await/in-trait/fn-not-async-err.rs b/src/test/ui/async-await/in-trait/fn-not-async-err.rs new file mode 100644 index 00000000000..f94d32145a2 --- /dev/null +++ b/src/test/ui/async-await/in-trait/fn-not-async-err.rs @@ -0,0 +1,17 @@ +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +trait MyTrait { + async fn foo(&self) -> i32; +} + +impl MyTrait for i32 { + fn foo(&self) -> i32 { + //~^ ERROR: `i32` is not a future [E0277] + *self + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/fn-not-async-err.stderr b/src/test/ui/async-await/in-trait/fn-not-async-err.stderr new file mode 100644 index 00000000000..03321dc5b5a --- /dev/null +++ b/src/test/ui/async-await/in-trait/fn-not-async-err.stderr @@ -0,0 +1,17 @@ +error[E0277]: `i32` is not a future + --> $DIR/fn-not-async-err.rs:11:22 + | +LL | fn foo(&self) -> i32 { + | ^^^ `i32` is not a future + | + = help: the trait `Future` is not implemented for `i32` + = note: i32 must be a future or must implement `IntoFuture` to be awaited +note: required by a bound in `MyTrait::foo::{opaque#0}` + --> $DIR/fn-not-async-err.rs:7:28 + | +LL | async fn foo(&self) -> i32; + | ^^^ required by this bound in `MyTrait::foo::{opaque#0}` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/src/test/ui/async-await/in-trait/fn-not-async-err2.rs b/src/test/ui/async-await/in-trait/fn-not-async-err2.rs new file mode 100644 index 00000000000..594baa91ad8 --- /dev/null +++ b/src/test/ui/async-await/in-trait/fn-not-async-err2.rs @@ -0,0 +1,21 @@ +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +use std::future::Future; + +trait MyTrait { + async fn foo(&self) -> i32; +} + +impl MyTrait for i32 { + fn foo(&self) -> impl Future<Output = i32> { + //~^ ERROR `impl Trait` only allowed in function and inherent method return types, not in `impl` method return [E0562] + async { + *self + } + } +} + +fn main() {} diff --git a/src/test/ui/async-await/in-trait/fn-not-async-err2.stderr b/src/test/ui/async-await/in-trait/fn-not-async-err2.stderr new file mode 100644 index 00000000000..f591f184772 --- /dev/null +++ b/src/test/ui/async-await/in-trait/fn-not-async-err2.stderr @@ -0,0 +1,12 @@ +error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `impl` method return + --> $DIR/fn-not-async-err2.rs:13:22 + | +LL | fn foo(&self) -> impl Future<Output = i32> { + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = help: add `#![feature(return_position_impl_trait_in_trait)]` to the crate attributes to enable + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0562`. diff --git a/src/test/ui/async-await/issues/issue-72312.stderr b/src/test/ui/async-await/issues/issue-72312.stderr index 5e5a980adb9..aa947b69003 100644 --- a/src/test/ui/async-await/issues/issue-72312.stderr +++ b/src/test/ui/async-await/issues/issue-72312.stderr @@ -1,5 +1,5 @@ error[E0521]: borrowed data escapes outside of associated function - --> $DIR/issue-72312.rs:12:24 + --> $DIR/issue-72312.rs:12:9 | LL | pub async fn start(&self) { | ----- @@ -7,17 +7,16 @@ LL | pub async fn start(&self) { | `self` is a reference that is only valid in the associated function body | let's call the lifetime of this reference `'1` ... -LL | require_static(async move { - | ________________________^ +LL | / require_static(async move { LL | | LL | | LL | | LL | | &self; LL | | }); - | | ^ - | | | - | |_________`self` escapes the associated function body here - | argument requires that `'1` must outlive `'static` + | | ^ + | | | + | |__________`self` escapes the associated function body here + | argument requires that `'1` must outlive `'static` error: aborting due to previous error diff --git a/src/test/ui/borrowck/issue-103624.rs b/src/test/ui/borrowck/issue-103624.rs new file mode 100644 index 00000000000..f1fa95f9246 --- /dev/null +++ b/src/test/ui/borrowck/issue-103624.rs @@ -0,0 +1,31 @@ +// edition:2021 + +struct StructA { + b: StructB, +} + +async fn spawn_blocking<T>(f: impl (Fn() -> T) + Send + Sync + 'static) -> T { + todo!() +} + +impl StructA { + async fn foo(&self) { + let bar = self.b.bar().await; + spawn_blocking(move || { + //~^ ERROR borrowed data escapes outside of associated function + self.b; + //~^ ERROR cannot move out of `self.b`, as `self` is a captured variable in an `Fn` closure + }) + .await; + } +} + +struct StructB {} + +impl StructB { + async fn bar(&self) -> Option<u8> { + None + } +} + +fn main() {} diff --git a/src/test/ui/borrowck/issue-103624.stderr b/src/test/ui/borrowck/issue-103624.stderr new file mode 100644 index 00000000000..e6a35dd8801 --- /dev/null +++ b/src/test/ui/borrowck/issue-103624.stderr @@ -0,0 +1,35 @@ +error[E0507]: cannot move out of `self.b`, as `self` is a captured variable in an `Fn` closure + --> $DIR/issue-103624.rs:16:13 + | +LL | async fn foo(&self) { + | ----- captured outer variable +LL | let bar = self.b.bar().await; +LL | spawn_blocking(move || { + | ------- captured by this `Fn` closure +LL | +LL | self.b; + | ^^^^^^ move occurs because `self.b` has type `StructB`, which does not implement the `Copy` trait + +error[E0521]: borrowed data escapes outside of associated function + --> $DIR/issue-103624.rs:14:9 + | +LL | async fn foo(&self) { + | ----- + | | + | `self` is a reference that is only valid in the associated function body + | let's call the lifetime of this reference `'1` +LL | let bar = self.b.bar().await; +LL | / spawn_blocking(move || { +LL | | +LL | | self.b; +LL | | +LL | | }) + | | ^ + | | | + | |__________`self` escapes the associated function body here + | argument requires that `'1` must outlive `'static` + +error: aborting due to 2 previous errors + +Some errors have detailed explanations: E0507, E0521. +For more information about an error, try `rustc --explain E0507`. diff --git a/src/test/ui/coherence/coherence-default-trait-impl.stderr b/src/test/ui/coherence/coherence-default-trait-impl.stderr index b08ccb087d9..63201878272 100644 --- a/src/test/ui/coherence/coherence-default-trait-impl.stderr +++ b/src/test/ui/coherence/coherence-default-trait-impl.stderr @@ -3,12 +3,24 @@ error[E0199]: implementing the trait `MySafeTrait` is not unsafe | LL | unsafe impl MySafeTrait for Foo {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove `unsafe` from this trait implementation + | +LL - unsafe impl MySafeTrait for Foo {} +LL + impl MySafeTrait for Foo {} + | error[E0200]: the trait `MyUnsafeTrait` requires an `unsafe impl` declaration --> $DIR/coherence-default-trait-impl.rs:13:1 | LL | impl MyUnsafeTrait for Foo {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: the trait `MyUnsafeTrait` enforces invariants that the compiler can't check. Review the trait documentation and make sure this implementation upholds those invariants before adding the `unsafe` keyword +help: add `unsafe` to this trait implementation + | +LL | unsafe impl MyUnsafeTrait for Foo {} + | ++++++ error: aborting due to 2 previous errors diff --git a/src/test/ui/dropck/dropck-eyepatch-implies-unsafe-impl.stderr b/src/test/ui/dropck/dropck-eyepatch-implies-unsafe-impl.stderr index 49e55be1b49..82169ee01be 100644 --- a/src/test/ui/dropck/dropck-eyepatch-implies-unsafe-impl.stderr +++ b/src/test/ui/dropck/dropck-eyepatch-implies-unsafe-impl.stderr @@ -8,6 +8,12 @@ LL | | // (unsafe to access self.1 due to #[may_dangle] on A) LL | | fn drop(&mut self) { println!("drop {} {:?}", self.0, self.2); } LL | | } | |_^ + | + = note: the trait `Drop` enforces invariants that the compiler can't check. Review the trait documentation and make sure this implementation upholds those invariants before adding the `unsafe` keyword +help: add `unsafe` to this trait implementation + | +LL | unsafe impl<#[may_dangle] A, B: fmt::Debug> Drop for Pt<A, B> { + | ++++++ error[E0569]: requires an `unsafe impl` declaration due to `#[may_dangle]` attribute --> $DIR/dropck-eyepatch-implies-unsafe-impl.rs:27:1 @@ -19,6 +25,12 @@ LL | | // (unsafe to access self.1 due to #[may_dangle] on 'a) LL | | fn drop(&mut self) { println!("drop {} {:?}", self.0, self.2); } LL | | } | |_^ + | + = note: the trait `Drop` enforces invariants that the compiler can't check. Review the trait documentation and make sure this implementation upholds those invariants before adding the `unsafe` keyword +help: add `unsafe` to this trait implementation + | +LL | unsafe impl<#[may_dangle] 'a, 'b, B: fmt::Debug> Drop for Pr<'a, 'b, B> { + | ++++++ error: aborting due to 2 previous errors diff --git a/src/test/ui/error-codes/E0199.stderr b/src/test/ui/error-codes/E0199.stderr index 3632d26cd32..99d808c0d4b 100644 --- a/src/test/ui/error-codes/E0199.stderr +++ b/src/test/ui/error-codes/E0199.stderr @@ -3,6 +3,12 @@ error[E0199]: implementing the trait `Bar` is not unsafe | LL | unsafe impl Bar for Foo { } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove `unsafe` from this trait implementation + | +LL - unsafe impl Bar for Foo { } +LL + impl Bar for Foo { } + | error: aborting due to previous error diff --git a/src/test/ui/error-codes/E0200.stderr b/src/test/ui/error-codes/E0200.stderr index 677271aad44..1fd86aecee1 100644 --- a/src/test/ui/error-codes/E0200.stderr +++ b/src/test/ui/error-codes/E0200.stderr @@ -3,6 +3,12 @@ error[E0200]: the trait `Bar` requires an `unsafe impl` declaration | LL | impl Bar for Foo { } | ^^^^^^^^^^^^^^^^^^^^ + | + = note: the trait `Bar` enforces invariants that the compiler can't check. Review the trait documentation and make sure this implementation upholds those invariants before adding the `unsafe` keyword +help: add `unsafe` to this trait implementation + | +LL | unsafe impl Bar for Foo { } + | ++++++ error: aborting due to previous error diff --git a/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr b/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr index da4bc499c7e..01293379700 100644 --- a/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr +++ b/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr @@ -53,14 +53,15 @@ LL | fn case2() { error[E0597]: `a` does not live long enough --> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:30:26 | -LL | let cell = Cell::new(&a); - | ----------^^- - | | | - | | borrowed value does not live long enough - | argument requires that `a` is borrowed for `'static` +LL | let cell = Cell::new(&a); + | ^^ borrowed value does not live long enough ... -LL | } - | - `a` dropped here while still borrowed +LL | / foo(cell, |cell_a, cell_x| { +LL | | cell_x.set(cell_a.get()); // forces 'a: 'x, implies 'a = 'static -> borrow error +LL | | }) + | |______- argument requires that `a` is borrowed for `'static` +LL | } + | - `a` dropped here while still borrowed error: aborting due to 2 previous errors diff --git a/src/test/ui/nll/user-annotations/adt-nullary-enums.stderr b/src/test/ui/nll/user-annotations/adt-nullary-enums.stderr index bb703412228..3326fa521fc 100644 --- a/src/test/ui/nll/user-annotations/adt-nullary-enums.stderr +++ b/src/test/ui/nll/user-annotations/adt-nullary-enums.stderr @@ -1,14 +1,14 @@ error[E0597]: `c` does not live long enough --> $DIR/adt-nullary-enums.rs:33:41 | -LL | SomeEnum::SomeVariant(Cell::new(&c)), - | ----------^^- - | | | - | | borrowed value does not live long enough - | argument requires that `c` is borrowed for `'static` -... -LL | } - | - `c` dropped here while still borrowed +LL | / combine( +LL | | SomeEnum::SomeVariant(Cell::new(&c)), + | | ^^ borrowed value does not live long enough +LL | | SomeEnum::SomeOtherVariant::<Cell<&'static u32>>, +LL | | ); + | |_____- argument requires that `c` is borrowed for `'static` +LL | } + | - `c` dropped here while still borrowed error[E0597]: `c` does not live long enough --> $DIR/adt-nullary-enums.rs:41:41 diff --git a/src/test/ui/suggestions/issue-102354.rs b/src/test/ui/suggestions/issue-102354.rs new file mode 100644 index 00000000000..f881feb0060 --- /dev/null +++ b/src/test/ui/suggestions/issue-102354.rs @@ -0,0 +1,10 @@ +trait Trait { + fn func() {} +} + +impl Trait for i32 {} + +fn main() { + let x: i32 = 123; + x.func(); //~ERROR no method +} diff --git a/src/test/ui/suggestions/issue-102354.stderr b/src/test/ui/suggestions/issue-102354.stderr new file mode 100644 index 00000000000..4f76c5f2e75 --- /dev/null +++ b/src/test/ui/suggestions/issue-102354.stderr @@ -0,0 +1,24 @@ +error[E0599]: no method named `func` found for type `i32` in the current scope + --> $DIR/issue-102354.rs:9:7 + | +LL | x.func(); + | ^^^^ this is an associated function, not a method + | + = note: found the following associated functions; to be used as methods, functions must have a `self` parameter +note: the candidate is defined in the trait `Trait` + --> $DIR/issue-102354.rs:2:5 + | +LL | fn func() {} + | ^^^^^^^^^ +help: use associated function syntax instead + | +LL | i32::func(); + | ~~~~~~~~~ +help: disambiguate the associated function for the candidate + | +LL | <i32 as Trait>::func(x); + | ~~~~~~~~~~~~~~~~~~~~~~~ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0599`. diff --git a/src/test/ui/traits/safety-trait-impl-cc.stderr b/src/test/ui/traits/safety-trait-impl-cc.stderr index 5a0f8d3b8ca..0b1fb30478f 100644 --- a/src/test/ui/traits/safety-trait-impl-cc.stderr +++ b/src/test/ui/traits/safety-trait-impl-cc.stderr @@ -7,6 +7,12 @@ LL | | panic!(); LL | | } LL | | } | |_^ + | + = note: the trait `Foo` enforces invariants that the compiler can't check. Review the trait documentation and make sure this implementation upholds those invariants before adding the `unsafe` keyword +help: add `unsafe` to this trait implementation + | +LL | unsafe impl lib::Foo for Bar { + | ++++++ error: aborting due to previous error diff --git a/src/test/ui/traits/safety-trait-impl.stderr b/src/test/ui/traits/safety-trait-impl.stderr index fc0f6c69308..721e2b48b95 100644 --- a/src/test/ui/traits/safety-trait-impl.stderr +++ b/src/test/ui/traits/safety-trait-impl.stderr @@ -3,12 +3,24 @@ error[E0200]: the trait `UnsafeTrait` requires an `unsafe impl` declaration | LL | impl UnsafeTrait for u16 { } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: the trait `UnsafeTrait` enforces invariants that the compiler can't check. Review the trait documentation and make sure this implementation upholds those invariants before adding the `unsafe` keyword +help: add `unsafe` to this trait implementation + | +LL | unsafe impl UnsafeTrait for u16 { } + | ++++++ error[E0199]: implementing the trait `SafeTrait` is not unsafe --> $DIR/safety-trait-impl.rs:16:1 | LL | unsafe impl SafeTrait for u32 { } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: remove `unsafe` from this trait implementation + | +LL - unsafe impl SafeTrait for u32 { } +LL + impl SafeTrait for u32 { } + | error: aborting due to 2 previous errors |