diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:41 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:41 +0000 |
| commit | 4f9fe856a25ab29345b90e7725509e9ee38a37be (patch) | |
| tree | e4ffd8a9374cae7b21f7cbfb352927e0e074aff6 /tests/ui/traits | |
| parent | Adding upstream version 1.68.2+dfsg1. (diff) | |
| download | rustc-upstream/1.69.0+dfsg1.tar.xz rustc-upstream/1.69.0+dfsg1.zip | |
Adding upstream version 1.69.0+dfsg1.upstream/1.69.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/traits')
87 files changed, 1375 insertions, 91 deletions
diff --git a/tests/ui/traits/alias/ambiguous.stderr b/tests/ui/traits/alias/ambiguous.stderr index 0fe1a7967..203bdc526 100644 --- a/tests/ui/traits/alias/ambiguous.stderr +++ b/tests/ui/traits/alias/ambiguous.stderr @@ -14,11 +14,11 @@ note: candidate #2 is defined in an impl of the trait `B` for the type `u8` | LL | fn foo(&self) {} | ^^^^^^^^^^^^^ -help: disambiguate the associated function for candidate #1 +help: disambiguate the method for candidate #1 | LL | A::foo(&t); | ~~~~~~~~~~ -help: disambiguate the associated function for candidate #2 +help: disambiguate the method for candidate #2 | LL | B::foo(&t); | ~~~~~~~~~~ diff --git a/tests/ui/traits/alias/issue-107747-do-not-assemble-supertraits.rs b/tests/ui/traits/alias/issue-107747-do-not-assemble-supertraits.rs new file mode 100644 index 000000000..9b41a8096 --- /dev/null +++ b/tests/ui/traits/alias/issue-107747-do-not-assemble-supertraits.rs @@ -0,0 +1,21 @@ +// Regression test for #107747: methods from trait alias supertraits were brought into scope +// +// check-pass + +#![feature(trait_alias)] + +use std::fmt; + +trait Foo: fmt::Debug {} +trait Bar = Foo; + +#[derive(Debug)] +struct Qux(bool); + +impl fmt::Display for Qux { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + self.0.fmt(f) + } +} + +fn main() {} diff --git a/tests/ui/traits/alias/issue-108072-unmet-trait-alias-bound.rs b/tests/ui/traits/alias/issue-108072-unmet-trait-alias-bound.rs new file mode 100644 index 000000000..d254c0ae3 --- /dev/null +++ b/tests/ui/traits/alias/issue-108072-unmet-trait-alias-bound.rs @@ -0,0 +1,11 @@ +// Regression test for #108072: do not ICE upon unmet trait alias constraint + +#![feature(trait_alias)] + +trait IteratorAlias = Iterator; + +fn f(_: impl IteratorAlias) {} + +fn main() { + f(()) //~ `()` is not an iterator +} diff --git a/tests/ui/traits/alias/issue-108072-unmet-trait-alias-bound.stderr b/tests/ui/traits/alias/issue-108072-unmet-trait-alias-bound.stderr new file mode 100644 index 000000000..39f974f96 --- /dev/null +++ b/tests/ui/traits/alias/issue-108072-unmet-trait-alias-bound.stderr @@ -0,0 +1,19 @@ +error[E0277]: `()` is not an iterator + --> $DIR/issue-108072-unmet-trait-alias-bound.rs:10:7 + | +LL | f(()) + | - ^^ `()` is not an iterator + | | + | required by a bound introduced by this call + | + = help: the trait `Iterator` is not implemented for `()` + = note: required for `()` to implement `IteratorAlias` +note: required by a bound in `f` + --> $DIR/issue-108072-unmet-trait-alias-bound.rs:7:14 + | +LL | fn f(_: impl IteratorAlias) {} + | ^^^^^^^^^^^^^ required by this bound in `f` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/alias/issue-108132-unmet-trait-alias-bound-on-generic-impl.rs b/tests/ui/traits/alias/issue-108132-unmet-trait-alias-bound-on-generic-impl.rs new file mode 100644 index 000000000..0b1f9ab57 --- /dev/null +++ b/tests/ui/traits/alias/issue-108132-unmet-trait-alias-bound-on-generic-impl.rs @@ -0,0 +1,15 @@ +// Regression test for #108132: do not ICE upon unmet trait alias constraint in generic impl + +#![feature(trait_alias)] + +trait IteratorAlias = Iterator; + +struct Foo<I>(I); + +impl<I: IteratorAlias> Foo<I> { + fn f() {} +} + +fn main() { + Foo::<()>::f() //~ trait bounds were not satisfied +} diff --git a/tests/ui/traits/alias/issue-108132-unmet-trait-alias-bound-on-generic-impl.stderr b/tests/ui/traits/alias/issue-108132-unmet-trait-alias-bound-on-generic-impl.stderr new file mode 100644 index 000000000..f1b259d5a --- /dev/null +++ b/tests/ui/traits/alias/issue-108132-unmet-trait-alias-bound-on-generic-impl.stderr @@ -0,0 +1,25 @@ +error[E0599]: the function or associated item `f` exists for struct `Foo<()>`, but its trait bounds were not satisfied + --> $DIR/issue-108132-unmet-trait-alias-bound-on-generic-impl.rs:14:16 + | +LL | struct Foo<I>(I); + | ------------- function or associated item `f` not found for this struct +... +LL | Foo::<()>::f() + | ^ function or associated item cannot be called on `Foo<()>` due to unsatisfied trait bounds + | +note: trait bound `(): Iterator` was not satisfied + --> $DIR/issue-108132-unmet-trait-alias-bound-on-generic-impl.rs:5:23 + | +LL | trait IteratorAlias = Iterator; + | ------------- ^^^^^^^^ unsatisfied trait bound introduced here +note: trait bound `(): IteratorAlias` was not satisfied + --> $DIR/issue-108132-unmet-trait-alias-bound-on-generic-impl.rs:9:9 + | +LL | impl<I: IteratorAlias> Foo<I> { + | ^^^^^^^^^^^^^ ------ + | | + | unsatisfied trait bound introduced here + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0599`. diff --git a/tests/ui/traits/alias/issue-60755.rs b/tests/ui/traits/alias/issue-60755.rs new file mode 100644 index 000000000..6b955a752 --- /dev/null +++ b/tests/ui/traits/alias/issue-60755.rs @@ -0,0 +1,12 @@ +// check-pass + +#![feature(trait_alias)] + +struct MyStruct {} +trait MyFn = Fn(&MyStruct); + +fn foo(_: impl MyFn) {} + +fn main() { + foo(|_| {}); +} diff --git a/tests/ui/traits/alias/self-in-generics.rs b/tests/ui/traits/alias/self-in-generics.rs index 0bb6335f9..dcb33b7a9 100644 --- a/tests/ui/traits/alias/self-in-generics.rs +++ b/tests/ui/traits/alias/self-in-generics.rs @@ -1,9 +1,5 @@ // astconv uses `FreshTy(0)` as a dummy `Self` type when instanciating trait objects. // This `FreshTy(0)` can leak into substs, causing ICEs in several places. -// Using `save-analysis` triggers type-checking `f` that would be normally skipped -// as `type_of` emitted an error. -// -// compile-flags: -Zsave-analysis #![feature(trait_alias)] diff --git a/tests/ui/traits/alias/self-in-generics.stderr b/tests/ui/traits/alias/self-in-generics.stderr index 110d60e6e..80af4e5aa 100644 --- a/tests/ui/traits/alias/self-in-generics.stderr +++ b/tests/ui/traits/alias/self-in-generics.stderr @@ -1,5 +1,5 @@ error[E0038]: the trait alias `SelfInput` cannot be made into an object - --> $DIR/self-in-generics.rs:12:19 + --> $DIR/self-in-generics.rs:8:19 | LL | pub fn f(_f: &dyn SelfInput) {} | ^^^^^^^^^ diff --git a/tests/ui/traits/associated_type_bound/check-trait-object-bounds-3.stderr b/tests/ui/traits/associated_type_bound/check-trait-object-bounds-3.stderr index ade552c4b..c7af71a42 100644 --- a/tests/ui/traits/associated_type_bound/check-trait-object-bounds-3.stderr +++ b/tests/ui/traits/associated_type_bound/check-trait-object-bounds-3.stderr @@ -1,6 +1,8 @@ error[E0597]: `s` does not live long enough --> $DIR/check-trait-object-bounds-3.rs:15:34 | +LL | let s = String::from("abcdef"); + | - binding `s` declared here LL | z = f::<dyn X<Y = &str>>(&s); | ---------------------^^- | | | diff --git a/tests/ui/traits/coercion-generic-regions.stderr b/tests/ui/traits/coercion-generic-regions.stderr index 5cfb64901..ae70202ab 100644 --- a/tests/ui/traits/coercion-generic-regions.stderr +++ b/tests/ui/traits/coercion-generic-regions.stderr @@ -1,6 +1,8 @@ error[E0597]: `person` does not live long enough --> $DIR/coercion-generic-regions.rs:17:24 | +LL | let person = "Fred".to_string(); + | ------ binding `person` declared here LL | let person: &str = &person; | ^^^^^^^ | | diff --git a/tests/ui/traits/inductive-overflow/supertrait-auto-trait.stderr b/tests/ui/traits/inductive-overflow/supertrait-auto-trait.stderr index 3ec288d13..dc967d512 100644 --- a/tests/ui/traits/inductive-overflow/supertrait-auto-trait.stderr +++ b/tests/ui/traits/inductive-overflow/supertrait-auto-trait.stderr @@ -4,7 +4,7 @@ error[E0568]: auto traits cannot have super traits or lifetime bounds LL | auto trait Magic: Copy {} | -----^^^^^^ help: remove the super traits or lifetime bounds | | - | auto trait cannot have super traits or lifetime bounds + | auto traits cannot have super traits or lifetime bounds error[E0277]: the trait bound `NoClone: Copy` is not satisfied --> $DIR/supertrait-auto-trait.rs:16:23 diff --git a/tests/ui/traits/issue-103563.rs b/tests/ui/traits/issue-103563.rs new file mode 100644 index 000000000..cd3eea09b --- /dev/null +++ b/tests/ui/traits/issue-103563.rs @@ -0,0 +1,75 @@ +// build-pass + +fn main() { + let mut log_service = LogService { inner: Inner }; + log_service.call(()); +} + +pub trait Service<Request> { + type Response; + + fn call(&mut self, req: Request) -> Self::Response; +} + +pub struct LogService<S> { + inner: S, +} + +impl<T, U, S> Service<T> for LogService<S> +where + S: Service<T, Response = U>, + U: Extension + 'static, + for<'a> U::Item<'a>: std::fmt::Debug, +{ + type Response = S::Response; + + fn call(&mut self, req: T) -> Self::Response { + self.inner.call(req) + } +} + +pub struct Inner; + +impl Service<()> for Inner { + type Response = Resp; + + fn call(&mut self, req: ()) -> Self::Response { + Resp::A(req) + } +} + +pub trait Extension { + type Item<'a>; + + fn touch<F>(self, f: F) -> Self + where + for<'a> F: Fn(Self::Item<'a>); +} + +pub enum Resp { + A(()), +} + +impl Extension for Resp { + type Item<'a> = RespItem<'a>; + fn touch<F>(self, _f: F) -> Self + where + for<'a> F: Fn(Self::Item<'a>), + { + match self { + Self::A(a) => Self::A(a), + } + } +} + +pub enum RespItem<'a> { + A(&'a ()), +} + +impl<'a> std::fmt::Debug for RespItem<'a> { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + match self { + Self::A(arg0) => f.debug_tuple("A").field(arg0).finish(), + } + } +} diff --git a/tests/ui/traits/issue-52893.stderr b/tests/ui/traits/issue-52893.stderr index a11867c03..db807a388 100644 --- a/tests/ui/traits/issue-52893.stderr +++ b/tests/ui/traits/issue-52893.stderr @@ -5,7 +5,7 @@ LL | impl<F, Name, P> AddClass<Name, F> for Class<P> | - this type parameter ... LL | builder.push(output); - | ---- ^^^^^^ expected type parameter `F`, found struct `Class` + | ---- ^^^^^^ expected type parameter `F`, found `Class<P>` | | | arguments to this method are incorrect | @@ -18,7 +18,7 @@ LL | builder.push(output); | ^^^^^^^^^^^^^------^ | | | this argument influences the return type of `push` -note: associated function defined here +note: method defined here --> $DIR/issue-52893.rs:11:8 | LL | fn push(self, other: T) -> Self::PushRes; diff --git a/tests/ui/traits/issue-68295.stderr b/tests/ui/traits/issue-68295.stderr index cb6e6e076..671a97666 100644 --- a/tests/ui/traits/issue-68295.stderr +++ b/tests/ui/traits/issue-68295.stderr @@ -5,7 +5,7 @@ LL | fn crash<R, C>(input: Matrix<R, C, ()>) -> Matrix<R, C, u32> | ----------------- expected `Matrix<R, C, u32>` because of return type ... LL | input.into_owned() - | ^^^^^^^^^^^^^^^^^^ expected `u32`, found associated type + | ^^^^^^^^^^^^^^^^^^ expected `Matrix<R, C, u32>`, found `Matrix<R, C, ...>` | = note: expected struct `Matrix<_, _, u32>` found struct `Matrix<_, _, <() as Allocator<R, C>>::Buffer>` diff --git a/tests/ui/traits/issue-77982.stderr b/tests/ui/traits/issue-77982.stderr index 0b57a8212..d4fea05fe 100644 --- a/tests/ui/traits/issue-77982.stderr +++ b/tests/ui/traits/issue-77982.stderr @@ -4,7 +4,7 @@ error[E0283]: type annotations needed LL | opts.get(opt.as_ref()); | ^^^ ------------ type must be known at this point | | - | cannot infer type of the type parameter `Q` declared on the associated function `get` + | cannot infer type of the type parameter `Q` declared on the method `get` | = note: multiple `impl`s satisfying `String: Borrow<_>` found in the following crates: `alloc`, `core`: - impl Borrow<str> for String; @@ -23,7 +23,7 @@ error[E0283]: type annotations needed LL | opts.get(opt.as_ref()); | ^^^ ------ type must be known at this point | | - | cannot infer type of the type parameter `Q` declared on the associated function `get` + | cannot infer type of the type parameter `Q` declared on the method `get` | = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`: - impl AsRef<OsStr> for String; @@ -43,7 +43,7 @@ LL | let ips: Vec<_> = (0..100_000).map(|_| u32::from(0u32.into())).collect( | | | required by a bound introduced by this call | - = note: multiple `impl`s satisfying `u32: From<_>` found in the following crates: `core`, `std`: + = note: multiple `impl`s satisfying `u32: From<_>` found in the `core` crate: - impl From<Ipv4Addr> for u32; - impl From<NonZeroU32> for u32; - impl From<bool> for u32; diff --git a/tests/ui/traits/item-privacy.rs b/tests/ui/traits/item-privacy.rs index 38d06b967..a3e1a22e7 100644 --- a/tests/ui/traits/item-privacy.rs +++ b/tests/ui/traits/item-privacy.rs @@ -69,7 +69,7 @@ fn check_method() { S.c(); // OK // a, b, c are resolved as inherent items, their traits don't need to be in scope let c = &S as &dyn C; - c.a(); //~ ERROR associated function `a` is private + c.a(); //~ ERROR method `a` is private c.b(); // OK c.c(); // OK @@ -81,7 +81,7 @@ fn check_method() { //~^ ERROR no function or associated item named `b` found S::c(&S); // OK // a, b, c are resolved as inherent items, their traits don't need to be in scope - <dyn C>::a(&S); //~ ERROR associated function `a` is private + <dyn C>::a(&S); //~ ERROR method `a` is private <dyn C>::b(&S); // OK C::c(&S); // OK } diff --git a/tests/ui/traits/item-privacy.stderr b/tests/ui/traits/item-privacy.stderr index 293cfbda8..04995b3a1 100644 --- a/tests/ui/traits/item-privacy.stderr +++ b/tests/ui/traits/item-privacy.stderr @@ -32,14 +32,14 @@ help: the following trait is implemented but not in scope; perhaps add a `use` f LL | use method::B; | -error[E0624]: associated function `a` is private +error[E0624]: method `a` is private --> $DIR/item-privacy.rs:72:7 | LL | fn a(&self) { } - | ----------- private associated function defined here + | ----------- private method defined here ... LL | c.a(); - | ^ private associated function + | ^ private method error[E0599]: no function or associated item named `a` found for struct `S` in the current scope --> $DIR/item-privacy.rs:78:8 @@ -72,14 +72,14 @@ help: the following trait is implemented but not in scope; perhaps add a `use` f LL | use method::B; | -error[E0624]: associated function `a` is private +error[E0624]: method `a` is private --> $DIR/item-privacy.rs:84:14 | LL | fn a(&self) { } - | ----------- private associated function defined here + | ----------- private method defined here ... LL | <dyn C>::a(&S); - | ^ private associated function + | ^ private method error[E0599]: no associated item named `A` found for struct `S` in the current scope --> $DIR/item-privacy.rs:97:8 diff --git a/tests/ui/traits/method-private.stderr b/tests/ui/traits/method-private.stderr index 8e991ec01..55656f21e 100644 --- a/tests/ui/traits/method-private.stderr +++ b/tests/ui/traits/method-private.stderr @@ -1,11 +1,11 @@ -error[E0624]: associated function `method` is private +error[E0624]: method `method` is private --> $DIR/method-private.rs:19:9 | LL | fn method(&self) {} - | ---------------- private associated function defined here + | ---------------- private method defined here ... LL | foo.method(); - | ^^^^^^ private associated function + | ^^^^^^ private method | = help: items from traits can only be used if the trait is in scope help: the following trait is implemented but not in scope; perhaps add a `use` for it: diff --git a/tests/ui/traits/multidispatch-convert-ambig-dest.stderr b/tests/ui/traits/multidispatch-convert-ambig-dest.stderr index 6e6172eea..e927f26e9 100644 --- a/tests/ui/traits/multidispatch-convert-ambig-dest.stderr +++ b/tests/ui/traits/multidispatch-convert-ambig-dest.stderr @@ -29,7 +29,7 @@ note: required by a bound in `test` --> $DIR/multidispatch-convert-ambig-dest.rs:21:11 | LL | fn test<T,U>(_: T, _: U) - | ---- required by a bound in this + | ---- required by a bound in this function LL | where T : Convert<U> | ^^^^^^^^^^ required by this bound in `test` help: consider specifying the generic arguments diff --git a/tests/ui/traits/negative-impls/negated-auto-traits-error.stderr b/tests/ui/traits/negative-impls/negated-auto-traits-error.stderr index ce690b749..b680ce7f9 100644 --- a/tests/ui/traits/negative-impls/negated-auto-traits-error.stderr +++ b/tests/ui/traits/negative-impls/negated-auto-traits-error.stderr @@ -101,10 +101,10 @@ LL | fn is_send<T: Send>(_: T) {} | ^^^^ required by this bound in `is_send` error[E0277]: `main::TestType` cannot be sent between threads safely - --> $DIR/negated-auto-traits-error.rs:66:13 + --> $DIR/negated-auto-traits-error.rs:66:20 | LL | is_sync(Outer2(TestType)); - | ------- ^^^^^^^^^^^^^^^^ `main::TestType` cannot be sent between threads safely + | ------- ^^^^^^^^ `main::TestType` cannot be sent between threads safely | | | required by a bound introduced by this call | diff --git a/tests/ui/traits/negative-impls/no-items.stderr b/tests/ui/traits/negative-impls/no-items.stderr index 67b94bba1..040d9d145 100644 --- a/tests/ui/traits/negative-impls/no-items.stderr +++ b/tests/ui/traits/negative-impls/no-items.stderr @@ -2,7 +2,7 @@ error[E0749]: negative impls cannot have any items --> $DIR/no-items.rs:8:5 | LL | type Foo = i32; - | ^^^^^^^^^^^^^^^ + | ^^^^^^^^ error: aborting due to previous error diff --git a/tests/ui/traits/new-solver/alias_eq_cant_be_furthur_normalized.rs b/tests/ui/traits/new-solver/alias_eq_cant_be_furthur_normalized.rs new file mode 100644 index 000000000..dc726ba51 --- /dev/null +++ b/tests/ui/traits/new-solver/alias_eq_cant_be_furthur_normalized.rs @@ -0,0 +1,29 @@ +// check-pass +// compile-flags: -Ztrait-solver=next + +// check that a goal such as `alias-eq(<T as TraitB>::Assoc<bool>, <T as TraitB>::Assoc<?0>)` +// succeeds with a constraint that `?0 = bool` + +// FIXME(deferred_projection_equality): add a test that this is true during coherence + +trait TraitA {} + +trait TraitB { + type Assoc<T: ?Sized>; +} + +impl<T: TraitB> TraitA for (T, T::Assoc<bool>) {} + +impl TraitB for i32 { + type Assoc<T: ?Sized> = u32; +} + +fn needs_a<T: TraitA>() {} + +fn bar<T: TraitB>() { + needs_a::<(T, <T as TraitB>::Assoc<_>)>(); +} + +fn main() { + bar::<i32>(); +} diff --git a/tests/ui/traits/new-solver/alias_eq_dont_use_normalizes_to_if_substs_eq.rs b/tests/ui/traits/new-solver/alias_eq_dont_use_normalizes_to_if_substs_eq.rs new file mode 100644 index 000000000..fd5d0e3b1 --- /dev/null +++ b/tests/ui/traits/new-solver/alias_eq_dont_use_normalizes_to_if_substs_eq.rs @@ -0,0 +1,45 @@ +// compile-flags: -Ztrait-solver=next + +// check that when computing `alias-eq(<() as Foo<u16, T>>::Assoc, <() as Foo<?0, T>>::Assoc)` +// we do not infer `?0 = u8` via the `for<STOP> (): Foo<u8, STOP>` impl or `?0 = u16` by +// relating substs as either could be a valid solution. + +trait Foo<T, STOP> { + type Assoc; +} + +impl<STOP> Foo<u8, STOP> for () +where + (): Foo<u16, STOP>, +{ + type Assoc = <() as Foo<u16, STOP>>::Assoc; +} + +impl Foo<u16, i8> for () { + type Assoc = u8; +} + +impl Foo<u16, i16> for () { + type Assoc = u16; +} + +fn output<T, U>() -> <() as Foo<T, U>>::Assoc +where + (): Foo<T, U>, +{ + todo!() +} + +fn incomplete<T>() +where + (): Foo<u16, T>, +{ + // `<() as Foo<u16, STOP>>::Assoc == <() as Foo<_, STOP>>::Assoc` + let _: <() as Foo<u16, T>>::Assoc = output::<_, T>(); + //~^ error: type annotations needed + + // let _: <() as Foo<u16, T>>::Assoc = output::<u8, T>(); // OK + // let _: <() as Foo<u16, T>>::Assoc = output::<u16, T>(); // OK +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/alias_eq_dont_use_normalizes_to_if_substs_eq.stderr b/tests/ui/traits/new-solver/alias_eq_dont_use_normalizes_to_if_substs_eq.stderr new file mode 100644 index 000000000..a6712332c --- /dev/null +++ b/tests/ui/traits/new-solver/alias_eq_dont_use_normalizes_to_if_substs_eq.stderr @@ -0,0 +1,9 @@ +error[E0282]: type annotations needed + --> $DIR/alias_eq_dont_use_normalizes_to_if_substs_eq.rs:38:41 + | +LL | let _: <() as Foo<u16, T>>::Assoc = output::<_, T>(); + | ^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `output` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0282`. diff --git a/tests/ui/traits/new-solver/alias_eq_simple.rs b/tests/ui/traits/new-solver/alias_eq_simple.rs new file mode 100644 index 000000000..6792cf3ce --- /dev/null +++ b/tests/ui/traits/new-solver/alias_eq_simple.rs @@ -0,0 +1,22 @@ +// check-pass +// compile-flags: -Ztrait-solver=next + +// test that the new solver can handle `alias-eq(<i32 as TraitB>::Assoc, u32)` + +trait TraitA {} + +trait TraitB { + type Assoc; +} + +impl<T: TraitB> TraitA for (T, T::Assoc) {} + +impl TraitB for i32 { + type Assoc = u32; +} + +fn needs_a<T: TraitA>() {} + +fn main() { + needs_a::<(i32, u32)>(); +} diff --git a/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.rs b/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.rs new file mode 100644 index 000000000..d4cc380fa --- /dev/null +++ b/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.rs @@ -0,0 +1,20 @@ +// compile-flags: -Ztrait-solver=next + +// check that a `alias-eq(<?0 as TraitB>::Assoc, <T as TraitB>::Assoc)` goal fails. + +// FIXME(deferred_projection_equality): add a test that this is true during coherence + +trait TraitB { + type Assoc; +} + +fn needs_a<T: TraitB>() -> T::Assoc { + unimplemented!() +} + +fn bar<T: TraitB>() { + let _: <_ as TraitB>::Assoc = needs_a::<T>(); + //~^ error: type annotations needed +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.stderr b/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.stderr new file mode 100644 index 000000000..d063d8fce --- /dev/null +++ b/tests/ui/traits/new-solver/alias_eq_substs_eq_not_intercrate.stderr @@ -0,0 +1,9 @@ +error[E0282]: type annotations needed + --> $DIR/alias_eq_substs_eq_not_intercrate.rs:16:12 + | +LL | let _: <_ as TraitB>::Assoc = needs_a::<T>(); + | ^^^^^^^^^^^^^^^^^^^^ cannot infer type for associated type `<_ as TraitB>::Assoc` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0282`. diff --git a/tests/ui/traits/new-solver/async.fail.stderr b/tests/ui/traits/new-solver/async.fail.stderr new file mode 100644 index 000000000..b395c23ae --- /dev/null +++ b/tests/ui/traits/new-solver/async.fail.stderr @@ -0,0 +1,17 @@ +error[E0271]: expected `[async block@$DIR/async.rs:12:17: 12:25]` to be a future that resolves to `i32`, but it resolves to `()` + --> $DIR/async.rs:12:17 + | +LL | needs_async(async {}); + | ----------- ^^^^^^^^ expected `i32`, found `()` + | | + | required by a bound introduced by this call + | +note: required by a bound in `needs_async` + --> $DIR/async.rs:8:31 + | +LL | fn needs_async(_: impl Future<Output = i32>) {} + | ^^^^^^^^^^^^ required by this bound in `needs_async` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0271`. diff --git a/tests/ui/traits/new-solver/async.rs b/tests/ui/traits/new-solver/async.rs new file mode 100644 index 000000000..195cc35ca --- /dev/null +++ b/tests/ui/traits/new-solver/async.rs @@ -0,0 +1,19 @@ +// compile-flags: -Ztrait-solver=next +// edition: 2021 +// revisions: pass fail +//[pass] check-pass + +use std::future::Future; + +fn needs_async(_: impl Future<Output = i32>) {} + +#[cfg(fail)] +fn main() { + needs_async(async {}); + //[fail]~^ ERROR to be a future that resolves to `i32`, but it resolves to `()` +} + +#[cfg(pass)] +fn main() { + needs_async(async { 1i32 }); +} diff --git a/tests/ui/traits/new-solver/builtin-fn-must-return-sized.rs b/tests/ui/traits/new-solver/builtin-fn-must-return-sized.rs new file mode 100644 index 000000000..ba473653e --- /dev/null +++ b/tests/ui/traits/new-solver/builtin-fn-must-return-sized.rs @@ -0,0 +1,17 @@ +// compile-flags: -Ztrait-solver=next + +#![feature(fn_traits)] +#![feature(unboxed_closures)] +#![feature(tuple_trait)] + +use std::ops::Fn; +use std::marker::Tuple; + +fn foo<F: Fn<T>, T: Tuple>(f: Option<F>, t: T) { + let y = (f.unwrap()).call(t); +} + +fn main() { + foo::<fn() -> str, _>(None, ()); + //~^ expected a `Fn<_>` closure, found `fn() -> str` +} diff --git a/tests/ui/traits/new-solver/builtin-fn-must-return-sized.stderr b/tests/ui/traits/new-solver/builtin-fn-must-return-sized.stderr new file mode 100644 index 000000000..f7551739b --- /dev/null +++ b/tests/ui/traits/new-solver/builtin-fn-must-return-sized.stderr @@ -0,0 +1,18 @@ +error[E0277]: expected a `Fn<_>` closure, found `fn() -> str` + --> $DIR/builtin-fn-must-return-sized.rs:15:27 + | +LL | foo::<fn() -> str, _>(None, ()); + | --------------------- ^^^^ expected an `Fn<_>` closure, found `fn() -> str` + | | + | required by a bound introduced by this call + | + = help: the trait `Fn<_>` is not implemented for `fn() -> str` +note: required by a bound in `foo` + --> $DIR/builtin-fn-must-return-sized.rs:10:11 + | +LL | fn foo<F: Fn<T>, T: Tuple>(f: Option<F>, t: T) { + | ^^^^^ required by this bound in `foo` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/new-solver/elaborate-item-bounds.rs b/tests/ui/traits/new-solver/elaborate-item-bounds.rs new file mode 100644 index 000000000..076aefcf8 --- /dev/null +++ b/tests/ui/traits/new-solver/elaborate-item-bounds.rs @@ -0,0 +1,12 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +trait Foo { + type Bar: Bar; +} + +trait Bar: Baz {} + +trait Baz {} + +fn main() {} diff --git a/tests/ui/traits/new-solver/fn-trait-closure.rs b/tests/ui/traits/new-solver/fn-trait-closure.rs index c0ecf1c91..bd65737ee 100644 --- a/tests/ui/traits/new-solver/fn-trait-closure.rs +++ b/tests/ui/traits/new-solver/fn-trait-closure.rs @@ -1,12 +1,5 @@ // compile-flags: -Ztrait-solver=next -// known-bug: unknown -// failure-status: 101 -// dont-check-compiler-stderr - -// This test will fail until we fix `FulfillmentCtxt::relationships`. That's -// because we create a type variable for closure upvar types, which is not -// constrained until after we try to do fallback on diverging type variables. -// Thus, we will call that function, which is unimplemented. +// check-pass fn require_fn(_: impl Fn() -> i32) {} diff --git a/tests/ui/traits/new-solver/generator.fail.stderr b/tests/ui/traits/new-solver/generator.fail.stderr new file mode 100644 index 000000000..d94d41e35 --- /dev/null +++ b/tests/ui/traits/new-solver/generator.fail.stderr @@ -0,0 +1,64 @@ +error[E0277]: the trait bound `[generator@$DIR/generator.rs:18:21: 18:23]: Generator<A>` is not satisfied + --> $DIR/generator.rs:18:21 + | +LL | needs_generator(|| { + | _____---------------_^ + | | | + | | required by a bound introduced by this call +LL | | +LL | | +LL | | +LL | | yield (); +LL | | }); + | |_____^ the trait `Generator<A>` is not implemented for `[generator@$DIR/generator.rs:18:21: 18:23]` + | +note: required by a bound in `needs_generator` + --> $DIR/generator.rs:14:28 + | +LL | fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `needs_generator` + +error[E0271]: type mismatch resolving `<[generator@$DIR/generator.rs:18:21: 18:23] as Generator<A>>::Yield == B` + --> $DIR/generator.rs:18:21 + | +LL | needs_generator(|| { + | _____---------------_^ + | | | + | | required by a bound introduced by this call +LL | | +LL | | +LL | | +LL | | yield (); +LL | | }); + | |_____^ types differ + | +note: required by a bound in `needs_generator` + --> $DIR/generator.rs:14:41 + | +LL | fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {} + | ^^^^^^^^^ required by this bound in `needs_generator` + +error[E0271]: type mismatch resolving `<[generator@$DIR/generator.rs:18:21: 18:23] as Generator<A>>::Return == C` + --> $DIR/generator.rs:18:21 + | +LL | needs_generator(|| { + | _____---------------_^ + | | | + | | required by a bound introduced by this call +LL | | +LL | | +LL | | +LL | | yield (); +LL | | }); + | |_____^ types differ + | +note: required by a bound in `needs_generator` + --> $DIR/generator.rs:14:52 + | +LL | fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {} + | ^^^^^^^^^^ required by this bound in `needs_generator` + +error: aborting due to 3 previous errors + +Some errors have detailed explanations: E0271, E0277. +For more information about an error, try `rustc --explain E0271`. diff --git a/tests/ui/traits/new-solver/generator.rs b/tests/ui/traits/new-solver/generator.rs new file mode 100644 index 000000000..364373ca8 --- /dev/null +++ b/tests/ui/traits/new-solver/generator.rs @@ -0,0 +1,32 @@ +// compile-flags: -Ztrait-solver=next +// edition: 2021 +// revisions: pass fail +//[pass] check-pass + +#![feature(generator_trait, generators)] + +use std::ops::Generator; + +struct A; +struct B; +struct C; + +fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {} + +#[cfg(fail)] +fn main() { + needs_generator(|| { + //[fail]~^ ERROR Generator<A>` is not satisfied + //[fail]~| ERROR as Generator<A>>::Yield == B` + //[fail]~| ERROR as Generator<A>>::Return == C` + yield (); + }); +} + +#[cfg(pass)] +fn main() { + needs_generator(|_: A| { + let _: A = yield B; + C + }) +} diff --git a/tests/ui/traits/new-solver/higher-ranked-dyn-bounds.rs b/tests/ui/traits/new-solver/higher-ranked-dyn-bounds.rs new file mode 100644 index 000000000..c886aeeda --- /dev/null +++ b/tests/ui/traits/new-solver/higher-ranked-dyn-bounds.rs @@ -0,0 +1,17 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +trait Trait<'a> { + type Item: for<'b> Trait2<'b>; +} + +trait Trait2<'a> {} +impl Trait2<'_> for () {} + +fn needs_trait(_: Box<impl for<'a> Trait<'a> + ?Sized>) {} + +fn foo(x: Box<dyn for<'a> Trait<'a, Item = ()>>) { + needs_trait(x); +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/more-object-bound.rs b/tests/ui/traits/new-solver/more-object-bound.rs new file mode 100644 index 000000000..712759ef0 --- /dev/null +++ b/tests/ui/traits/new-solver/more-object-bound.rs @@ -0,0 +1,27 @@ +// compile-flags: -Ztrait-solver=next +// From #80800 + +trait SuperTrait { + type A; + type B; +} + +trait Trait: SuperTrait<A = <Self as SuperTrait>::B> {} + +fn transmute<A, B>(x: A) -> B { + foo::<A, B, dyn Trait<A = A, B = B>>(x) + //~^ ERROR type annotations needed: cannot satisfy `dyn Trait<A = A, B = B>: Trait` +} + +fn foo<A, B, T: ?Sized>(x: T::A) -> B +where + T: Trait<B = B>, +{ + x +} + +static X: u8 = 0; +fn main() { + let x = transmute::<&u8, &[u8; 1_000_000]>(&X); + println!("{:?}", x[100_000]); +} diff --git a/tests/ui/traits/new-solver/more-object-bound.stderr b/tests/ui/traits/new-solver/more-object-bound.stderr new file mode 100644 index 000000000..208fdecb0 --- /dev/null +++ b/tests/ui/traits/new-solver/more-object-bound.stderr @@ -0,0 +1,19 @@ +error[E0283]: type annotations needed: cannot satisfy `dyn Trait<A = A, B = B>: Trait` + --> $DIR/more-object-bound.rs:12:5 + | +LL | foo::<A, B, dyn Trait<A = A, B = B>>(x) + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: cannot satisfy `dyn Trait<A = A, B = B>: Trait` +note: required by a bound in `foo` + --> $DIR/more-object-bound.rs:18:8 + | +LL | fn foo<A, B, T: ?Sized>(x: T::A) -> B + | --- required by a bound in this function +LL | where +LL | T: Trait<B = B>, + | ^^^^^^^^^^^^ required by this bound in `foo` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0283`. diff --git a/tests/ui/traits/new-solver/normalizes_to_ignores_unnormalizable_candidate.rs b/tests/ui/traits/new-solver/normalizes_to_ignores_unnormalizable_candidate.rs new file mode 100644 index 000000000..46343241b --- /dev/null +++ b/tests/ui/traits/new-solver/normalizes_to_ignores_unnormalizable_candidate.rs @@ -0,0 +1,40 @@ +// [no_self_infer] check-pass +// compile-flags: -Ztrait-solver=next +// revisions: self_infer no_self_infer + +// checks that the new solver is smart enough to infer `?0 = U` when solving: +// `normalizes-to(<Vec<?0> as Trait>::Assoc, u8)` +// with `normalizes-to(<Vec<U> as Trait>::Assoc, u8)` in the paramenv even when +// there is a separate `Vec<T>: Trait` bound in the paramenv. +// +// FIXME(-Ztrait-solver=next) +// This could also compile for `normalizes-to(<?0 as Trait>::Assoc, u8)` but +// we currently immediately consider a goal ambiguous if the self type is an +// inference variable. + +trait Trait { + type Assoc; +} + +fn foo<T: Trait<Assoc = u8>>(x: T) {} + +#[cfg(self_infer)] +fn unconstrained<T>() -> T { + todo!() +} + +#[cfg(no_self_infer)] +fn unconstrained<T>() -> Vec<T> { + todo!() +} + +fn bar<T, U>() +where + Vec<T>: Trait, + Vec<U>: Trait<Assoc = u8>, +{ + foo(unconstrained()) + //[self_infer]~^ ERROR type annotations needed +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/normalizes_to_ignores_unnormalizable_candidate.self_infer.stderr b/tests/ui/traits/new-solver/normalizes_to_ignores_unnormalizable_candidate.self_infer.stderr new file mode 100644 index 000000000..062832012 --- /dev/null +++ b/tests/ui/traits/new-solver/normalizes_to_ignores_unnormalizable_candidate.self_infer.stderr @@ -0,0 +1,14 @@ +error[E0282]: type annotations needed + --> $DIR/normalizes_to_ignores_unnormalizable_candidate.rs:36:5 + | +LL | foo(unconstrained()) + | ^^^ cannot infer type of the type parameter `T` declared on the function `foo` + | +help: consider specifying the generic argument + | +LL | foo::<T>(unconstrained()) + | +++++ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0282`. diff --git a/tests/ui/traits/new-solver/object-unsafety.rs b/tests/ui/traits/new-solver/object-unsafety.rs new file mode 100644 index 000000000..7bdd863a7 --- /dev/null +++ b/tests/ui/traits/new-solver/object-unsafety.rs @@ -0,0 +1,20 @@ +// compile-flags: -Ztrait-solver=next + +trait Setup { + type From: Copy; +} + +fn copy<U: Setup + ?Sized>(from: &U::From) -> U::From { + *from +} + +pub fn copy_any<T>(t: &T) -> T { + copy::<dyn Setup<From=T>>(t) + //~^ ERROR the trait bound `dyn Setup<From = T>: Setup` is not satisfied +} + +fn main() { + let x = String::from("Hello, world"); + let y = copy_any(&x); + println!("{y}"); +} diff --git a/tests/ui/traits/new-solver/object-unsafety.stderr b/tests/ui/traits/new-solver/object-unsafety.stderr new file mode 100644 index 000000000..198ac623d --- /dev/null +++ b/tests/ui/traits/new-solver/object-unsafety.stderr @@ -0,0 +1,19 @@ +error[E0277]: the trait bound `dyn Setup<From = T>: Setup` is not satisfied + --> $DIR/object-unsafety.rs:12:12 + | +LL | copy::<dyn Setup<From=T>>(t) + | ^^^^^^^^^^^^^^^^^ the trait `Setup` is not implemented for `dyn Setup<From = T>` + | +note: required by a bound in `copy` + --> $DIR/object-unsafety.rs:7:12 + | +LL | fn copy<U: Setup + ?Sized>(from: &U::From) -> U::From { + | ^^^^^ required by this bound in `copy` +help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement + | +LL | pub fn copy_any<T>(t: &T) -> T where dyn Setup<From = T>: Setup { + | ++++++++++++++++++++++++++++++++ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/new-solver/param-candidate-doesnt-shadow-project.rs b/tests/ui/traits/new-solver/param-candidate-doesnt-shadow-project.rs new file mode 100644 index 000000000..bdf999ec5 --- /dev/null +++ b/tests/ui/traits/new-solver/param-candidate-doesnt-shadow-project.rs @@ -0,0 +1,25 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +trait Foo { + type Assoc; +} + +trait Bar {} + +impl<T> Foo for T { + type Assoc = i32; +} + +impl<T> Bar for T where T: Foo<Assoc = i32> {} + +fn require_bar<T: Bar>() {} + +fn foo<T: Foo>() { + // Unlike the classic solver, `<T as Foo>::Assoc = _` will still project + // down to `i32` even though there's a param-env candidate here, since we + // don't assemble any param-env projection candidates for `T: Foo` alone. + require_bar::<T>(); +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/pointee.rs b/tests/ui/traits/new-solver/pointee.rs new file mode 100644 index 000000000..fa6ee2e2d --- /dev/null +++ b/tests/ui/traits/new-solver/pointee.rs @@ -0,0 +1,23 @@ +// compile-flags: -Ztrait-solver=next +// check-pass +#![feature(ptr_metadata)] + +use std::ptr::{DynMetadata, Pointee}; + +trait Trait<U> {} +struct MyDst<T: ?Sized>(T); + +fn works<T>() { + let _: <T as Pointee>::Metadata = (); + let _: <[T] as Pointee>::Metadata = 1_usize; + let _: <str as Pointee>::Metadata = 1_usize; + let _: <dyn Trait<T> as Pointee>::Metadata = give::<DynMetadata<dyn Trait<T>>>(); + let _: <MyDst<T> as Pointee>::Metadata = (); + let _: <((((([u8],),),),),) as Pointee>::Metadata = 1_usize; +} + +fn give<U>() -> U { + loop {} +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/pointer-like.rs b/tests/ui/traits/new-solver/pointer-like.rs new file mode 100644 index 000000000..3745a075e --- /dev/null +++ b/tests/ui/traits/new-solver/pointer-like.rs @@ -0,0 +1,14 @@ +// compile-flags: -Ztrait-solver=next + +#![feature(pointer_like_trait)] + +use std::marker::PointerLike; + +fn require_(_: impl PointerLike) {} + +fn main() { + require_(1usize); + require_(1u16); + //~^ ERROR `u16` needs to have the same alignment and size as a pointer + require_(&1i16); +} diff --git a/tests/ui/traits/new-solver/pointer-like.stderr b/tests/ui/traits/new-solver/pointer-like.stderr new file mode 100644 index 000000000..f695e6418 --- /dev/null +++ b/tests/ui/traits/new-solver/pointer-like.stderr @@ -0,0 +1,24 @@ +error[E0277]: `u16` needs to have the same alignment and size as a pointer + --> $DIR/pointer-like.rs:11:14 + | +LL | require_(1u16); + | -------- ^^^^ the trait `PointerLike` is not implemented for `u16` + | | + | required by a bound introduced by this call + | + = note: the trait bound `u16: PointerLike` is not satisfied +note: required by a bound in `require_` + --> $DIR/pointer-like.rs:7:21 + | +LL | fn require_(_: impl PointerLike) {} + | ^^^^^^^^^^^ required by this bound in `require_` +help: consider borrowing here + | +LL | require_(&1u16); + | + +LL | require_(&mut 1u16); + | ++++ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/new-solver/pointer-sized.rs b/tests/ui/traits/new-solver/pointer-sized.rs deleted file mode 100644 index 15681cd13..000000000 --- a/tests/ui/traits/new-solver/pointer-sized.rs +++ /dev/null @@ -1,12 +0,0 @@ -#![feature(pointer_sized_trait)] - -use std::marker::PointerSized; - -fn require_pointer_sized(_: impl PointerSized) {} - -fn main() { - require_pointer_sized(1usize); - require_pointer_sized(1u16); - //~^ ERROR `u16` needs to be a pointer-sized type - require_pointer_sized(&1i16); -} diff --git a/tests/ui/traits/new-solver/pointer-sized.stderr b/tests/ui/traits/new-solver/pointer-sized.stderr deleted file mode 100644 index b250b1331..000000000 --- a/tests/ui/traits/new-solver/pointer-sized.stderr +++ /dev/null @@ -1,24 +0,0 @@ -error[E0277]: `u16` needs to be a pointer-sized type - --> $DIR/pointer-sized.rs:9:27 - | -LL | require_pointer_sized(1u16); - | --------------------- ^^^^ the trait `PointerSized` is not implemented for `u16` - | | - | required by a bound introduced by this call - | - = note: the trait bound `u16: PointerSized` is not satisfied -note: required by a bound in `require_pointer_sized` - --> $DIR/pointer-sized.rs:5:34 - | -LL | fn require_pointer_sized(_: impl PointerSized) {} - | ^^^^^^^^^^^^ required by this bound in `require_pointer_sized` -help: consider borrowing here - | -LL | require_pointer_sized(&1u16); - | + -LL | require_pointer_sized(&mut 1u16); - | ++++ - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/new-solver/provisional-result-done.rs b/tests/ui/traits/new-solver/provisional-result-done.rs new file mode 100644 index 000000000..589d34dd7 --- /dev/null +++ b/tests/ui/traits/new-solver/provisional-result-done.rs @@ -0,0 +1,33 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +// This tests checks that we update results in the provisional cache when +// we pop a goal from the stack. +#![feature(auto_traits)] +auto trait Coinductive {} +struct Foo<T>(T); +struct Bar<T>(T); + +impl<T> Coinductive for Foo<T> +where + Bar<T>: Coinductive +{} + +impl<T> Coinductive for Bar<T> +where + Foo<T>: Coinductive, + Bar<T>: ConstrainInfer, +{} + +trait ConstrainInfer {} +impl ConstrainInfer for Bar<u8> {} +impl ConstrainInfer for Foo<u16> {} + +fn impls<T: Coinductive>() -> T { todo!() } + +fn constrain<T: ConstrainInfer>(_: T) {} + +fn main() { + // This should constrain `_` to `u8`. + impls::<Foo<_>>(); +} diff --git a/tests/ui/traits/new-solver/temporary-ambiguity.rs b/tests/ui/traits/new-solver/temporary-ambiguity.rs new file mode 100644 index 000000000..18ee05457 --- /dev/null +++ b/tests/ui/traits/new-solver/temporary-ambiguity.rs @@ -0,0 +1,22 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +// Checks that we don't explode when we assemble >1 candidate for a goal. + +struct Wrapper<T>(T); + +trait Foo {} + +impl Foo for Wrapper<i32> {} + +impl Foo for Wrapper<()> {} + +fn needs_foo(_: impl Foo) {} + +fn main() { + let mut x = Default::default(); + let w = Wrapper(x); + needs_foo(w); + x = 1; + drop(x); +} diff --git a/tests/ui/traits/new-solver/try-example.rs b/tests/ui/traits/new-solver/try-example.rs new file mode 100644 index 000000000..e826f3a00 --- /dev/null +++ b/tests/ui/traits/new-solver/try-example.rs @@ -0,0 +1,28 @@ +// check-pass +// compile-flags: -Ztrait-solver=next + +use std::error::Error; + +fn main() -> Result<(), Box<dyn Error>> { + let x: i32 = parse()?; + Ok(()) +} + +trait Parse {} + +impl Parse for i32 {} + +#[derive(Debug)] +struct ParseError; + +impl std::fmt::Display for ParseError { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + write!(f, "ParseError") + } +} + +impl Error for ParseError {} + +fn parse<T: Parse>() -> Result<T, ParseError> { + todo!() +} diff --git a/tests/ui/traits/new-solver/two-projection-param-candidates-are-ambiguous.rs b/tests/ui/traits/new-solver/two-projection-param-candidates-are-ambiguous.rs new file mode 100644 index 000000000..cde2059ca --- /dev/null +++ b/tests/ui/traits/new-solver/two-projection-param-candidates-are-ambiguous.rs @@ -0,0 +1,30 @@ +// compile-flags: -Ztrait-solver=next + +// When we're solving `<T as Foo>::Assoc = i32`, we actually first solve +// `<T as Foo>::Assoc = _#1t`, then unify `_#1t` with `i32`. That goal +// with the inference variable is ambiguous when there are >1 param-env +// candidates. + +// We don't unify the RHS of a projection goal eagerly when solving, both +// for caching reasons and partly to make sure that we don't make the new +// trait solver smarter than it should be. + +// This is (as far as I can tell) a forwards-compatible decision, but if you +// make this test go from fail to pass, be sure you understand the implications! + +trait Foo { + type Assoc; +} + +trait Bar {} + +impl<T> Bar for T where T: Foo<Assoc = i32> {} + +fn needs_bar<T: Bar>() {} + +fn foo<T: Foo<Assoc = i32> + Foo<Assoc = u32>>() { + needs_bar::<T>(); + //~^ ERROR type annotations needed: cannot satisfy `T: Bar` +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/two-projection-param-candidates-are-ambiguous.stderr b/tests/ui/traits/new-solver/two-projection-param-candidates-are-ambiguous.stderr new file mode 100644 index 000000000..fa5e780ee --- /dev/null +++ b/tests/ui/traits/new-solver/two-projection-param-candidates-are-ambiguous.stderr @@ -0,0 +1,16 @@ +error[E0283]: type annotations needed: cannot satisfy `T: Bar` + --> $DIR/two-projection-param-candidates-are-ambiguous.rs:26:5 + | +LL | needs_bar::<T>(); + | ^^^^^^^^^^^^^^ + | + = note: cannot satisfy `T: Bar` +note: required by a bound in `needs_bar` + --> $DIR/two-projection-param-candidates-are-ambiguous.rs:23:17 + | +LL | fn needs_bar<T: Bar>() {} + | ^^^ required by this bound in `needs_bar` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0283`. diff --git a/tests/ui/traits/new-solver/unsafe-auto-trait-impl.rs b/tests/ui/traits/new-solver/unsafe-auto-trait-impl.rs new file mode 100644 index 000000000..bcfc747eb --- /dev/null +++ b/tests/ui/traits/new-solver/unsafe-auto-trait-impl.rs @@ -0,0 +1,8 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +struct Foo(*mut ()); + +unsafe impl Sync for Foo {} + +fn main() {} diff --git a/tests/ui/traits/new-solver/unsize-good.rs b/tests/ui/traits/new-solver/unsize-good.rs new file mode 100644 index 000000000..87ed9cfd1 --- /dev/null +++ b/tests/ui/traits/new-solver/unsize-good.rs @@ -0,0 +1,25 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +#![feature(unsized_tuple_coercion)] + +trait Foo {} + +impl Foo for i32 {} + +fn main() { + // Unsizing via struct + let _: Box<dyn Foo> = Box::new(1i32); + + // Slice unsizing + let y = [1, 2, 3]; + let _: &[i32] = &y; + + // Tuple unsizing + let hi = (1i32,); + let _: &(dyn Foo,) = &hi; + + // Dropping auto traits + let a: &(dyn Foo + Send) = &1; + let _: &dyn Foo = a; +} diff --git a/tests/ui/traits/new-solver/upcast-right-substs.rs b/tests/ui/traits/new-solver/upcast-right-substs.rs new file mode 100644 index 000000000..c19c82acf --- /dev/null +++ b/tests/ui/traits/new-solver/upcast-right-substs.rs @@ -0,0 +1,14 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +#![feature(trait_upcasting)] + +trait Foo: Bar<i32> + Bar<u32> {} + +trait Bar<T> {} + +fn main() { + let x: &dyn Foo = todo!(); + let y: &dyn Bar<i32> = x; + let z: &dyn Bar<u32> = x; +} diff --git a/tests/ui/traits/new-solver/upcast-wrong-substs.rs b/tests/ui/traits/new-solver/upcast-wrong-substs.rs new file mode 100644 index 000000000..f2d04d932 --- /dev/null +++ b/tests/ui/traits/new-solver/upcast-wrong-substs.rs @@ -0,0 +1,13 @@ +// compile-flags: -Ztrait-solver=next + +#![feature(trait_upcasting)] + +trait Foo: Bar<i32> + Bar<u32> {} + +trait Bar<T> {} + +fn main() { + let x: &dyn Foo = todo!(); + let y: &dyn Bar<usize> = x; + //~^ ERROR mismatched types +} diff --git a/tests/ui/traits/new-solver/upcast-wrong-substs.stderr b/tests/ui/traits/new-solver/upcast-wrong-substs.stderr new file mode 100644 index 000000000..8623f395f --- /dev/null +++ b/tests/ui/traits/new-solver/upcast-wrong-substs.stderr @@ -0,0 +1,14 @@ +error[E0308]: mismatched types + --> $DIR/upcast-wrong-substs.rs:11:30 + | +LL | let y: &dyn Bar<usize> = x; + | --------------- ^ expected trait `Bar`, found trait `Foo` + | | + | expected due to this + | + = note: expected reference `&dyn Bar<usize>` + found reference `&dyn Foo` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/traits/non_lifetime_binders/bad-sized-cond.rs b/tests/ui/traits/non_lifetime_binders/bad-sized-cond.rs new file mode 100644 index 000000000..dfc800c8e --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/bad-sized-cond.rs @@ -0,0 +1,23 @@ +#![feature(non_lifetime_binders)] +//~^ WARN is incomplete and may not be safe + +pub fn foo() +where + for<V> V: Sized, +{ +} + +pub fn bar() +where + for<V> V: IntoIterator, +{ +} + +fn main() { + foo(); + //~^ ERROR the size for values of type `V` cannot be known at compilation time + + bar(); + //~^ ERROR the size for values of type `V` cannot be known at compilation time + //~| ERROR `V` is not an iterator +} diff --git a/tests/ui/traits/non_lifetime_binders/bad-sized-cond.stderr b/tests/ui/traits/non_lifetime_binders/bad-sized-cond.stderr new file mode 100644 index 000000000..ed9b57cb1 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/bad-sized-cond.stderr @@ -0,0 +1,62 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/bad-sized-cond.rs:1:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0277]: the size for values of type `V` cannot be known at compilation time + --> $DIR/bad-sized-cond.rs:17:5 + | +LL | foo(); + | ^^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `V` +note: required by a bound in `foo` + --> $DIR/bad-sized-cond.rs:6:15 + | +LL | pub fn foo() + | --- required by a bound in this function +LL | where +LL | for<V> V: Sized, + | ^^^^^ required by this bound in `foo` + +error[E0277]: the size for values of type `V` cannot be known at compilation time + --> $DIR/bad-sized-cond.rs:20:5 + | +LL | bar(); + | ^^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `V` + = note: required for `V` to implement `IntoIterator` +note: required by a bound in `bar` + --> $DIR/bad-sized-cond.rs:12:15 + | +LL | pub fn bar() + | --- required by a bound in this function +LL | where +LL | for<V> V: IntoIterator, + | ^^^^^^^^^^^^ required by this bound in `bar` + +error[E0277]: `V` is not an iterator + --> $DIR/bad-sized-cond.rs:20:5 + | +LL | bar(); + | ^^^ `V` is not an iterator + | + = help: the trait `Iterator` is not implemented for `V` + = note: required for `V` to implement `IntoIterator` +note: required by a bound in `bar` + --> $DIR/bad-sized-cond.rs:12:15 + | +LL | pub fn bar() + | --- required by a bound in this function +LL | where +LL | for<V> V: IntoIterator, + | ^^^^^^^^^^^^ required by this bound in `bar` + +error: aborting due to 3 previous errors; 1 warning emitted + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/non_lifetime_binders/basic.rs b/tests/ui/traits/non_lifetime_binders/basic.rs new file mode 100644 index 000000000..a797aae65 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/basic.rs @@ -0,0 +1,19 @@ +// check-pass +// Basic test that show's we can succesfully typeck a `for<T>` where clause. + +#![feature(non_lifetime_binders)] +//~^ WARN the feature `non_lifetime_binders` is incomplete + +trait Trait {} + +impl<T: ?Sized> Trait for T {} + +fn foo() +where + for<T> T: Trait, +{ +} + +fn main() { + foo(); +} diff --git a/tests/ui/traits/non_lifetime_binders/basic.stderr b/tests/ui/traits/non_lifetime_binders/basic.stderr new file mode 100644 index 000000000..0fd16c5d0 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/basic.stderr @@ -0,0 +1,11 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/basic.rs:4:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/traits/non_lifetime_binders/fail.rs b/tests/ui/traits/non_lifetime_binders/fail.rs new file mode 100644 index 000000000..460f68907 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/fail.rs @@ -0,0 +1,23 @@ +// Error reporting for where `for<T> T: Trait` doesn't hold + +#![feature(non_lifetime_binders)] +//~^ WARN the feature `non_lifetime_binders` is incomplete + +trait Trait {} + +fn fail() +where + for<T> T: Trait, +{} + +fn auto_trait() +where + for<T> T: Send, +{} + +fn main() { + fail(); + //~^ ERROR the trait bound `T: Trait` is not satisfied + auto_trait(); + //~^ ERROR `T` cannot be sent between threads safely +} diff --git a/tests/ui/traits/non_lifetime_binders/fail.stderr b/tests/ui/traits/non_lifetime_binders/fail.stderr new file mode 100644 index 000000000..7bd02550f --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/fail.stderr @@ -0,0 +1,43 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/fail.rs:3:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0277]: the trait bound `T: Trait` is not satisfied + --> $DIR/fail.rs:19:5 + | +LL | fail(); + | ^^^^ the trait `Trait` is not implemented for `T` + | +note: required by a bound in `fail` + --> $DIR/fail.rs:10:15 + | +LL | fn fail() + | ---- required by a bound in this function +LL | where +LL | for<T> T: Trait, + | ^^^^^ required by this bound in `fail` + +error[E0277]: `T` cannot be sent between threads safely + --> $DIR/fail.rs:21:5 + | +LL | auto_trait(); + | ^^^^^^^^^^ `T` cannot be sent between threads safely + | + = help: the trait `Send` is not implemented for `T` +note: required by a bound in `auto_trait` + --> $DIR/fail.rs:15:15 + | +LL | fn auto_trait() + | ---------- required by a bound in this function +LL | where +LL | for<T> T: Send, + | ^^^^ required by this bound in `auto_trait` + +error: aborting due to 2 previous errors; 1 warning emitted + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/non_lifetime_binders/late-bound-in-anon-ct.rs b/tests/ui/traits/non_lifetime_binders/late-bound-in-anon-ct.rs new file mode 100644 index 000000000..3903bfe9b --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/late-bound-in-anon-ct.rs @@ -0,0 +1,11 @@ +#![feature(non_lifetime_binders, generic_const_exprs)] +//~^ WARN the feature `non_lifetime_binders` is incomplete +//~| WARN the feature `generic_const_exprs` is incomplete + +fn foo() -> usize +where + for<T> [i32; { let _: T = todo!(); 0 }]:, + //~^ ERROR cannot capture late-bound type parameter in a constant +{} + +fn main() {} diff --git a/tests/ui/traits/non_lifetime_binders/late-bound-in-anon-ct.stderr b/tests/ui/traits/non_lifetime_binders/late-bound-in-anon-ct.stderr new file mode 100644 index 000000000..fafff02de --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/late-bound-in-anon-ct.stderr @@ -0,0 +1,27 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/late-bound-in-anon-ct.rs:1:12 + | +LL | #![feature(non_lifetime_binders, generic_const_exprs)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/late-bound-in-anon-ct.rs:1:34 + | +LL | #![feature(non_lifetime_binders, generic_const_exprs)] + | ^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information + +error: cannot capture late-bound type parameter in a constant + --> $DIR/late-bound-in-anon-ct.rs:7:27 + | +LL | for<T> [i32; { let _: T = todo!(); 0 }]:, + | - ^ + | | + | parameter defined here + +error: aborting due to previous error; 2 warnings emitted + diff --git a/tests/ui/traits/non_lifetime_binders/object-lifetime-default-for-late.rs b/tests/ui/traits/non_lifetime_binders/object-lifetime-default-for-late.rs new file mode 100644 index 000000000..9830241c3 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/object-lifetime-default-for-late.rs @@ -0,0 +1,7 @@ +// check-pass +// compile-flags: --crate-type=lib + +#![feature(non_lifetime_binders)] +//~^ WARN the feature `non_lifetime_binders` is incomplete + +pub fn f<T>() where for<U> (T, U): Copy {} diff --git a/tests/ui/traits/non_lifetime_binders/object-lifetime-default-for-late.stderr b/tests/ui/traits/non_lifetime_binders/object-lifetime-default-for-late.stderr new file mode 100644 index 000000000..667575b72 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/object-lifetime-default-for-late.stderr @@ -0,0 +1,11 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/object-lifetime-default-for-late.rs:4:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/traits/non_lifetime_binders/on-dyn.rs b/tests/ui/traits/non_lifetime_binders/on-dyn.rs new file mode 100644 index 000000000..8fb7dd276 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/on-dyn.rs @@ -0,0 +1,13 @@ +// Tests to make sure that we reject polymorphic dyn trait. + +#![feature(non_lifetime_binders)] +//~^ WARN the feature `non_lifetime_binders` is incomplete + +trait Test<T> {} + +fn foo() -> &'static dyn for<T> Test<T> { + //~^ ERROR late-bound type parameter not allowed on trait object types + todo!() +} + +fn main() {} diff --git a/tests/ui/traits/non_lifetime_binders/on-dyn.stderr b/tests/ui/traits/non_lifetime_binders/on-dyn.stderr new file mode 100644 index 000000000..95656f999 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/on-dyn.stderr @@ -0,0 +1,17 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/on-dyn.rs:3:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +error: late-bound type parameter not allowed on trait object types + --> $DIR/on-dyn.rs:8:30 + | +LL | fn foo() -> &'static dyn for<T> Test<T> { + | ^ + +error: aborting due to previous error; 1 warning emitted + diff --git a/tests/ui/traits/non_lifetime_binders/on-ptr.rs b/tests/ui/traits/non_lifetime_binders/on-ptr.rs new file mode 100644 index 000000000..0aaff52b6 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/on-ptr.rs @@ -0,0 +1,13 @@ +// Tests to make sure that we reject polymorphic fn ptrs. + +#![feature(non_lifetime_binders)] +//~^ WARN the feature `non_lifetime_binders` is incomplete + +fn foo() -> for<T> fn(T) { + //~^ ERROR late-bound type parameter not allowed on function pointer types + todo!() +} + +fn main() { + foo()(1i32); +} diff --git a/tests/ui/traits/non_lifetime_binders/on-ptr.stderr b/tests/ui/traits/non_lifetime_binders/on-ptr.stderr new file mode 100644 index 000000000..3b17f7697 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/on-ptr.stderr @@ -0,0 +1,17 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/on-ptr.rs:3:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +error: late-bound type parameter not allowed on function pointer types + --> $DIR/on-ptr.rs:6:17 + | +LL | fn foo() -> for<T> fn(T) { + | ^ + +error: aborting due to previous error; 1 warning emitted + diff --git a/tests/ui/traits/non_lifetime_binders/type-match-with-late-bound.rs b/tests/ui/traits/non_lifetime_binders/type-match-with-late-bound.rs new file mode 100644 index 000000000..5ff7089b9 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/type-match-with-late-bound.rs @@ -0,0 +1,14 @@ +// edition:2021 +// check-pass + +// Checks that test_type_match code doesn't ICE when predicates have late-bound types + +#![feature(non_lifetime_binders)] +//~^ WARN is incomplete and may not be safe to use + +async fn walk2<'a, T: 'a>(_: T) +where + for<F> F: 'a, +{} + +fn main() {} diff --git a/tests/ui/traits/non_lifetime_binders/type-match-with-late-bound.stderr b/tests/ui/traits/non_lifetime_binders/type-match-with-late-bound.stderr new file mode 100644 index 000000000..3609bed28 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/type-match-with-late-bound.stderr @@ -0,0 +1,11 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/type-match-with-late-bound.rs:6:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/traits/object/enforce-supertrait-projection.stderr b/tests/ui/traits/object/enforce-supertrait-projection.stderr index cbf093866..848b4e69a 100644 --- a/tests/ui/traits/object/enforce-supertrait-projection.stderr +++ b/tests/ui/traits/object/enforce-supertrait-projection.stderr @@ -16,7 +16,7 @@ note: required by a bound in `foo` --> $DIR/enforce-supertrait-projection.rs:15:8 | LL | fn foo<A, B, T: ?Sized>(x: T::A) -> B - | --- required by a bound in this + | --- required by a bound in this function LL | where LL | T: Trait<B = B>, | ^^^^^^^^^^^^ required by this bound in `foo` diff --git a/tests/ui/traits/object/vs-lifetime.rs b/tests/ui/traits/object/vs-lifetime.rs index 14ae67cff..d3e6c0b21 100644 --- a/tests/ui/traits/object/vs-lifetime.rs +++ b/tests/ui/traits/object/vs-lifetime.rs @@ -9,8 +9,8 @@ fn main() { let _: S<'static, dyn 'static +>; //~^ at least one trait is required for an object type let _: S<'static, 'static>; - //~^ ERROR this struct takes 1 lifetime argument but 2 lifetime arguments were supplied - //~| ERROR this struct takes 1 generic argument but 0 generic arguments were supplied + //~^ ERROR struct takes 1 lifetime argument but 2 lifetime arguments were supplied + //~| ERROR struct takes 1 generic argument but 0 generic arguments were supplied let _: S<dyn 'static +, 'static>; //~^ ERROR type provided when a lifetime was expected //~| ERROR at least one trait is required for an object type diff --git a/tests/ui/traits/object/vs-lifetime.stderr b/tests/ui/traits/object/vs-lifetime.stderr index 224465228..a69cd1408 100644 --- a/tests/ui/traits/object/vs-lifetime.stderr +++ b/tests/ui/traits/object/vs-lifetime.stderr @@ -4,7 +4,7 @@ error[E0224]: at least one trait is required for an object type LL | let _: S<'static, dyn 'static +>; | ^^^^^^^^^^^^^ -error[E0107]: this struct takes 1 lifetime argument but 2 lifetime arguments were supplied +error[E0107]: struct takes 1 lifetime argument but 2 lifetime arguments were supplied --> $DIR/vs-lifetime.rs:11:12 | LL | let _: S<'static, 'static>; @@ -18,7 +18,7 @@ note: struct defined here, with 1 lifetime parameter: `'a` LL | struct S<'a, T>(&'a u8, T); | ^ -- -error[E0107]: this struct takes 1 generic argument but 0 generic arguments were supplied +error[E0107]: struct takes 1 generic argument but 0 generic arguments were supplied --> $DIR/vs-lifetime.rs:11:12 | LL | let _: S<'static, 'static>; diff --git a/tests/ui/traits/suggest-deferences/issue-39029.stderr b/tests/ui/traits/suggest-deferences/issue-39029.stderr index 49e20c6a7..49105de3d 100644 --- a/tests/ui/traits/suggest-deferences/issue-39029.stderr +++ b/tests/ui/traits/suggest-deferences/issue-39029.stderr @@ -1,8 +1,8 @@ error[E0277]: the trait bound `NoToSocketAddrs: ToSocketAddrs` is not satisfied - --> $DIR/issue-39029.rs:16:37 + --> $DIR/issue-39029.rs:16:38 | LL | let _errors = TcpListener::bind(&bad); - | ----------------- ^^^^ the trait `ToSocketAddrs` is not implemented for `NoToSocketAddrs` + | ----------------- ^^^ the trait `ToSocketAddrs` is not implemented for `NoToSocketAddrs` | | | required by a bound introduced by this call | diff --git a/tests/ui/traits/test-2.rs b/tests/ui/traits/test-2.rs index 342928e88..ffb778a01 100644 --- a/tests/ui/traits/test-2.rs +++ b/tests/ui/traits/test-2.rs @@ -7,9 +7,9 @@ impl bar for u32 { fn dup(&self) -> u32 { *self } fn blah<X>(&self) {} } fn main() { 10.dup::<i32>(); - //~^ ERROR this associated function takes 0 generic arguments but 1 + //~^ ERROR method takes 0 generic arguments but 1 10.blah::<i32, i32>(); - //~^ ERROR this associated function takes 1 generic argument but 2 + //~^ ERROR method takes 1 generic argument but 2 (Box::new(10) as Box<dyn bar>).dup(); //~^ ERROR E0038 //~| ERROR E0038 diff --git a/tests/ui/traits/test-2.stderr b/tests/ui/traits/test-2.stderr index eaa20b0b4..6c0e8b8af 100644 --- a/tests/ui/traits/test-2.stderr +++ b/tests/ui/traits/test-2.stderr @@ -1,4 +1,4 @@ -error[E0107]: this associated function takes 0 generic arguments but 1 generic argument was supplied +error[E0107]: method takes 0 generic arguments but 1 generic argument was supplied --> $DIR/test-2.rs:9:8 | LL | 10.dup::<i32>(); @@ -6,13 +6,13 @@ LL | 10.dup::<i32>(); | | | expected 0 generic arguments | -note: associated function defined here, with 0 generic parameters +note: method defined here, with 0 generic parameters --> $DIR/test-2.rs:4:16 | LL | trait bar { fn dup(&self) -> Self; fn blah<X>(&self); } | ^^^ -error[E0107]: this associated function takes 1 generic argument but 2 generic arguments were supplied +error[E0107]: method takes 1 generic argument but 2 generic arguments were supplied --> $DIR/test-2.rs:11:8 | LL | 10.blah::<i32, i32>(); @@ -20,7 +20,7 @@ LL | 10.blah::<i32, i32>(); | | | expected 1 generic argument | -note: associated function defined here, with 1 generic parameter: `X` +note: method defined here, with 1 generic parameter: `X` --> $DIR/test-2.rs:4:39 | LL | trait bar { fn dup(&self) -> Self; fn blah<X>(&self); } diff --git a/tests/ui/traits/trait-or-new-type-instead.stderr b/tests/ui/traits/trait-or-new-type-instead.stderr index 4726b0668..6fd8a03fd 100644 --- a/tests/ui/traits/trait-or-new-type-instead.stderr +++ b/tests/ui/traits/trait-or-new-type-instead.stderr @@ -1,11 +1,8 @@ error[E0116]: cannot define inherent `impl` for a type outside of the crate where the type is defined --> $DIR/trait-or-new-type-instead.rs:1:1 | -LL | / impl<T> Option<T> { -LL | | -LL | | pub fn foo(&self) { } -LL | | } - | |_^ impl for type defined outside of crate. +LL | impl<T> Option<T> { + | ^^^^^^^^^^^^^^^^^ impl for type defined outside of crate. | = note: define and implement a trait or new type instead diff --git a/tests/ui/traits/trait-upcasting/multiple_supertrait_upcastable.rs b/tests/ui/traits/trait-upcasting/multiple_supertrait_upcastable.rs new file mode 100644 index 000000000..3c6ab86e4 --- /dev/null +++ b/tests/ui/traits/trait-upcasting/multiple_supertrait_upcastable.rs @@ -0,0 +1,10 @@ +#![feature(multiple_supertrait_upcastable)] +#![deny(multiple_supertrait_upcastable)] + +trait A {} +trait B {} + +trait C: A + B {} +//~^ ERROR `C` is object-safe and has multiple supertraits + +fn main() {} diff --git a/tests/ui/traits/trait-upcasting/multiple_supertrait_upcastable.stderr b/tests/ui/traits/trait-upcasting/multiple_supertrait_upcastable.stderr new file mode 100644 index 000000000..ad80a009e --- /dev/null +++ b/tests/ui/traits/trait-upcasting/multiple_supertrait_upcastable.stderr @@ -0,0 +1,14 @@ +error: `C` is object-safe and has multiple supertraits + --> $DIR/multiple_supertrait_upcastable.rs:7:1 + | +LL | trait C: A + B {} + | ^^^^^^^^^^^^^^ + | +note: the lint level is defined here + --> $DIR/multiple_supertrait_upcastable.rs:2:9 + | +LL | #![deny(multiple_supertrait_upcastable)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/tests/ui/traits/unsend-future.rs b/tests/ui/traits/unsend-future.rs new file mode 100644 index 000000000..fbbc07b11 --- /dev/null +++ b/tests/ui/traits/unsend-future.rs @@ -0,0 +1,21 @@ +// edition:2021 + +// issue 108897 +trait Handler {} +impl<F, Fut> Handler for F +where + Fut: Send, + F: FnOnce() -> Fut, +{} + +fn require_handler<H: Handler>(h: H) {} + +async fn handler() { + let a = &1 as *const i32; + async {}.await; +} + +fn main() { + require_handler(handler) + //~^ ERROR future cannot be sent between threads safely +} diff --git a/tests/ui/traits/unsend-future.stderr b/tests/ui/traits/unsend-future.stderr new file mode 100644 index 000000000..4aaa7c4a9 --- /dev/null +++ b/tests/ui/traits/unsend-future.stderr @@ -0,0 +1,24 @@ +error: future cannot be sent between threads safely + --> $DIR/unsend-future.rs:19:21 + | +LL | require_handler(handler) + | ^^^^^^^ future returned by `handler` is not `Send` + | + = help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `*const i32` +note: future is not `Send` as this value is used across an await + --> $DIR/unsend-future.rs:15:13 + | +LL | let a = &1 as *const i32; + | - has type `*const i32` which is not `Send` +LL | async {}.await; + | ^^^^^^ await occurs here, with `a` maybe used later +LL | } + | - `a` is later dropped here +note: required by a bound in `require_handler` + --> $DIR/unsend-future.rs:11:23 + | +LL | fn require_handler<H: Handler>(h: H) {} + | ^^^^^^^ required by this bound in `require_handler` + +error: aborting due to previous error + diff --git a/tests/ui/traits/vtable/issue-97381.stderr b/tests/ui/traits/vtable/issue-97381.stderr index c4f8294e2..89360c44e 100644 --- a/tests/ui/traits/vtable/issue-97381.stderr +++ b/tests/ui/traits/vtable/issue-97381.stderr @@ -1,6 +1,9 @@ error[E0505]: cannot move out of `v` because it is borrowed --> $DIR/issue-97381.rs:26:14 | +LL | let v = [1, 2, 3] + | - binding `v` declared here +... LL | let el = &v[0]; | - borrow of `v` occurs here LL | |