diff options
9 files changed, 91 insertions, 4 deletions
diff --git a/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs b/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs index b144b267fbb..f39bf4aeb29 100644 --- a/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs +++ b/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs @@ -1,4 +1,3 @@ - #![feature(type_alias_impl_trait)] type Foo<'a, 'b> = impl std::fmt::Debug; @@ -7,4 +6,4 @@ fn foo<'x, 'y>(i: &'x i32, j: &'y i32) -> (Foo<'x, 'y>, Foo<'y, 'x>) { (i, i) //~^ ERROR concrete type differs from previous } -fn main() {} \ No newline at end of file +fn main() {} diff --git a/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr b/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr index 2499d3cbca6..49d08dda9f9 100644 --- a/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr +++ b/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr @@ -1,11 +1,11 @@ error: concrete type differs from previous defining opaque type use - --> $DIR/multiple-def-uses-in-one-fn-lifetimes.rs:6:1 + --> $DIR/multiple-def-uses-in-one-fn-lifetimes.rs:5:1 | LL | fn foo<'x, 'y>(i: &'x i32, j: &'y i32) -> (Foo<'x, 'y>, Foo<'y, 'x>) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `&'a i32`, got `&'b i32` | note: previous use here - --> $DIR/multiple-def-uses-in-one-fn-lifetimes.rs:6:1 + --> $DIR/multiple-def-uses-in-one-fn-lifetimes.rs:5:1 | LL | fn foo<'x, 'y>(i: &'x i32, j: &'y i32) -> (Foo<'x, 'y>, Foo<'y, 'x>) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/src/test/ui/type-alias-impl-trait/nested.rs b/src/test/ui/type-alias-impl-trait/nested.rs new file mode 100644 index 00000000000..4cdfbf08041 --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/nested.rs @@ -0,0 +1,17 @@ +#![feature(type_alias_impl_trait)] + +type Foo = impl std::fmt::Debug; +type Bar = impl Trait<Foo>; + +trait Trait<T> {} + +impl<T, U> Trait<T> for U {} + +fn bar() -> Bar { + 42 +} + +fn main() { + println!("{:?}", bar()); + //~^ ERROR `impl Trait<Opaque(DefId(0:4 ~ nested[14f6]::Foo::{opaque#0}), [])>` doesn't implement `Debug` +} diff --git a/src/test/ui/type-alias-impl-trait/nested.stderr b/src/test/ui/type-alias-impl-trait/nested.stderr new file mode 100644 index 00000000000..43bdd73454b --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/nested.stderr @@ -0,0 +1,12 @@ +error[E0277]: `impl Trait<Opaque(DefId(0:4 ~ nested[14f6]::Foo::{opaque#0}), [])>` doesn't implement `Debug` + --> $DIR/nested.rs:15:22 + | +LL | println!("{:?}", bar()); + | ^^^^^ `impl Trait<Opaque(DefId(0:4 ~ nested[14f6]::Foo::{opaque#0}), [])>` cannot be formatted using `{:?}` because it doesn't implement `Debug` + | + = help: the trait `Debug` is not implemented for `impl Trait<Opaque(DefId(0:4 ~ nested[14f6]::Foo::{opaque#0}), [])>` + = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info) + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/src/test/ui/type-alias-impl-trait/self-referential-2.rs b/src/test/ui/type-alias-impl-trait/self-referential-2.rs new file mode 100644 index 00000000000..e9ace992c8b --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/self-referential-2.rs @@ -0,0 +1,10 @@ +#![feature(type_alias_impl_trait)] + +type Foo = impl std::fmt::Debug; +type Bar = impl PartialEq<Foo>; + +fn bar() -> Bar { + 42_i32 //~ ERROR can't compare `i32` with `impl Debug` +} + +fn main() {} diff --git a/src/test/ui/type-alias-impl-trait/self-referential-2.stderr b/src/test/ui/type-alias-impl-trait/self-referential-2.stderr new file mode 100644 index 00000000000..2c3630dc394 --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/self-referential-2.stderr @@ -0,0 +1,11 @@ +error[E0277]: can't compare `i32` with `impl Debug` + --> $DIR/self-referential-2.rs:7:5 + | +LL | 42_i32 + | ^^^^^^ no implementation for `i32 == impl Debug` + | + = help: the trait `PartialEq<impl Debug>` is not implemented for `i32` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/src/test/ui/type-alias-impl-trait/self-referential-3.rs b/src/test/ui/type-alias-impl-trait/self-referential-3.rs new file mode 100644 index 00000000000..d40715717d4 --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/self-referential-3.rs @@ -0,0 +1,14 @@ +// run-pass +#![feature(type_alias_impl_trait)] + +type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>> + std::fmt::Debug; + +fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> { + i +} + +fn main() { + let meh = 42; + let muh = 42; + assert_eq!(bar(&meh), bar(&muh)); +} diff --git a/src/test/ui/type-alias-impl-trait/self-referential.rs b/src/test/ui/type-alias-impl-trait/self-referential.rs new file mode 100644 index 00000000000..d5085b9419e --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/self-referential.rs @@ -0,0 +1,13 @@ +#![feature(type_alias_impl_trait)] + +type Bar<'a, 'b> = impl PartialEq<Bar<'b, 'a>> + std::fmt::Debug; + +fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> { + i //~ ERROR can't compare `&i32` with `impl PartialEq<Opaque +} + +fn main() { + let meh = 42; + let muh = 69; + assert_eq!(bar(&meh), bar(&meh)); +} diff --git a/src/test/ui/type-alias-impl-trait/self-referential.stderr b/src/test/ui/type-alias-impl-trait/self-referential.stderr new file mode 100644 index 00000000000..8bc2cb9b05c --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/self-referential.stderr @@ -0,0 +1,11 @@ +error[E0277]: can't compare `&i32` with `impl PartialEq<Opaque(DefId(0:6 ~ self_referential[5b7d]::Bar::{opaque#0}), [ReFree(DefId(0:7 ~ self_referential[5b7d]::bar), BrNamed(DefId(0:8 ~ self_referential[5b7d]::bar::'a), 'a)), ReEarlyBound(0, 'b)])> + Debug` + --> $DIR/self-referential.rs:6:5 + | +LL | i + | ^ no implementation for `&i32 == impl PartialEq<Opaque(DefId(0:6 ~ self_referential[5b7d]::Bar::{opaque#0}), [ReFree(DefId(0:7 ~ self_referential[5b7d]::bar), BrNamed(DefId(0:8 ~ self_referential[5b7d]::bar::'a), 'a)), ReEarlyBound(0, 'b)])> + Debug` + | + = help: the trait `PartialEq<impl PartialEq<Opaque(DefId(0:6 ~ self_referential[5b7d]::Bar::{opaque#0}), [ReFree(DefId(0:7 ~ self_referential[5b7d]::bar), BrNamed(DefId(0:8 ~ self_referential[5b7d]::bar::'a), 'a)), ReEarlyBound(0, 'b)])> + Debug>` is not implemented for `&i32` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. |