diff options
Diffstat (limited to 'tests/ui/associated-types/associated-types-project-from-hrtb-in-trait-method.rs')
-rw-r--r-- | tests/ui/associated-types/associated-types-project-from-hrtb-in-trait-method.rs | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/tests/ui/associated-types/associated-types-project-from-hrtb-in-trait-method.rs b/tests/ui/associated-types/associated-types-project-from-hrtb-in-trait-method.rs new file mode 100644 index 000000000..0a1b29de1 --- /dev/null +++ b/tests/ui/associated-types/associated-types-project-from-hrtb-in-trait-method.rs @@ -0,0 +1,38 @@ +#![allow(dead_code)] +// run-rustfix +// Check projection of an associated type out of a higher-ranked trait-bound +// in the context of a method definition in a trait. + +pub trait Foo<T> { + type A; + + fn get(&self, t: T) -> Self::A; +} + +trait SomeTrait<I : for<'x> Foo<&'x isize>> { + fn some_method(&self, arg: I::A); + //~^ ERROR cannot use the associated type of a trait with uninferred generic parameters +} + +trait AnotherTrait<I : for<'x> Foo<&'x isize>> { + fn some_method(&self, arg: <I as Foo<&isize>>::A); +} + +trait YetAnotherTrait<I : for<'x> Foo<&'x isize>> { + fn some_method<'a>(&self, arg: <I as Foo<&'a isize>>::A); +} + +trait Banana<'a> { + type Assoc: Default; +} + +struct Peach<X>(std::marker::PhantomData<X>); + +impl<X: for<'a> Banana<'a>> Peach<X> { + fn mango(&self) -> X::Assoc { + //~^ ERROR cannot use the associated type of a trait with uninferred generic parameters + Default::default() + } +} + +pub fn main() {} |