blob: 4c6e893c1729206930d6095793f4f32ddb725d2b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// Regression test for #90400,
// taken from https://github.com/rust-lang/rust/issues/90400#issuecomment-954927836
#![feature(type_alias_impl_trait)]
trait Bar {
fn bar(&self);
}
trait Baz {
fn baz(&self);
}
trait Foo {
type FooFn<B>: Baz;
fn foo<B: Bar>(&self, bar: B) -> Self::FooFn<B>;
}
struct MyFoo;
impl Foo for MyFoo {
type FooFn<B> = impl Baz;
fn foo<B: Bar>(&self, bar: B) -> Self::FooFn<B> {
MyBaz(bar) //~ ERROR: the trait bound `B: Bar` is not satisfied
}
}
struct MyBaz<B: Bar>(B);
impl<B: Bar> Baz for MyBaz<B> {
fn baz(&self) {}
}
fn main() {
let boom: <MyFoo as Foo>::FooFn<u32> = unsafe { core::mem::zeroed() };
boom.baz();
}
|