Auto merge of #112422 - aliemjay:implied-bounds-placeholders, r=lcnr

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ignore implied bounds with placeholders

given the following code:
```rust
trait Trait {
    type Ty<'a> where Self: 'a;
}

impl<T> Trait for T {
    type Ty<'a> = () where Self: 'a;
}

struct Foo<T: Trait>(T)
where
    for<'x> T::Ty<'x>: Sized;
```

when computing the implied bounds from `Foo<X>` we incorrectly get the bound `X: !x` from the normalization of ` for<'x> <X as Trait>::Ty::<'x>: Sized`. This is a a known bug! we shouldn't use the constraints that arise from normalization as implied bounds. See #109628.

Ignore these bounds for now. This should prevent later ICEs.

Fixes #112250
Fixes #107409

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bors 2023-11-17 12:16:53 +00:00

parent 2bf0a30e6b a501646569

commit 12a5fdd38d

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

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