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Matthias Krüger 6f8fb911ad
Rollup merge of #98582 - oli-obk:unconstrained_opaque_type, r=estebank 
Allow destructuring opaque types in their defining scopes

fixes #96572

Before this PR, the following code snippet failed with an incomprehensible error, and similar code just ICEd in mir borrowck.

```rust
    type T = impl Copy;
    let foo: T = (1u32, 2u32);
    let (a, b) = foo;
```

The problem was that the last line created MIR projections of the form `foo.0` and `foo.1`, but `foo`'s type is `T`, which doesn't have fields (only its hidden type does). But the pattern supplies enough type information (a tuple of two different inference types) to bind a hidden type.
2022-07-16 22:30:47 +02:00
..
benches mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
src Rollup merge of #98582 - oli-obk:unconstrained_opaque_type, r=estebank 2022-07-16 22:30:47 +02:00
Cargo.toml Update smallvec to 1.8.1. 2022-06-27 08:48:55 +10:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00

README.md

For more information about how rustc works, see the rustc dev guide.