9108907a18
Normalize before computing ConstArgHasType goal in new solver This is a fix for rust-lang/rust#139905. See the description I left in the test. I chose to fix this by normalizing the type before matching on its `.kind()` in `compute_const_arg_has_type_goal` (since it feels somewhat consistent with how we normalize types before assembling their candidates, for example); however, there are several other solutions that come to mind for fixing this ICE: 1. (this solution) 2. Giving `ConstKind::Error` a proper type, like `ConstKind::Value`, so that consts don't go from failing to passing `ConstArgHasType` goals after normalization (i.e. `UNEVALUATED` would normalize into a `ConstKind::Error(_, bool)` type rather than losing its type altogether). 3. Just suppressing the errors and accepting the fact that goals can go from fail->pass after normalization. Thoughts? Happy to discuss this fix further. r? `@BoxyUwU` |
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