Matthias Krüger e63586f386 Rollup merge of #109957 - fmease:fix-109905, r=petrochenkov ... diagnostics: account for self type when looking for source of unsolved type variable Fixes #109905. When searching for the source of an unsolved infer var inside of a list of generic args, we look through the `tcx.generics_of(…).own_substs(…)` which *skips* the self type if present. However, the computed `argument_index` is later[^1] used to index into `tcx.generics_of(…).params` which may still contain the self type. In such case, we are off by one when indexing into the parameters. From now on, we account for this immediately after calling `own_substs` which keeps things local. This also fixes the wrong output in the preexisting UI test `inference/need_type_info/concrete-impl.rs` which was overlooked. It used to claim that the *type of type parameter `Self`* couldn't be inferred in `<Struct as Ambiguous<_>>::method()` which of course isn't true: `Self` equals `Struct` here, `A` couldn't be inferred. `@rustbot` label A-diagnostics [^1]: f98a271814/compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs (L471)		2023-04-07 00:00:24 +02:00
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src	Rollup merge of #109957 - fmease:fix-109905, r=petrochenkov	2023-04-07 00:00:24 +02:00
Cargo.toml	remove unused imports	2023-02-06 17:40:18 +03:00
messages.ftl	Simplify message paths	2023-03-11 22:51:57 +01:00