15ef5f5523
Register obligations during path inference Fixes #14635 When we infer path expressions that resolve to some generic item, we need to consider their generic bounds. For example, when we resolve a path `Into::into` to `fn into<?0, ?1>` (note that `?0` is the self type of trait ref), we should register an obligation `?0: Into<?1>` or else their relationship would be lost. Relevant part in rustc is [`add_required_obligations_with_code()`] that's called in [`instantiate_value_path()`]. [`instantiate_value_path()`]:3462f79e94/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs (L1052)[`add_required_obligations_with_code()`]:3462f79e94/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs (L1411)
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