9be9b5e09a
Split implied and super predicate queries, then allow elaborator to filter only supertraits Split the `super_predicates_of` query into a new `implied_predicates_of` query. The former now only returns the *real* supertraits of a trait alias, and the latter now returns the implied predicates (which include all of the `where` clauses of the trait alias). The behavior of these queries is identical for regular traits. Now that the two queries are split, we can add a new filter method to the elaborator, `filter_only_self()`, which can be used in instances that we need only the *supertrait* predicates, such as during the elaboration used in closure signature deduction. This toggles the usage of `super_predicates_of` instead of `implied_predicates_of` during elaboration of a trait predicate. This supersedes #104745, and fixes the four independent bugs identified in that PR. Fixes #104719 Fixes #106238 Fixes #110023 Fixes #109514 r? types |
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