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Auto merge of #106253 - nbdd0121:upcast, r=compiler-errors

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Skip possible where_clause_object_safety lints when checking `multiple_supertrait_upcastable`

Fix #106247

To achieve this, I lifted the `WhereClauseReferencesSelf` out from `object_safety_violations` and move it into `is_object_safe` (which is changed to a new query).

cc `@dtolnay`
r? `@compiler-errors`
This commit is contained in:
bors 2023-01-29 10:20:25 +00:00
commit d117135f5a
26 changed files with 219 additions and 28 deletions
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3
compiler/rustc_middle/src/query/mod.rs
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@ -1274,6 +1274,9 @@ rustc_queries! {
query object_safety_violations(trait_id: DefId) -> &'tcx [traits::ObjectSafetyViolation] {
desc { |tcx| "determining object safety of trait `{}`", tcx.def_path_str(trait_id) }
}
query check_is_object_safe(trait_id: DefId) -> bool {
desc { |tcx| "checking if trait `{}` is object safe", tcx.def_path_str(trait_id) }
}
/// Gets the ParameterEnvironment for a given item; this environment
/// will be in "user-facing" mode, meaning that it is suitable for