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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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compiler/rustc_error_messages/locales/en-US/lint.ftl
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@ -100,6 +100,8 @@ lint_cstring_ptr = getting the inner pointer of a temporary `CString`
.note = pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
.help = for more information, see https://doc.rust-lang.org/reference/destructors.html
lint_multple_supertrait_upcastable = `{$ident}` is object-safe and has multiple supertraits
lint_identifier_non_ascii_char = identifier contains non-ASCII characters
lint_identifier_uncommon_codepoints = identifier contains uncommon Unicode codepoints