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Add exhaustive location checking for doc_alias
attribute
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6b37a79581
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@ -619,10 +619,30 @@ impl CheckAttrVisitor<'_> {
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}
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// we check the validity of params elsewhere
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Target::Param => return false,
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Target::Expression => Some("expression"),
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Target::Statement => Some("statement"),
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Target::Arm => Some("match arm"),
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_ => None,
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Target::Expression | Target::Statement | Target::Arm => Some(target.name()),
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Target::ExternCrate
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| Target::Use
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| Target::Static
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| Target::Const
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| Target::Fn
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| Target::Closure
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| Target::Mod
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| Target::GlobalAsm
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| Target::TyAlias
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| Target::OpaqueTy
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| Target::Enum
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| Target::Variant
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| Target::Struct
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| Target::Field
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| Target::Union
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| Target::Trait
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| Target::TraitAlias
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| Target::Method(..)
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| Target::ForeignFn
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| Target::ForeignStatic
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| Target::ForeignTy
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| Target::GenericParam(..)
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| Target::MacroDef => None,
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} {
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tcx.sess.emit_err(errors::DocAliasBadLocation { span, attr_str, location });
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return false;
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