[cxx-interop] Fix namespace lookup #58659
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If a namespace has redecls in different modules, Swift sometimes picked a redecl which is not visible from the requested module, and wrongly removed the namespace from lookup results. This resulted in errors like this: ``` *** DESERIALIZATION FAILURE *** Could not deserialize type for 'init(cxxString:)' Caused by: top-level value not found (std) Cross-reference to module '__ObjC' ... std ```
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We'll need one more lookup fix before we can properly test this. This is a requirement for #58452. |
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@swift-ci please smoke test |
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If a namespace has redecls in different modules, Swift sometimes picked a redecl which is not visible from the requested module, and wrongly removed the namespace from lookup results.
This resulted in errors like this: