Parse: Diagnose empty version numbers #72449
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The compiler treats version tuples that are all zeros as empty, or the same as not having a version. Diagnose attempts to specify all-zeroes versions in attributes and availability queries to prevent surprising behavior. Resolves rdar://124661151
tshortli
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hborla,
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xedin
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@swift-ci please test |
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The compiler treats version tuples that are all zeros as empty, or the same as not having a version. Diagnose attempts to specify all-zeroes versions in attributes and availability queries to prevent surprising behavior. The diagnostic is staged as a warning before Swift 6 to preserve source compatibility.
Resolves rdar://124661151