[TypeChecker] Disallow if #unavailable to produce different opaque …
#42456
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…result Only `if #available` conditions should be allowed to produce a different underlying type for opaque result to support backward deployment.
hborla
approved these changes
Apr 19, 2022
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@swift-ci please smoke test Windows platform |
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…result
Only
if #availableconditions should be allowed to produce a differentunderlying type for opaque result to support backward deployment.