[5.5]Sema: allow @_originallyDefinedIn to specify identical version numbers as @available. #39815
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…s as @available. rdar://84425205
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@swift-ci please test |
tkremenek
approved these changes
Oct 20, 2021
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Description: We used to require @_originallyDefinedIn to specify strictly greater version numbers than @available attributes. However, this seems to block a use case where we only use the original module name for mangling while skipping emitting linker directives as $ld$previous.
Risk: Very Low
Testing: PR testing, CI, new tests
Original PR: #39813
Radar: rdar://84425205