[Sema] Still use the current minimum deployment target as fallback

swiftlang · Oct 9, 2020 · c79d5cf · c79d5cf
1 parent 39ee591
commit c79d5cf
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/lib/Sema/TypeCheckAvailability.cpp b/lib/Sema/TypeCheckAvailability.cpp
@@ -720,6 +720,14 @@ TypeChecker::overApproximateAvailabilityAtLocation(SourceLoc loc,
     }
   }
 
+  // If we still don't have an introduction version, use the current deployment
+  // target. This covers cases where an inlinable function and its parent
+  // contexts don't have explicit availability attributes.
+  if (!OverApproximateContext.getOSVersion().hasLowerEndpoint()) {
+    auto currentOS = AvailabilityContext::forDeploymentTarget(Context);
+    OverApproximateContext.constrainWith(currentOS);
+  }
+
   return OverApproximateContext;
 }