@nikitonsky Finally the leak from the Swift source code has been confirmed:
https://github.com/swiftlang/swift/blob/55189bae8e5516967998000deaa0e138a1c9f4fa/docs/LibraryEvolutionManifesto.md?plain=1#L46
GitHubswift/docs/LibraryEvolutionManifesto.md at 55189bae8e5516967998000deaa0e138a1c9f4fa · swiftlang/swiftThe Swift Programming Language. Contribute to swiftlang/swift development by creating an account on GitHub.