Commits
Jordan Rose committed 5ffb151f77c
[ClangImporter] Predefine __swift__ in imported (Obj)C code. (#4510) This macro expands to a numeric value representing the current Swift language version; for Swift 3.1.2, it would be 30102. See discussion in https://lists.swift.org/pipermail/swift-dev/Week-of-Mon-20160822/002754.html. rdar://problem/26921435