Merge pull request #840 from nkcsgexi/forgiving-platform-kind

Be forgiving for malformed SDK info file. NFC

Author: nkcsgexi

Sources/SwiftDriver/Jobs/PrebuiltModulesJob.swift

@@ -249,6 +249,8 @@ public struct SDKPrebuiltModuleInputsCollector {
       return "arm64-apple-tvos\(version)"
     case .appletvsimulator:
       return "arm64-apple-tvos\(version)-simulator"
+    case .unknown:
+      fatalError("unknown platform kind")
     }
   }
 

Sources/SwiftDriver/Toolchains/DarwinToolchain.swift

@@ -248,6 +248,7 @@ public final class DarwinToolchain: Toolchain {
       case watchsimulator
       case appletvos
       case appletvsimulator
+      case unknown
     }
 
     struct VersionMap: Decodable {
@@ -289,7 +290,7 @@ public final class DarwinToolchain: Toolchain {
       self.versionString = try keyedContainer.decode(String.self, forKey: .version)
       self.canonicalName = try keyedContainer.decode(String.self, forKey: .canonicalName)
       let verRange = canonicalName.range(of: versionString)!
-      self.platformKind = SDKPlatformKind(rawValue: String(canonicalName[..<verRange.lowerBound]))!
+      self.platformKind = SDKPlatformKind(rawValue: String(canonicalName[..<verRange.lowerBound])) ?? SDKPlatformKind.unknown
       guard let version = try? Version(versionString: versionString, usesLenientParsing: true) else {
         throw DecodingError.dataCorruptedError(forKey: .version,
                                                in: keyedContainer,