Index: lldb/trunk/source/Plugins/Platform/MacOSX/PlatformDarwin.h
===================================================================
--- lldb/trunk/source/Plugins/Platform/MacOSX/PlatformDarwin.h
+++ lldb/trunk/source/Plugins/Platform/MacOSX/PlatformDarwin.h
@@ -85,7 +85,7 @@
   static std::tuple<llvm::VersionTuple, llvm::StringRef>
   ParseVersionBuildDir(llvm::StringRef str);
 
-  enum class SDKType {
+  enum SDKType : unsigned {
     MacOSX = 0,
     iPhoneSimulator,
     iPhoneOS,
Index: lldb/trunk/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
===================================================================
--- lldb/trunk/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
+++ lldb/trunk/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
@@ -1402,10 +1402,10 @@
   if (last_path_component) {
     const llvm::StringRef sdk_name = last_path_component.GetStringRef();
 
-    if (!sdk_name.startswith(sdk_strings[(int)desired_type]))
+    if (!sdk_name.startswith(sdk_strings[desired_type]))
       return false;
     auto version_part =
-        sdk_name.drop_front(strlen(sdk_strings[(int)desired_type]));
+        sdk_name.drop_front(strlen(sdk_strings[desired_type]));
     version_part.consume_back(".sdk");
 
     llvm::VersionTuple version;