Properly avoid Any in thunks we're emitting

Author: ktoso

Samples/SwiftKitSampleApp/src/main/java/com/example/swift/HelloJava2Swift.java

@@ -46,11 +46,11 @@ static void examples() {
 
         MySwiftClass obj = new MySwiftClass(2222, 7777);
 
-        SwiftKit.retain(obj.$memorySegment());
-        System.out.println("[java] obj ref count = " + SwiftKit.retainCount(obj.$memorySegment()));
+//        SwiftKit.retain(obj.$memorySegment());
+//        System.out.println("[java] obj ref count = " + SwiftKit.retainCount(obj.$memorySegment()));
 
         obj.voidMethod();
-        obj.takeIntMethod(42);
+//        obj.takeIntMethod(42);
 
         System.out.println("DONE.");
     }

Sources/JExtractSwift/SwiftThunkTranslator.swift

@@ -71,8 +71,8 @@ struct SwiftThunkTranslator {
     return
       """
       @_cdecl("\(raw: funcName)")
-      public func \(raw: funcName)() -> Any /* Any.Type */ {
-        return \(raw: nominal.swiftTypeName).self
+      public func \(raw: funcName)() -> UnsafeMutableRawPointer /* Any.Type */ {
+        unsafeBitCast(\(raw: nominal.swiftTypeName).self, to: UnsafeMutableRawPointer.self)
       }
       """
   }
@@ -89,9 +89,10 @@ struct SwiftThunkTranslator {
       [
         """
         @_cdecl("\(raw: thunkName)")
-        public func \(raw: thunkName)(\(raw: st.renderSwiftParamDecls(function, paramPassingStyle: nil))) -> Any /* \(raw: parent.swiftTypeName) */ {
+        public func \(raw: thunkName)(\(raw: st.renderSwiftParamDecls(function, paramPassingStyle: nil))) -> UnsafeMutableRawPointer /* \(raw: parent.swiftTypeName) */ {
           print("[swift] init class \(raw: parent.swiftTypeName)")
-          return \(raw: parent.swiftTypeName)(\(raw: st.renderForwardSwiftParams(function, paramPassingStyle: nil)))
+          let _self = \(raw: parent.swiftTypeName)(\(raw: st.renderForwardSwiftParams(function, paramPassingStyle: nil)))
+          return unsafeBitCast(_self, to: UnsafeMutableRawPointer.self)
         }
         """
       ]