--- node-v24.0.0/src/node_process_object.cc.orig
+++ node-v24.0.0/src/node_process_object.cc
@@ -73,7 +73,11 @@
 
 static void GetParentProcessId(Local<Name> property,
                                const PropertyCallbackInfo<Value>& info) {
-  info.GetReturnValue().Set(uv_os_getppid());
+#if defined(__sun__)
+   info.GetReturnValue().Set(static_cast<int32_t>(uv_os_getppid()));
+#else
+   info.GetReturnValue().Set(uv_os_getppid());
+#endif
 }
 
 static void SetVersions(Isolate* isolate, Local<Object> versions) {