--- old/src/hotspot/share/include/jvm.h	2019-10-28 18:02:44.991842300 +0000
+++ new/src/hotspot/share/include/jvm.h	2019-10-28 18:02:43.676643200 +0000
@@ -1078,7 +1078,7 @@
  *
  */
 
-typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
+typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv *env, char *str);
 
 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
                                         JVM_ACC_FINAL | \