--- old/src/hotspot/share/classfile/javaClasses.cpp	2019-10-29 14:08:37.178430300 +0000
+++ new/src/hotspot/share/classfile/javaClasses.cpp	2019-10-29 14:08:34.896543300 +0000
@@ -387,14 +387,20 @@
 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
   assert(str != NULL, "bad arguments");
 
-  typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
+  typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
   static to_java_string_fn_t _to_java_string_fn = NULL;
 
   if (_to_java_string_fn == NULL) {
     void *lib_handle = os::native_java_library();
-    _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
+    _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
+#if defined(_WIN32) && !defined(_WIN64)
     if (_to_java_string_fn == NULL) {
-      fatal("NewStringPlatform missing");
+      // On 32 bit Windows, also try __stdcall decorated name
+      _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
+    }
+#endif
+    if (_to_java_string_fn == NULL) {
+      fatal("JNU_NewStringPlatform missing");
     }
   }
 
--- old/src/hotspot/share/include/jvm.h	2019-10-29 14:08:56.366695800 +0000
+++ new/src/hotspot/share/include/jvm.h	2019-10-29 14:08:54.180338100 +0000
@@ -1073,13 +1073,6 @@
     method_size_info main;     /* used everywhere else */
 } class_size_info;
 
-/*
- * Functions defined in libjava.so to perform string conversions.
- *
- */
-
-typedef jstring (*to_java_string_fn_t)(JNIEnv *env, char *str);
-
 #define JVM_RECOGNIZED_CLASS_MODIFIERS (JVM_ACC_PUBLIC | \
                                         JVM_ACC_FINAL | \
                                         JVM_ACC_SUPER | \
--- old/src/java.base/share/native/libjava/jni_util.c	2019-10-29 14:09:13.797974000 +0000
+++ new/src/java.base/share/native/libjava/jni_util.c	2019-10-29 14:09:11.505301500 +0000
@@ -791,13 +791,6 @@
     CHECK_NULL(String_value_ID);
 }
 
-// This alias is used for compatibility with 32 bit Windows
-JNIEXPORT jstring
-NewStringPlatform(JNIEnv *env, const char *str)
-{
-    return JNU_NewStringPlatform(env, str);
-}
-
 JNIEXPORT jstring JNICALL
 JNU_NewStringPlatform(JNIEnv *env, const char *str)
 {
--- old/src/java.base/share/native/libjava/jni_util.h	2019-10-29 14:09:31.673441100 +0000
+++ new/src/java.base/share/native/libjava/jni_util.h	2019-10-29 14:09:29.433855000 +0000
@@ -93,9 +93,6 @@
 JNU_ThrowIOExceptionWithLastError(JNIEnv *env, const char *defaultDetail);
 
 /* Convert between Java strings and i18n C strings */
-JNIEXPORT jstring
-NewStringPlatform(JNIEnv *env, const char *str);
-
 JNIEXPORT const char *
 GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy);