Change java_lang_Throwable::create_initialization_error to create a '…

…char *' message without using a Symbol.

src/hotspot/share/classfile/javaClasses.cpp

@@ -2760,16 +2760,25 @@ Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Han
   // symbolic stacktrace of 'throwable'.
   assert(throwable.not_null(), "shouldn't be");
 
-  // Now create the message from the original exception and thread name.
-  Symbol* message = java_lang_Throwable::detail_message(throwable());
   ResourceMark rm(current);
+  char *message = nullptr;
+  {
+    PreserveExceptionMark pm(current);
+    oop detailed_message = java_lang_Throwable::message(throwable());
+    Handle message_handle(current, detailed_message);
+    if (detailed_message != nullptr) {
+      message = java_lang_String::as_platform_dependent_str(message_handle, current);
+    }
+  }
+
+  // Now create the message from the original exception and thread name.
   stringStream st;
   st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
              message == nullptr ? "" : ":");
   if (message == nullptr) {
     st.print("[in thread \"%s\"]", current->name());
   } else {
-    st.print("%s [in thread \"%s\"]", message->as_C_string(), current->name());
+    st.print("%s [in thread \"%s\"]", message, current->name());
   }
 
   Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();