src/java.desktop/unix/native/libawt_xawt/awt/swing_GTKEngine.c

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -26,11 +26,11 @@
 #include <stdlib.h>
 #include "gtk_interface.h"
 #include "com_sun_java_swing_plaf_gtk_GTKEngine.h"
 
 /* Static buffer for conversion from java.lang.String to UTF-8 */
-static char conversionBuffer[CONV_BUFFER_SIZE];
+static char conversionBuffer[(CONV_BUFFER_SIZE - 1) * 3 + 1];
 
 const char *getStrFor(JNIEnv *env, jstring val)
 {
     int length = (*env)->GetStringLength(env, val);
     if (length > CONV_BUFFER_SIZE-1)