src/macosx/native/sun/awt/AWTEvent.m

*** 381,390 ****
--- 381,391 ----
  
  static unichar NsGetDeadKeyChar(unsigned short keyCode)
  {
      TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource();
      CFDataRef uchr = (CFDataRef)TISGetInputSourceProperty(currentKeyboard, kTISPropertyUnicodeKeyLayoutData);
+     if (uchr == nil) { return; }    
      const UCKeyboardLayout *keyboardLayout = (const UCKeyboardLayout*)CFDataGetBytePtr(uchr);
      // Carbon modifiers should be used instead of NSEvent modifiers
      UInt32 modifierKeyState = (GetCurrentEventKeyModifiers() >> 8) & 0xFF;
  
      if (keyboardLayout) {