From ba3a92a779f7adcf655b7e45b40ee5b0cb79bc8b Mon Sep 17 00:00:00 2001
From: Slaven Rezic <slaven@rezic.de>
Date: Fri, 14 Mar 2014 16:00:05 +0100
Subject: [PATCH] no segfaults if Tk::MainWindow::Create was called without
 args

However, this case never happened in real life, as this function was
not supposed to be used directly anyway.
---
 tkGlue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tkGlue.c b/tkGlue.c
index 57f0bca2..ae595bfb 100644
--- a/tkGlue.c
+++ b/tkGlue.c
@@ -2370,7 +2370,7 @@ XS(XS_Tk__MainWindow_Create)
  STRLEN na;
  Tcl_Interp *interp = Tcl_CreateInterp();
  SV **args = &ST(0);
- char *appName = SvPV(ST(1),na);
+ char *appName = items >= 1 ? SvPV(ST(1),na) : "";
  int offset = args - sp;
  int code;
  if (!initialized)