From 237d452abaf85bce93648d9034bb4b7a3087cab8 Mon Sep 17 00:00:00 2001
From: Charlie Savage <cfis@interserv.com>
Date: Fri, 13 Jan 2006 21:52:13 +0000
Subject: [PATCH] Added check for nil object being passed to
 SWIG_AsCharPtrAndSize.  If a nil object is passed in then an error is
 returned.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@8416 626c5289-ae23-0410-ae9c-e8d60b6d4f22
---
 SWIG/Lib/ruby/rubystrings.swg | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/SWIG/Lib/ruby/rubystrings.swg b/SWIG/Lib/ruby/rubystrings.swg
index e7b0330ba..ad42bee60 100644
--- a/SWIG/Lib/ruby/rubystrings.swg
+++ b/SWIG/Lib/ruby/rubystrings.swg
@@ -6,7 +6,10 @@
 SWIGINTERN int
 SWIG_AsCharPtrAndSize(VALUE obj, char** cptr, size_t* psize, int *alloc)
 {
-  if (TYPE(obj) == T_STRING) {
+  /* Check for nil object first */
+  if (obj == Qnil) {
+    return SWIG_BADOBJ;
+  } else if (TYPE(obj) == T_STRING) {
     char *cstr = rb_string_value_ptr(&(obj)); 
     size_t size = RSTRING(obj)->len + 1;
     if (cptr)  {