From a9fe3fa3f6c25bcc607eadc7c40dd035e7a45a84 Mon Sep 17 00:00:00 2001
From: Andrew McCallum <mccallum@gnu.org>
Date: Wed, 10 Apr 1996 21:30:10 +0000
Subject: [PATCH] ([Encoder -_coderCreateForwardReferenceForObject:]):
 Initialize the OBJECT_2_FREF ivar, if it hasn't been already.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1349 72102866-910b-0410-8b05-ffd578937521
---
 Source/Encoder.m | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Source/Encoder.m b/Source/Encoder.m
index 9ab8c56a2..8e4904378 100644
--- a/Source/Encoder.m
+++ b/Source/Encoder.m
@@ -290,7 +290,12 @@ my_object_is_class(id object)
 
 - (unsigned) _coderCreateForwardReferenceForObject: anObject
 {
-  unsigned fref = NSCountMapTable (object_2_fref) + 1;
+  unsigned fref;
+  if (!object_2_fref)
+    object_2_fref = 
+      NSCreateMapTable (NSNonOwnedPointerOrNullMapKeyCallBacks,
+			NSIntMapValueCallBacks, 0);
+  fref = NSCountMapTable (object_2_fref) + 1;
   assert ( ! NSMapGet (object_2_fref, anObject));
   NSMapInsert (object_2_fref, anObject, (void*)fref);
   return fref;