[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [39726] trunk/blender/source/blender/ blenkernel/intern/library.c: subtraction on unsigned values didnt work as intended for copying ID's.

Campbell Barton ideasman42 at gmail.com
Sat Aug 27 04:45:37 CEST 2011


Revision: 39726
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=39726
Author:   campbellbarton
Date:     2011-08-27 02:45:35 +0000 (Sat, 27 Aug 2011)
Log Message:
-----------
subtraction on unsigned values didnt work as intended for copying ID's.

Modified Paths:
--------------
    trunk/blender/source/blender/blenkernel/intern/library.c

Modified: trunk/blender/source/blender/blenkernel/intern/library.c
===================================================================
--- trunk/blender/source/blender/blenkernel/intern/library.c	2011-08-27 02:04:29 UTC (rev 39725)
+++ trunk/blender/source/blender/blenkernel/intern/library.c	2011-08-27 02:45:35 UTC (rev 39726)
@@ -671,7 +671,7 @@
 	assert(idn != NULL);
 
 	idn_len= MEM_allocN_len(idn);
-	if(idn_len - sizeof(ID) > 0) {
+	if((ssize_t)idn_len - (ssize_t)sizeof(ID) > 0) { /* signed to allow neg result */
 		cp= (char *)id;
 		cpn= (char *)idn;
 		memcpy(cpn+sizeof(ID), cp+sizeof(ID), idn_len - sizeof(ID));




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