From: ellson <devnull@localhost>
Date: Fri, 2 Apr 2010 18:06:39 +0000 (+0000)
Subject: fix for #1804 and #1846 from:  Andrew Moss <andrewmoss@gmail.com>
X-Git-Tag: LAST_LIBGRAPH~32^2~1371
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c3cb5e26a9e6ac46a699fc0efdfbae74797897b8;p=graphviz

fix for #1804 and #1846 from:  Andrew Moss <andrewmoss@gmail.com>
---

diff --git a/macosx/GVGraph.m b/macosx/GVGraph.m
index 9c1005cf5..beb45f34c 100644
--- a/macosx/GVGraph.m
+++ b/macosx/GVGraph.m
@@ -74,6 +74,10 @@ extern char *gvplugin_list(GVC_t * gvc, api_t api, const char *str);
 			}
 			
 			_graph = agread(file);
+			if (!_graph) {
+				[self autorelease];
+				return nil;
+			}
 			fclose(file);
 		}
 		else {