From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Fri, 2 Sep 2022 01:14:05 +0000 (-0700)
Subject: smyrna add_graph_to_viewport: fix unchecked allocation failure
X-Git-Tag: 6.0.1~13^2~18
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=5ae152146fe64bf296dede6f3ff349449180d147;p=graphviz

smyrna add_graph_to_viewport: fix unchecked allocation failure
---

diff --git a/cmd/smyrna/viewport.c b/cmd/smyrna/viewport.c
index 3bf122955..7aed95dd4 100644
--- a/cmd/smyrna/viewport.c
+++ b/cmd/smyrna/viewport.c
@@ -13,6 +13,7 @@
 #endif
 #include "viewport.h"
 #include "draw.h"
+#include <cgraph/alloc.h>
 #include <common/color.h>
 #include <glade/glade.h>
 #include "gui.h"
@@ -517,9 +518,9 @@ static void activate(int id)
 int add_graph_to_viewport(Agraph_t * graph, char *id)
 {
     if (graph) {
+	view->g = gv_recalloc(view->g, view->graphCount, view->graphCount + 1,
+	                      sizeof(Agraph_t*));
 	view->graphCount = view->graphCount + 1;
-	view->g = realloc(view->g,
-				  sizeof(Agraph_t *) * view->graphCount);
 	view->g[view->graphCount - 1] = graph;
 
 	gtk_combo_box_append_text(view->graphComboBox, id);