From: Emden Gansner <erg@research.att.com>
Date: Mon, 7 May 2012 21:24:14 +0000 (-0400)
Subject: Fix bug introduced with new expr - buffer size has to large enough or sfprintf fails
X-Git-Tag: LAST_LIBGRAPH~32^2~429
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=87ec2f0b966d66cd25306ab12e786dd3e603443d;p=graphviz

Fix bug introduced with new expr - buffer size has to large enough or sfprintf fails
---

diff --git a/lib/expr/exeval.c b/lib/expr/exeval.c
index d12eb4756..38540b214 100644
--- a/lib/expr/exeval.c
+++ b/lib/expr/exeval.c
@@ -135,7 +135,7 @@ getdyn(Expr_t* ex, register Exnode_t* expr, void* env, Exassoc_t** assoc)
 
 	if (expr->data.variable.index)
 	{
-		char	buf[9];
+		char	buf[2*(sizeof(key.integer))+1];  /* no. of hex chars needed plus null byte */
 		Extype_t key;
 		char *keyname;
 
@@ -155,7 +155,7 @@ getdyn(Expr_t* ex, register Exnode_t* expr, void* env, Exassoc_t** assoc)
 					key = (*ex->disc->keyf) (ex, v, type, ex->disc);
 				} else
 					key.integer = v.integer;
-				sfsprintf(buf, sizeof(buf), "0x%I*x", sizeof(v.integer), key.integer);
+				sfsprintf(buf, sizeof(buf), "%I*x", sizeof(key.integer), key.integer);
 				keyname = buf;
 			} else
 				keyname = v.string;