From f223262bcd3207986d9bc2f5d5ac43fe10b5e8f1 Mon Sep 17 00:00:00 2001
From: Pierre Joye <pajoye@php.net>
Date: Wed, 17 Mar 2004 17:07:31 +0000
Subject: [PATCH] - Fix crash when an invalid color index is used with
 imagecolortransparent

---
 ext/gd/libgd/gd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/gd/libgd/gd.c b/ext/gd/libgd/gd.c
index 4ae2488b1c..7800db9d5a 100644
--- a/ext/gd/libgd/gd.c
+++ b/ext/gd/libgd/gd.c
@@ -569,7 +569,7 @@ void gdImageColorTransparent (gdImagePtr im, int color)
 		if (im->transparent != -1) {
 			im->alpha[im->transparent] = gdAlphaOpaque;
 		}
-		if (color > -1 && color<=gdMaxColors) {
+		if (color > -1 && color<im->colorsTotal && color<=gdMaxColors) {
 			im->alpha[color] = gdAlphaTransparent;
 		} else {
 			return;
-- 
2.50.1