- MFH (crash in imagecolortransparent with invalid color index)

diff --git a/ext/gd/libgd/gd.c b/ext/gd/libgd/gd.c
index 87471898f46b905ea235a86c5f9c5095bcd4292c..96b6a688731caf2571c55417607ec841e534b05b 100644 (file)
--- a/ext/gd/libgd/gd.c
+++ b/ext/gd/libgd/gd.c
@@ -571,7 +571,7 @@ 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;