--- graphviz-2.26.0/lib/gd/gd_png.c.ark 2010-01-08 14:02:42.810241098 +0000 +++ graphviz-2.26.0/lib/gd/gd_png.c 2010-01-08 14:04:17.316903953 +0000 @@ -150,7 +150,7 @@ BGD_DECLARE(gdImagePtr) gdImageCreateFro return NULL; } - if (!png_check_sig (sig, 8)) { /* bad signature */ + if (!png_sig_cmp (sig, 0, 8)) { /* bad signature */ return NULL; /* bad signature */ }