Merge pull request #529 from renevanderark/master

[openjpeg.git] / src / lib / openjp2 / j2k.c

diff --git a/src/lib/openjp2/j2k.c b/src/lib/openjp2/j2k.c
index 6c98d08ff86c69893a8a2b5050b3e8cfeec68c8c..ee988b6d5716e35dc8622f0c7b09457dddcdf691 100644 (file)
--- a/src/lib/openjp2/j2k.c
+++ b/src/lib/openjp2/j2k.c
@@ -2031,14 +2031,8 @@ static OPJ_BOOL opj_j2k_read_siz(opj_j2k_t *p_j2k,
         }
 
         /* testcase issue427-illegal-tile-offset.jp2 */
-        l_tx1 = l_cp->tx0 + l_cp->tdx;
-        if (l_tx1 < l_cp->tx0) { /* manage overflow */
-                l_tx1 = 0xFFFFFFFFU;
-        }
-        l_ty1 = l_cp->ty0 + l_cp->tdy;
-        if (l_ty1 < l_cp->ty0) { /* manage overflow */
-                l_ty1 = 0xFFFFFFFFU;
-        }
+        l_tx1 = opj_uint_adds(l_cp->tx0, l_cp->tdx); /* manage overflow */
+        l_ty1 = opj_uint_adds(l_cp->ty0, l_cp->tdy); /* manage overflow */
         if ((l_cp->tx0 > l_image->x0) || (l_cp->ty0 > l_image->y0) || (l_tx1 <= l_image->x0) || (l_ty1 <= l_image->y0) ) {
                 opj_event_msg(p_manager, EVT_ERROR, "Error with SIZ marker: illegal tile offset\n");
                 return OPJ_FALSE;