opj_tcd_dc_level_shift_decode: avoid int32 overflow when prec == 31. Fixes https...

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

diff --git a/src/lib/openjp2/tcd.c b/src/lib/openjp2/tcd.c
index 08c5a765a12910c26243ecaeefc2a5ad9186ec0e..1213bffea73ae900289492d7f60a4f016533a92e 100644 (file)
--- a/src/lib/openjp2/tcd.c
+++ b/src/lib/openjp2/tcd.c
@@ -1883,7 +1883,7 @@ static OPJ_BOOL opj_tcd_dc_level_shift_decode(opj_tcd_t *p_tcd)
             l_max = (1 << (l_img_comp->prec - 1)) - 1;
         } else {
             l_min = 0;
-            l_max = (1 << l_img_comp->prec) - 1;
+            l_max = (OPJ_INT32)((1U << l_img_comp->prec) - 1);
         }
 
         l_current_ptr = l_tile_comp->data;