1diff --git a/third_party/libopenjpeg20/pi.c b/third_party/libopenjpeg20/pi.c 2index 1697bcb..06f1e41 100644 3--- a/third_party/libopenjpeg20/pi.c 4+++ b/third_party/libopenjpeg20/pi.c 5@@ -36,6 +36,7 @@ 6 * POSSIBILITY OF SUCH DAMAGE. 7 */ 8 9+#include <limits.h> 10 #include "opj_includes.h" 11 12 /** @defgroup PI PI - Implementation of a packet iterator */ 13@@ -1236,7 +1237,13 @@ opj_pi_iterator_t *opj_pi_create_decode(opj_image_t *p_image, 14 l_current_pi = l_pi; 15 16 /* memory allocation for include */ 17- l_current_pi->include = (OPJ_INT16*) opj_calloc((l_tcp->numlayers +1) * l_step_l, sizeof(OPJ_INT16)); 18+ l_current_pi->include = 00; 19+ if 20+ (l_step_l && l_tcp->numlayers < UINT_MAX / l_step_l - 1) 21+ { 22+ l_current_pi->include = (OPJ_INT16*)opj_calloc((l_tcp->numlayers + 1) * l_step_l, sizeof(OPJ_INT16)); 23+ } 24+ 25 if 26 (!l_current_pi->include) 27 { 28