diff -rupN --no-dereference openjpeg-2.3.1/src/lib/openjp2/tcd.c openjpeg-2.3.1-new/src/lib/openjp2/tcd.c
--- openjpeg-2.3.1/src/lib/openjp2/tcd.c 2021-05-27 23:56:49.136143909 +0200
+++ openjpeg-2.3.1-new/src/lib/openjp2/tcd.c 2021-05-27 23:56:49.140143909 +0200
@@ -1235,9 +1235,11 @@ static OPJ_BOOL opj_tcd_code_block_enc_a
/* +1 is needed for https://github.com/uclouvain/openjpeg/issues/835 */
/* and actually +2 required for https://github.com/uclouvain/openjpeg/issues/982 */
+ /* and +7 for https://github.com/uclouvain/openjpeg/issues/1283 (-M 3) */
+ /* and +26 for https://github.com/uclouvain/openjpeg/issues/1283 (-M 7) */
/* TODO: is there a theoretical upper-bound for the compressed code */
/* block size ? */
- l_data_size = 2 + (OPJ_UINT32)((p_code_block->x1 - p_code_block->x0) *
+ l_data_size = 26 + (OPJ_UINT32)((p_code_block->x1 - p_code_block->x0) *
(p_code_block->y1 - p_code_block->y0) * (OPJ_INT32)sizeof(OPJ_UINT32));
if (l_data_size > p_code_block->data_size) {