opj_dwt_decode_tile(): avoid potential UndefinedBehaviorSanitizer 'ap…

…plying zero offset to null pointer' (fixes #1505)
uclouvain · Feb 18, 2024 · d903fbb · d903fbb
1 parent b0e83a1
commit d903fbb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/lib/openjp2/dwt.c b/src/lib/openjp2/dwt.c
@@ -2083,7 +2083,9 @@ static OPJ_BOOL opj_dwt_decode_tile(opj_thread_pool_t* tp,
     OPJ_SIZE_T h_mem_size;
     int num_threads;
 
-    if (numres == 1U) {
+    /* Not entirely sure for the return code of w == 0 which is triggered per */
+    /* https://github.com/uclouvain/openjpeg/issues/1505 */
+    if (numres == 1U || w == 0) {
         return OPJ_TRUE;
     }
     num_threads = opj_thread_pool_get_thread_count(tp);