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Diffstat (limited to 'c/enc/hash_longest_match64_inc.h')
-rw-r--r--c/enc/hash_longest_match64_inc.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/c/enc/hash_longest_match64_inc.h b/c/enc/hash_longest_match64_inc.h
index 8f825de..441ab86 100644
--- a/c/enc/hash_longest_match64_inc.h
+++ b/c/enc/hash_longest_match64_inc.h
@@ -172,6 +172,9 @@ static BROTLI_INLINE void FN(FindLongestMatch)(
size_t i;
out->len = 0;
out->len_code_delta = 0;
+
+ BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask);
+
/* Try last distance first. */
for (i = 0; i < (size_t)self->num_last_distances_to_check_; ++i) {
const size_t backward = (size_t)distance_cache[i];