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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-morx-table.hh2
1 files changed, 1 insertions, 1 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-morx-table.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-morx-table.hh
index b77c1f4d449..3d053cb13e5 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-morx-table.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-morx-table.hh
@@ -123,7 +123,7 @@ struct RearrangementSubtable
bool reverse_l = 3 == (m >> 4);
bool reverse_r = 3 == (m & 0x0F);
- if (end - start >= l + r)
+ if (end - start >= l + r && end-start <= HB_MAX_CONTEXT_LENGTH)
{
buffer->merge_clusters (start, hb_min (buffer->idx + 1, buffer->len));
buffer->merge_clusters (start, end);