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-rw-r--r--src/3rdparty/harfbuzz-ng/src/hb-ot-shape-fallback.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-fallback.cc b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-fallback.cc
index a774f95185..80d7da82f3 100644
--- a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-fallback.cc
+++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-fallback.cc
@@ -415,6 +415,8 @@ _hb_ot_shape_fallback_position (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer)
{
+ _hb_buffer_assert_gsubgpos_vars (buffer);
+
unsigned int start = 0;
unsigned int last_cluster = buffer->info[0].cluster;
unsigned int count = buffer->len;