Update Harfbuzz to version 6.0.0

Note: This requires an update to the tst_qtextlayout test, because
the test assumed that the Arabic string would always yield a run
of two glyphs. This was a side effect of how Harfbuzz handled
Qt's test font, which has zero font tables and cannot be used for
shaping. With the Harfbuzz update, the Arabic text here yields a
single cluster instead, which actually makes more sense, so the
test has been made a bit more robust to support both cases.

Pick-to: 6.2 6.5
Task-number: QTBUG-110338
Change-Id: I93d4cf8e3046dc93224e144d4c81d86bef4918d1
Reviewed-by: Lars Knoll <lars@knoll.priv.no>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 5 insertions, 3 deletions

diff --git a/src/3rdparty/harfbuzz-ng/src/hb-aat-map.hh b/src/3rdparty/harfbuzz-ng/src/hb-aat-map.hh
index 5a0fa70544..d0ee7d672c 100644
--- a/src/3rdparty/harfbuzz-ng/src/hb-aat-map.hh
+++ b/src/3rdparty/harfbuzz-ng/src/hb-aat-map.hh
@@ -38,7 +38,7 @@ struct hb_aat_map_t
 
   void init ()
   {
-    memset (this, 0, sizeof (*this));
+    hb_memset (this, 0, sizeof (*this));
     chain_flags.init ();
   }
   void fini () { chain_flags.fini (); }
@@ -52,8 +52,9 @@ struct hb_aat_map_builder_t
   public:
 
   HB_INTERNAL hb_aat_map_builder_t (hb_face_t *face_,
-				    const hb_segment_properties_t *props_ HB_UNUSED) :
-				      face (face_) {}
+				    const hb_segment_properties_t props_) :
+				      face (face_),
+				      props (props_) {}
 
   HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value=1);
 
@@ -87,6 +88,7 @@ struct hb_aat_map_builder_t
 
   public:
   hb_face_t *face;
+  hb_segment_properties_t props;
 
   public:
   hb_sorted_vector_t<feature_info_t> features;