Update bundled HarfBuzz-NG to 0.9.38

Most important changes:
* Fixes for Arabic, Hangul, Hebrew, Indic,
  Mandaic, Myanmar, and New Tai Lue shapers.
* Fixed out-of-bounds access in Indic shaper.
* Build and stability fixes, various optimizations.

Change-Id: I4f0e32c017f62fe576bee41a430d3da6d571de80
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc
index 1f99014c62..a0b503ab0f 100644
--- a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc
+++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape.cc
@@ -43,7 +43,6 @@
 
 static hb_tag_t common_features[] = {
   HB_TAG('c','c','m','p'),
-  HB_TAG('l','i','g','a'),
   HB_TAG('l','o','c','l'),
   HB_TAG('m','a','r','k'),
   HB_TAG('m','k','m','k'),
@@ -56,6 +55,7 @@ static hb_tag_t horizontal_features[] = {
   HB_TAG('c','l','i','g'),
   HB_TAG('c','u','r','s'),
   HB_TAG('k','e','r','n'),
+  HB_TAG('l','i','g','a'),
   HB_TAG('r','c','l','t'),
 };
 
@@ -236,6 +236,7 @@ static void
 hb_insert_dotted_circle (hb_buffer_t *buffer, hb_font_t *font)
 {
   if (!(buffer->flags & HB_BUFFER_FLAG_BOT) ||
+      buffer->context_len[0] ||
       _hb_glyph_info_get_general_category (&buffer->info[0]) !=
       HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)
     return;
@@ -243,7 +244,7 @@ hb_insert_dotted_circle (hb_buffer_t *buffer, hb_font_t *font)
   if (!font->has_glyph (0x25CCu))
     return;
 
-  hb_glyph_info_t dottedcircle;
+  hb_glyph_info_t dottedcircle = {0};
   dottedcircle.codepoint = 0x25CCu;
   _hb_glyph_info_set_unicode_props (&dottedcircle, buffer->unicode);
 
@@ -447,6 +448,7 @@ hb_ot_substitute_complex (hb_ot_shape_context_t *c)
 {
   hb_buffer_t *buffer = c->buffer;
 
+  _hb_buffer_allocate_gsubgpos_vars (buffer);
   hb_ot_layout_substitute_start (c->font, buffer);
 
   if (!hb_ot_layout_has_glyph_classes (c->face))
@@ -635,6 +637,8 @@ hb_ot_position (hb_ot_shape_context_t *c)
 
   if (fallback)
     _hb_ot_shape_fallback_kern (c->plan, c->font, c->buffer);
+
+  _hb_buffer_deallocate_gsubgpos_vars (c->buffer);
 }