1 files changed, 48 insertions, 17 deletions

diff --git a/src/3rdparty/harfbuzz-ng/src/hb-shape.cc b/src/3rdparty/harfbuzz-ng/src/hb-shape.cc
index f303a569fd..7b5bf2c5ef 100644
--- a/src/3rdparty/harfbuzz-ng/src/hb-shape.cc
+++ b/src/3rdparty/harfbuzz-ng/src/hb-shape.cc
@@ -35,6 +35,8 @@
 #include "hb-machinery.hh"
 
 
+#ifndef HB_NO_SHAPER
+
 /**
  * SECTION:hb-shape
  * @title: hb-shape
@@ -48,11 +50,9 @@
  **/
 
 
-#if HB_USE_ATEXIT
-static void free_static_shaper_list ();
-#endif
+static inline void free_static_shaper_list ();
 
-static const char *nil_shaper_list[] = {nullptr};
+static const char * const nil_shaper_list[] = {nullptr};
 
 static struct hb_shaper_list_lazy_loader_t : hb_lazy_loader_t<const char *,
 							      hb_shaper_list_lazy_loader_t>
@@ -69,25 +69,21 @@ static struct hb_shaper_list_lazy_loader_t : hb_lazy_loader_t<const char *,
       shaper_list[i] = shapers[i].name;
     shaper_list[i] = nullptr;
 
-#if HB_USE_ATEXIT
-    atexit (free_static_shaper_list);
-#endif
+    hb_atexit (free_static_shaper_list);
 
     return shaper_list;
   }
   static void destroy (const char **l)
   { hb_free (l); }
-  static const char ** get_null ()
+  static const char * const * get_null ()
   { return nil_shaper_list; }
 } static_shaper_list;
 
-#if HB_USE_ATEXIT
-static
+static inline
 void free_static_shaper_list ()
 {
   static_shaper_list.free_instance ();
 }
-#endif
 
 
 /**
@@ -112,12 +108,12 @@ hb_shape_list_shapers ()
  * @font: an #hb_font_t to use for shaping
  * @buffer: an #hb_buffer_t to shape
  * @features: (array length=num_features) (nullable): an array of user
- *    specified #hb_feature_t or %NULL
+ *    specified #hb_feature_t or `NULL`
  * @num_features: the length of @features array
- * @shaper_list: (array zero-terminated=1) (nullable): a %NULL-terminated
- *    array of shapers to use or %NULL
+ * @shaper_list: (array zero-terminated=1) (nullable): a `NULL`-terminated
+ *    array of shapers to use or `NULL`
  *
- * See hb_shape() for details. If @shaper_list is not %NULL, the specified
+ * See hb_shape() for details. If @shaper_list is not `NULL`, the specified
  * shapers will be used in the given order, otherwise the default shapers list
  * will be used.
  *
@@ -132,13 +128,45 @@ hb_shape_full (hb_font_t          *font,
 	       unsigned int        num_features,
 	       const char * const *shaper_list)
 {
+  if (unlikely (!buffer->len))
+    return true;
+
+  buffer->enter ();
+
+  hb_buffer_t *text_buffer = nullptr;
+  if (buffer->flags & HB_BUFFER_FLAG_VERIFY)
+  {
+    text_buffer = hb_buffer_create ();
+    hb_buffer_append (text_buffer, buffer, 0, -1);
+  }
+
   hb_shape_plan_t *shape_plan = hb_shape_plan_create_cached2 (font->face, &buffer->props,
 							      features, num_features,
 							      font->coords, font->num_coords,
 							      shaper_list);
+
   hb_bool_t res = hb_shape_plan_execute (shape_plan, font, buffer, features, num_features);
+
+  if (buffer->max_ops <= 0)
+    buffer->shaping_failed = true;
+
   hb_shape_plan_destroy (shape_plan);
 
+  if (text_buffer)
+  {
+    if (res && buffer->successful && !buffer->shaping_failed
+	    && text_buffer->successful
+	    && !buffer->verify (text_buffer,
+				font,
+				features,
+				num_features,
+				shaper_list))
+      res = false;
+    hb_buffer_destroy (text_buffer);
+  }
+
+  buffer->leave ();
+
   return res;
 }
 
@@ -147,11 +175,11 @@ hb_shape_full (hb_font_t          *font,
  * @font: an #hb_font_t to use for shaping
  * @buffer: an #hb_buffer_t to shape
  * @features: (array length=num_features) (nullable): an array of user
- *    specified #hb_feature_t or %NULL
+ *    specified #hb_feature_t or `NULL`
  * @num_features: the length of @features array
  *
  * Shapes @buffer using @font turning its Unicode characters content to
- * positioned glyphs. If @features is not %NULL, it will be used to control the
+ * positioned glyphs. If @features is not `NULL`, it will be used to control the
  * features applied during shaping. If two @features have the same tag but
  * overlapping ranges the value of the feature with the higher index takes
  * precedence.
@@ -166,3 +194,6 @@ hb_shape (hb_font_t           *font,
 {
   hb_shape_full (font, buffer, features, num_features, nullptr);
 }
+
+
+#endif