Update harfbuzz-ng to 0.9.24

third_party/harfbuzz-ng/src/hb-ot-layout-common-private.hh

Index: third_party/harfbuzz-ng/src/hb-ot-layout-common-private.hh
diff --git a/third_party/harfbuzz-ng/src/hb-ot-layout-common-private.hh b/third_party/harfbuzz-ng/src/hb-ot-layout-common-private.hh
index d139b56ab8632960c49b8601f7fe973f4278e006..367db95574cf342d790b91b819e84526f7d86808 100644
--- a/third_party/harfbuzz-ng/src/hb-ot-layout-common-private.hh
+++ b/third_party/harfbuzz-ng/src/hb-ot-layout-common-private.hh
@@ -39,6 +39,7 @@ namespace OT {
 
 #define NOT_COVERED		((unsigned int) -1)
 #define MAX_NESTING_LEVEL	8
+#define MAX_CONTEXT_LENGTH	64
 
 
 
@@ -871,16 +872,16 @@ struct Coverage
     inline void init (const Coverage &c_) {
       format = c_.u.format;
       switch (format) {
-      case 1: return u.format1.init (c_.u.format1);
-      case 2: return u.format2.init (c_.u.format2);
-      default:return;
+      case 1: u.format1.init (c_.u.format1); return;
+      case 2: u.format2.init (c_.u.format2); return;
+      default:                               return;
       }
     }
     inline bool more (void) {
       switch (format) {
       case 1: return u.format1.more ();
       case 2: return u.format2.more ();
-      default:return true;
+      default:return false;
       }
     }
     inline void next (void) {
@@ -894,14 +895,14 @@ struct Coverage
       switch (format) {
       case 1: return u.format1.get_glyph ();
       case 2: return u.format2.get_glyph ();
-      default:return true;
+      default:return 0;
       }
     }
     inline uint16_t get_coverage (void) {
       switch (format) {
       case 1: return u.format1.get_coverage ();
       case 2: return u.format2.get_coverage ();
-      default:return true;
+      default:return -1;
       }
     }
 
@@ -955,6 +956,19 @@ struct ClassDefFormat1
 
   inline bool intersects_class (const hb_set_t *glyphs, unsigned int klass) const {
     unsigned int count = classValue.len;
+    if (klass == 0)
+    {
+      /* Match if there's any glyph that is not listed! */
+      hb_codepoint_t g = -1;
+      if (!hb_set_next (glyphs, &g))
+        return false;
+      if (g < startGlyph)
+        return true;
+      g = startGlyph + count - 1;
+      if (hb_set_next (glyphs, &g))
+        return true;
+      /* Fall through. */
+    }
     for (unsigned int i = 0; i < count; i++)
       if (classValue[i] == klass && glyphs->has (startGlyph + i))
         return true;
@@ -998,6 +1012,22 @@ struct ClassDefFormat2
 
   inline bool intersects_class (const hb_set_t *glyphs, unsigned int klass) const {
     unsigned int count = rangeRecord.len;
+    if (klass == 0)
+    {
+      /* Match if there's any glyph that is not listed! */
+      hb_codepoint_t g = (hb_codepoint_t) -1;
+      for (unsigned int i = 0; i < count; i++)
+      {
+	if (!hb_set_next (glyphs, &g))
+	  break;
+	if (g < rangeRecord[i].start)
+	  return true;
+	g = rangeRecord[i].end;
+      }
+      if (g != (hb_codepoint_t) -1 && hb_set_next (glyphs, &g))
+        return true;
+      /* Fall through. */
+    }
     for (unsigned int i = 0; i < count; i++)
       if (rangeRecord[i].value == klass && rangeRecord[i].intersects (glyphs))
         return true;
@@ -1082,7 +1112,7 @@ struct Device
 
     if (!pixels) return 0;
 
-    return pixels * (int64_t) scale / ppem;
+    return (int) (pixels * (int64_t) scale / ppem);
   }