Update harfbuzz-ng to 0.9.24

third_party/harfbuzz-ng/src/hb-buffer-serialize.cc

Index: third_party/harfbuzz-ng/src/hb-buffer-serialize.cc
diff --git a/third_party/harfbuzz-ng/src/hb-buffer-serialize.cc b/third_party/harfbuzz-ng/src/hb-buffer-serialize.cc
index dc47ba73e084aef619a2b1c26c175073448a93a6..4541db23bd23f4b97196f5b37044e5d9f3fb3c6c 100644
--- a/third_party/harfbuzz-ng/src/hb-buffer-serialize.cc
+++ b/third_party/harfbuzz-ng/src/hb-buffer-serialize.cc
@@ -33,12 +33,32 @@ static const char *serialize_formats[] = {
   NULL
 };
 
+/**
+ * hb_buffer_serialize_list_formats:
+ *
+ * 
+ *
+ * Return value: (transfer none):
+ *
+ * Since: 1.0
+ **/
 const char **
 hb_buffer_serialize_list_formats (void)
 {
   return serialize_formats;
 }
 
+/**
+ * hb_buffer_serialize_format_from_string:
+ * @str: 
+ * @len: 
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
 hb_buffer_serialize_format_t
 hb_buffer_serialize_format_from_string (const char *str, int len)
 {
@@ -46,6 +66,16 @@ hb_buffer_serialize_format_from_string (const char *str, int len)
   return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020);
 }
 
+/**
+ * hb_buffer_serialize_format_to_string:
+ * @format: 
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
 const char *
 hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format)
 {
@@ -100,10 +130,10 @@ _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer,
       *p++ = '"';
     }
     else
-      p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint);
+      p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint));
 
     if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) {
-      p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster);
+      p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster));
     }
 
     if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS))
@@ -116,9 +146,9 @@ _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer,
 
     *p++ = '}';
 
-    if (buf_size > (p - b))
+    unsigned int l = p - b;
+    if (buf_size > l)
     {
-      unsigned int l = p - b;
       memcpy (buf, b, l);
       buf += l;
       buf_size -= l;
@@ -161,26 +191,26 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer,
       p += strlen (p);
     }
     else
-      p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint);
+      p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint));
 
     if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) {
-      p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "=%u", info[i].cluster);
+      p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "=%u", info[i].cluster));
     }
 
     if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS))
     {
       if (pos[i].x_offset || pos[i].y_offset)
-	p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", pos[i].x_offset, pos[i].y_offset);
+	p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", pos[i].x_offset, pos[i].y_offset));
 
       *p++ = '+';
-      p += snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance);
+      p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance));
       if (pos->y_advance)
-	p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance);
+	p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance));
     }
 
-    if (buf_size > (p - b))
+    unsigned int l = p - b;
+    if (buf_size > l)
     {
-      unsigned int l = p - b;
       memcpy (buf, b, l);
       buf += l;
       buf_size -= l;
@@ -194,6 +224,24 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer,
 }
 
 /* Returns number of items, starting at start, that were serialized. */
+/**
+ * hb_buffer_serialize_glyphs:
+ * @buffer: a buffer.
+ * @start: 
+ * @end: 
+ * @buf: (array length=buf_size):
+ * @buf_size: 
+ * @buf_consumed: (out):
+ * @font: 
+ * @format: 
+ * @flags: 
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
 unsigned int
 hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
 			    unsigned int start,
@@ -286,6 +334,21 @@ parse_int (const char *pp, const char *end, int32_t *pv)
 #include "hb-buffer-deserialize-json.hh"
 #include "hb-buffer-deserialize-text.hh"
 
+/**
+ * hb_buffer_deserialize_glyphs:
+ * @buffer: a buffer.
+ * @buf: (array length=buf_len):
+ * @buf_len: 
+ * @end_ptr: (out):
+ * @font: 
+ * @format: 
+ *
+ * 
+ *
+ * Return value: 
+ *
+ * Since: 1.0
+ **/
 hb_bool_t
 hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
 			      const char *buf,