From e116058bba1f5eb667d211c0c6c0be1bbffc6213 Mon Sep 17 00:00:00 2001
From: Khaled Hosny <khaled@aliftype.com>
Date: Thu, 15 Apr 2021 13:52:19 +0200
Subject: [PATCH] [directwrite] Use correct UTF-16 string length

Fixes https://github.com/harfbuzz/harfbuzz/issues/2474
---
 src/hb-directwrite.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hb-directwrite.cc b/src/hb-directwrite.cc
index a07302159..aebe9e054 100644
--- a/src/hb-directwrite.cc
+++ b/src/hb-directwrite.cc
@@ -623,7 +623,7 @@ _hb_directwrite_shape_full (hb_shape_plan_t    *shape_plan,
   * but we never attempt to shape a word longer than 64K characters
   * in a single gfxShapedWord, so we cannot exceed that limit.
   */
-  uint32_t textLength = buffer->len;
+  uint32_t textLength = chars_len;
 
   TextAnalysis analysis (textString, textLength, nullptr, readingDirection);
   TextAnalysis::Run *runHead;