From 592d942b3be5e25619edbfe3d37a69bfa75810aa Mon Sep 17 00:00:00 2001
From: Thomas Jandecka <tjandecka@gmail.com>
Date: Wed, 14 Feb 2018 14:23:58 +0100
Subject: [PATCH] fix: byte shift when interpreting 32-bit utf-8 codepoints

---
 src/lib_json/json_writer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib_json/json_writer.cpp b/src/lib_json/json_writer.cpp
index 5ffaa15..456424d 100644
--- a/src/lib_json/json_writer.cpp
+++ b/src/lib_json/json_writer.cpp
@@ -209,7 +209,7 @@ static unsigned int utf8ToCodepoint(const char*& s, const char* e) {
     if (e - s < 4)
       return REPLACEMENT_CHARACTER;
 
-    unsigned int calculated = ((firstByte & 0x07) << 24)
+    unsigned int calculated = ((firstByte & 0x07) << 18)
       | ((static_cast<unsigned int>(s[1]) & 0x3F) << 12)
       | ((static_cast<unsigned int>(s[2]) & 0x3F) << 6)
       |  (static_cast<unsigned int>(s[3]) & 0x3F);