From d7a656523bff496d4a6ec6b40917ea50a6bafb16 Mon Sep 17 00:00:00 2001
From: Takatoshi Kondo <redboltz@gmail.com>
Date: Mon, 11 Jul 2016 19:34:10 +0900
Subject: [PATCH] Fixed #503.

Fixed fwrite return value comparison.
---
 include/msgpack/fbuffer.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/msgpack/fbuffer.h b/include/msgpack/fbuffer.h
index d478008c..d766c839 100644
--- a/include/msgpack/fbuffer.h
+++ b/include/msgpack/fbuffer.h
@@ -25,7 +25,7 @@ extern "C" {
 
 static inline int msgpack_fbuffer_write(void* data, const char* buf, size_t len)
 {
-    return (1 == fwrite(buf, len, 1, (FILE *)data)) ? 0 : -1;
+    return (len == fwrite(buf, len, 1, (FILE *)data)) ? 0 : -1;
 }
 
 /** @} */