From c9963af848ed3e9b4f34ea976045deb351fa39ef Mon Sep 17 00:00:00 2001
From: Tsuda Kageyu <tsuda.kageyu@gmail.com>
Date: Fri, 31 Jul 2015 11:24:36 +0900
Subject: [PATCH] MP4 atom length is limited up to 31 bits. 32-bit value will
 be negative.

---
 taglib/mp4/mp4atom.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/taglib/mp4/mp4atom.cpp b/taglib/mp4/mp4atom.cpp
index b12f9459..bd9c7b16 100644
--- a/taglib/mp4/mp4atom.cpp
+++ b/taglib/mp4/mp4atom.cpp
@@ -27,6 +27,8 @@
 #include <config.h>
 #endif
 
+#include <climits>
+
 #include <tdebug.h>
 #include <tstring.h>
 #include "mp4atom.h"
@@ -60,8 +62,8 @@ MP4::Atom::Atom(File *file)
       length = longLength;
     }
     else {
-      if(longLength <= 0xFFFFFFFF) {
-        // The atom has a 64-bit length, but it's actually a 32-bit value
+      if(longLength <= LONG_MAX) {
+        // The atom has a 64-bit length, but it's actually a 31-bit value
         length = (long)longLength;
       }
       else {