From a60ea2d6f49c91a763a0dbe331259f8deba2f460 Mon Sep 17 00:00:00 2001
From: Matthew Gregan <kinetik@flim.org>
Date: Wed, 28 Oct 2015 16:39:12 +1300
Subject: [PATCH] Convert assert in read_box_header to an error return.

---
 src/lib.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 7fada166..aba9d605 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -270,7 +270,9 @@ pub fn read_box_header<T: ReadBytesExt>(src: &mut T) -> Result<BoxHeader> {
         0 => return Err(Error::InvalidData),
         1 => {
             let size64 = try!(be_u64(src));
-            assert!(size64 >= 16);
+            if size64 < 16 {
+                return Err(Error::InvalidData);
+            }
             size64
         },
         2 ... 7 => return Err(Error::InvalidData),