From a22b1b6bc86b5d45aaf84cf171d1f4b3054b1ef9 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Thu, 21 Apr 2016 20:26:07 +0100
Subject: [PATCH] Fix BufferIterator::difference_type, it should be signed

---
 src/buffer.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/buffer.hh b/src/buffer.hh
index 7e03c75c..2b118c89 100644
--- a/src/buffer.hh
+++ b/src/buffer.hh
@@ -49,7 +49,7 @@ class BufferIterator
 {
 public:
     using value_type = char;
-    using difference_type = size_t;
+    using difference_type = ssize_t;
     using pointer = const value_type*;
     using reference = const value_type&;
     using iterator_category = std::bidirectional_iterator_tag;