From fbef77a9422f60cba460f16404b4aa1ad67f0088 Mon Sep 17 00:00:00 2001
From: "Daniel J. Hofmann" <daniel@trvx.org>
Date: Tue, 2 Feb 2016 11:57:57 +0100
Subject: [PATCH] Documents why not to use boost::irange in favor of our
 hand-written irange

---
 include/util/integer_range.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/util/integer_range.hpp b/include/util/integer_range.hpp
index ee706bd8b..29d428f80 100644
--- a/include/util/integer_range.hpp
+++ b/include/util/integer_range.hpp
@@ -12,6 +12,11 @@ namespace osrm
 namespace util
 {
 
+// Warning: do not try to replace this with Boost's irange, as it is broken on Boost 1.55:
+//     auto r = boost::irange<unsigned int>(0, 15);
+//     std::cout << r.size() << std::endl;
+// results in -4294967281. Latest Boost versions fix this, but we still support older ones.
+
 template <typename Integer> class range
 {
   private: