From 66d5236ce7ac129c7190abcb14e1b481e3dbab2b Mon Sep 17 00:00:00 2001
From: Sebastian Grottel <sebastian.grottel@faro.com>
Date: Fri, 13 Oct 2017 10:44:52 +0200
Subject: [PATCH] changes `RandomNumberGenerator::result_type` to be unsigned

---
 include/internal/catch_test_case_registry_impl.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/internal/catch_test_case_registry_impl.hpp b/include/internal/catch_test_case_registry_impl.hpp
index 316c6c2c..c32cc9f1 100644
--- a/include/internal/catch_test_case_registry_impl.hpp
+++ b/include/internal/catch_test_case_registry_impl.hpp
@@ -22,7 +22,7 @@
 namespace Catch {
 
     struct RandomNumberGenerator {
-        typedef std::ptrdiff_t result_type;
+        typedef std::make_unsigned<std::ptrdiff_t>::type result_type;
 
         result_type operator()( result_type n ) const { return std::rand() % n; }