From 296955c437f29addaf6c5cbfeb47a606b96a5ab1 Mon Sep 17 00:00:00 2001
From: Sebastian Grottel <sgrottel@users.noreply.github.com>
Date: Sun, 15 Oct 2017 18:30:40 +0200
Subject: [PATCH] `RandomNumberGenerator::result_type` should be unsigned
 (#1050)

`result_type` must be unsigned:
http://en.cppreference.com/w/cpp/concept/UniformRandomBitGenerator

Using a signed type causes an infinite loop working with MS Visual Studio 2017, targetting: v140, WindowsTargetPlatformVersion 10.0.15063.0, Debug, x64
---
 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..879884d6 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 unsigned int result_type;
 
         result_type operator()( result_type n ) const { return std::rand() % n; }