From d828e40f6d4d18ec6635d2ecff7cb2239e28dcf1 Mon Sep 17 00:00:00 2001
From: Bjorn Reese <breese@users.sourceforge.net>
Date: Sun, 12 Feb 2017 15:06:31 +0100
Subject: [PATCH] Output at most 8 differing container values

---
 include/boost/core/lightweight_test.hpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/boost/core/lightweight_test.hpp b/include/boost/core/lightweight_test.hpp
index 8ed0f7d..908cc77 100644
--- a/include/boost/core/lightweight_test.hpp
+++ b/include/boost/core/lightweight_test.hpp
@@ -192,6 +192,7 @@ void test_all_eq_impl(FormattedOutputFunction& output,
     typename std::iterator_traits<InputIterator1>::difference_type first_index = 0;
     typename std::iterator_traits<InputIterator2>::difference_type second_index = 0;
     std::size_t error_count = 0;
+    const std::size_t max_count = 8;
     do
     {
         while ((first_it != first_end) && (second_it != second_end) && (*first_it == *second_it))
@@ -209,6 +210,11 @@ void test_all_eq_impl(FormattedOutputFunction& output,
         {
             output << file << "(" << line << "): Container contents differ in function '" << function << "':";
         }
+        else if (error_count >= max_count)
+        {
+            output << " ...";
+            break;
+        }
         output << " [" << first_index << "] '" << test_output_impl(*first_it) << "' != '" << test_output_impl(*second_it) << "'";
         ++first_it;
         ++second_it;