From 3f97a5d5ad8f102a2c401706755ce9f0567564e8 Mon Sep 17 00:00:00 2001
From: Niels <niels.lohmann@gmail.com>
Date: Wed, 22 Jun 2016 20:05:44 +0200
Subject: [PATCH] a conceptual quick fix for #269

---
 src/json.hpp      | 7 +++++--
 src/json.hpp.re2c | 7 +++++--
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/json.hpp b/src/json.hpp
index 9d6687dd..09b6a800 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -10002,13 +10002,16 @@ basic_json_parser_63:
                     // in a second pass, traverse the remaining elements
 
                     // remove my remaining elements
+                    const auto end_index = static_cast<difference_type>(result.size());
                     while (i < source.size())
                     {
-                        result.push_back(object(
+                        // add operations in reverse order to avoid invalid
+                        // indices
+                        result.insert(result.begin() + end_index,
                         {
                             {"op", "remove"},
                             {"path", path + "/" + std::to_string(i)}
-                        }));
+                        });
                         ++i;
                     }
 
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index 9681bed2..c5de9246 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -9312,13 +9312,16 @@ class basic_json
                     // in a second pass, traverse the remaining elements
 
                     // remove my remaining elements
+                    const auto end_index = static_cast<difference_type>(result.size());
                     while (i < source.size())
                     {
-                        result.push_back(object(
+                        // add operations in reverse order to avoid invalid
+                        // indices
+                        result.insert(result.begin() + end_index,
                         {
                             {"op", "remove"},
                             {"path", path + "/" + std::to_string(i)}
-                        }));
+                        });
                         ++i;
                     }