From 80688bd32ad7a581aa8b28a2f0de10d294f86e0f Mon Sep 17 00:00:00 2001
From: Carl Smedstad <carl.smedstad@protonmail.com>
Date: Mon, 27 Sep 2021 21:02:43 +0200
Subject: [PATCH] Add assert_invariant call to catch errors earlier

---
 include/nlohmann/json.hpp        | 1 +
 single_include/nlohmann/json.hpp | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp
index 594ba0d2a..c683d2522 100644
--- a/include/nlohmann/json.hpp
+++ b/include/nlohmann/json.hpp
@@ -3713,6 +3713,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
                     set_parents(begin() + static_cast<typename iterator::difference_type>(old_size), static_cast<typename iterator::difference_type>(idx + 1 - old_size));
                 }
 #endif
+                assert_invariant();
             }
 
             return m_value.array->operator[](idx);
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 3f8140e67..5899a7945 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -21119,6 +21119,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
                     set_parents(begin() + static_cast<typename iterator::difference_type>(old_size), static_cast<typename iterator::difference_type>(idx + 1 - old_size));
                 }
 #endif
+                assert_invariant();
             }
 
             return m_value.array->operator[](idx);