Upstream release v3.10.1

README.md

@@ -12,7 +12,7 @@ include(FetchContent)
 
 FetchContent_Declare(json
   GIT_REPOSITORY https://github.com/ArthurSonzogni/nlohmann_json_cmake_fetchcontent
-  GIT_TAG v3.10.0)
+  GIT_TAG v3.10.1)
 
 FetchContent_GetProperties(json)
 if(NOT json_POPULATED)

include/nlohmann/json.hpp

 /*
     __ _____ _____ _____
  __|  |   __|     |   | |  JSON for Modern C++
-|  |  |__   |  |  | | | |  version 3.10.0
+|  |  |__   |  |  | | | |  version 3.10.1
 |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 Licensed under the MIT License <http://opensource.org/licenses/MIT>.
@@ -32,7 +32,7 @@ SOFTWARE.
 #define NLOHMANN_JSON_VERSION_MAJOR 3
 #define NLOHMANN_JSON_VERSION_MINOR 10
-#define NLOHMANN_JSON_VERSION_PATCH 0
+#define NLOHMANN_JSON_VERSION_PATCH 1
 #include <algorithm> // all_of, find, for_each
 #include <cstddef> // nullptr_t, ptrdiff_t, size_t
@@ -3845,6 +3845,24 @@ struct is_constructible_tuple : std::false_type {};
 template<typename T1, typename... Args>
 struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
+// a naive helper to check if a type is an ordered_map (exploits the fact that
+// ordered_map inherits capacity() from std::vector)
+template <typename T>
+struct is_ordered_map
+{
+    using one = char;
+
+    struct two
+    {
+        char x[2]; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+    };
+
+    template <typename C> static one test( decltype(&C::capacity) ) ;
+    template <typename C> static two test(...);
+
+    enum { value = sizeof(test<T>(nullptr)) == sizeof(char) }; // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
+};
+
 // to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
 template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
 T conditional_static_cast(U value)
@@ -4602,7 +4620,7 @@ struct external_constructor<value_t::binary>
     {
         j.m_value.destroy(j.m_type);
         j.m_type = value_t::binary;
-        j.m_value = typename BasicJsonType::binary_t(std::move(b));;
+        j.m_value = typename BasicJsonType::binary_t(std::move(b));
         j.assert_invariant();
     }
 };
@@ -5169,6 +5187,8 @@ class byte_container_with_subtype : public BinaryType
 // #include <nlohmann/detail/macro_scope.hpp>
+// #include <nlohmann/detail/value_t.hpp>
+
 namespace nlohmann
 {
@@ -13615,7 +13635,7 @@ class binary_writer
             case value_t::discarded:
             default:
             {
-                JSON_THROW(type_error::create(317, "to serialize to BSON, top-level type must be object, but is " + std::string(j.type_name()), j));;
+                JSON_THROW(type_error::create(317, "to serialize to BSON, top-level type must be object, but is " + std::string(j.type_name()), j));
             }
         }
     }
@@ -18446,7 +18466,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
                     object = nullptr;  // silence warning, see #821
                     if (JSON_HEDLEY_UNLIKELY(t == value_t::null))
                     {
-                        JSON_THROW(other_error::create(500, "961c151d2e87f2686a955a9be24d316f1362bf21 3.10.0", basic_json())); // LCOV_EXCL_LINE
+                        JSON_THROW(other_error::create(500, "961c151d2e87f2686a955a9be24d316f1362bf21 3.10.1", basic_json())); // LCOV_EXCL_LINE
                     }
                     break;
                 }
@@ -18717,6 +18737,21 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
             }
         }
+        // ordered_json uses a vector internally, so pointers could have
+        // been invalidated; see https://github.com/nlohmann/json/issues/2962
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning(push )
+#pragma warning(disable : 4127) // ignore warning to replace if with if constexpr
+#endif
+        if (detail::is_ordered_map<object_t>::value)
+        {
+            set_parents();
+            return j;
+        }
+#ifdef JSON_HEDLEY_MSVC_VERSION
+#pragma warning( pop )
+#endif
+
         j.m_parent = this;
 #else
         static_cast<void>(j);