🚨 fixed warnings

include/nlohmann/detail/input/binary_reader.hpp

@@ -13,9 +13,9 @@
 #include <string> // char_traits, string
 #include <utility> // make_pair, move
 
+#include <nlohmann/detail/exceptions.hpp>
 #include <nlohmann/detail/input/input_adapters.hpp>
 #include <nlohmann/detail/input/json_sax.hpp>
-#include <nlohmann/detail/exceptions.hpp>
 #include <nlohmann/detail/macro_scope.hpp>
 #include <nlohmann/detail/meta/is_sax.hpp>
 #include <nlohmann/detail/value_t.hpp>
@@ -52,6 +52,13 @@ class binary_reader
         assert(ia);
     }
 
+    // make class move-only
+    binary_reader(const binary_reader&) = delete;
+    binary_reader(binary_reader&&) noexcept = default;
+    binary_reader& operator=(const binary_reader&) = delete;
+    binary_reader& operator=(binary_reader&&) noexcept = default;
+    ~binary_reader() = default;
+
     /*!
     @param[in] format  the binary format to parse
     @param[in] sax_    a SAX event processor

include/nlohmann/detail/input/input_adapters.hpp

@@ -3,6 +3,7 @@
 #include <array> // array
 #include <cassert> // assert
 #include <cstddef> // size_t
+#include <cstdio> //FILE *
 #include <cstring> // strlen
 #include <istream> // istream
 #include <iterator> // begin, end, iterator_traits, random_access_iterator_tag, distance, next
@@ -11,7 +12,6 @@
 #include <string> // string, char_traits
 #include <type_traits> // enable_if, is_base_of, is_pointer, is_integral, remove_pointer
 #include <utility> // pair, declval
-#include <cstdio> //FILE *
 
 #include <nlohmann/detail/iterators/iterator_traits.hpp>
 #include <nlohmann/detail/macro_scope.hpp>
@@ -59,10 +59,18 @@ class file_input_adapter : public input_adapter_protocol
         : m_file(f)
     {}
 
+    // make class move-only
+    file_input_adapter(const file_input_adapter&) = delete;
+    file_input_adapter(file_input_adapter&&) noexcept = default;
+    file_input_adapter& operator=(const file_input_adapter&) = delete;
+    file_input_adapter& operator=(file_input_adapter&&) noexcept = default;
+    ~file_input_adapter() override = default;
+
     std::char_traits<char>::int_type get_character() noexcept override
     {
         return std::fgetc(m_file);
     }
+
   private:
     /// the file pointer to read from
     std::FILE* m_file;

include/nlohmann/detail/input/json_sax.hpp

@@ -159,6 +159,13 @@ class json_sax_dom_parser
         : root(r), allow_exceptions(allow_exceptions_)
     {}
 
+    // make class move-only
+    json_sax_dom_parser(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser(json_sax_dom_parser&&) noexcept = default;
+    json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
+    json_sax_dom_parser& operator=(json_sax_dom_parser&&) noexcept = default;
+    ~json_sax_dom_parser() = default;
+
     bool null()
     {
         handle_value(nullptr);
@@ -307,7 +314,7 @@ class json_sax_dom_parser
     /// the parsed JSON value
     BasicJsonType& root;
     /// stack to model hierarchy of values
-    std::vector<BasicJsonType*> ref_stack;
+    std::vector<BasicJsonType*> ref_stack {};
     /// helper to hold the reference for the next object element
     BasicJsonType* object_element = nullptr;
     /// whether a syntax error occurred
@@ -335,6 +342,13 @@ class json_sax_dom_callback_parser
         keep_stack.push_back(true);
     }
 
+    // make class move-only
+    json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default;
+    json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
+    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default;
+    ~json_sax_dom_callback_parser() = default;
+
     bool null()
     {
         handle_value(nullptr);
@@ -612,11 +626,11 @@ class json_sax_dom_callback_parser
     /// the parsed JSON value
     BasicJsonType& root;
     /// stack to model hierarchy of values
-    std::vector<BasicJsonType*> ref_stack;
+    std::vector<BasicJsonType*> ref_stack {};
     /// stack to manage which values to keep
-    std::vector<bool> keep_stack;
+    std::vector<bool> keep_stack {};
     /// stack to manage which object keys to keep
-    std::vector<bool> key_keep_stack;
+    std::vector<bool> key_keep_stack {};
     /// helper to hold the reference for the next object element
     BasicJsonType* object_element = nullptr;
     /// whether a syntax error occurred

include/nlohmann/detail/input/lexer.hpp

@@ -3,16 +3,16 @@
 #include <array> // array
 #include <clocale> // localeconv
 #include <cstddef> // size_t
-#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
 #include <cstdio> // snprintf
+#include <cstdlib> // strtof, strtod, strtold, strtoll, strtoull
 #include <initializer_list> // initializer_list
 #include <string> // char_traits, string
 #include <utility> // move
 #include <vector> // vector
 
-#include <nlohmann/detail/macro_scope.hpp>
 #include <nlohmann/detail/input/input_adapters.hpp>
 #include <nlohmann/detail/input/position_t.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
 
 namespace nlohmann
 {
@@ -1485,7 +1485,7 @@ scan_number_done:
     bool next_unget = false;
 
     /// the start position of the current token
-    position_t position;
+    position_t position {};
 
     /// raw input token string (for error messages)
     std::vector<char> token_string {};

include/nlohmann/detail/input/parser.hpp

@@ -9,11 +9,11 @@
 #include <vector> // vector
 
 #include <nlohmann/detail/exceptions.hpp>
-#include <nlohmann/detail/macro_scope.hpp>
-#include <nlohmann/detail/meta/is_sax.hpp>
 #include <nlohmann/detail/input/input_adapters.hpp>
 #include <nlohmann/detail/input/json_sax.hpp>
 #include <nlohmann/detail/input/lexer.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
+#include <nlohmann/detail/meta/is_sax.hpp>
 #include <nlohmann/detail/value_t.hpp>
 
 namespace nlohmann