Updated to the latest version of flatbuffers.

Author: akb825

Shared/external/flatbuffers/base.h

@@ -139,8 +139,8 @@
 #endif // !defined(FLATBUFFERS_LITTLEENDIAN)
 
 #define FLATBUFFERS_VERSION_MAJOR 23
-#define FLATBUFFERS_VERSION_MINOR 1
-#define FLATBUFFERS_VERSION_REVISION 21
+#define FLATBUFFERS_VERSION_MINOR 3
+#define FLATBUFFERS_VERSION_REVISION 3
 #define FLATBUFFERS_STRING_EXPAND(X) #X
 #define FLATBUFFERS_STRING(X) FLATBUFFERS_STRING_EXPAND(X)
 namespace flatbuffers {
@@ -233,7 +233,7 @@ namespace flatbuffers {
       }
       #define FLATBUFFERS_HAS_STRING_VIEW 1
     // Check for absl::string_view
-    #elif __has_include("absl/strings/string_view.h")
+    #elif __has_include("absl/strings/string_view.h") && (__cplusplus >= 201411)
       #include "absl/strings/string_view.h"
       namespace flatbuffers {
         typedef absl::string_view string_view;

Shared/external/flatbuffers/stl_emulation.h

@@ -41,15 +41,18 @@
   #include <optional>
 #endif
 
-// The __cpp_lib_span is the predefined feature macro.
-#if defined(FLATBUFFERS_USE_STD_SPAN)
-    #include <span>
-#elif defined(__cpp_lib_span) && defined(__has_include)
-  #if __has_include(<span>)
-    #include <array>
-    #include <span>
-    #define FLATBUFFERS_USE_STD_SPAN
+#ifndef FLATBUFFERS_USE_STD_SPAN
+  // Testing __cpp_lib_span requires including either <version> or <span>,
+  // both of which were added in C++20.
+  // See: https://en.cppreference.com/w/cpp/utility/feature_test
+  #if defined(__cplusplus) && __cplusplus >= 202002L
+    #define FLATBUFFERS_USE_STD_SPAN 1
   #endif
+#endif // FLATBUFFERS_USE_STD_SPAN
+
+#if defined(FLATBUFFERS_USE_STD_SPAN)
+  #include <array>
+  #include <span>
 #else
   // Disable non-trivial ctors if FLATBUFFERS_SPAN_MINIMAL defined.
   #if !defined(FLATBUFFERS_TEMPLATES_ALIASES)

Shared/mslb_generated.h

@@ -9,8 +9,8 @@
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 23 &&
-              FLATBUFFERS_VERSION_MINOR == 1 &&
-              FLATBUFFERS_VERSION_REVISION == 21,
+              FLATBUFFERS_VERSION_MINOR == 3 &&
+              FLATBUFFERS_VERSION_REVISION == 3,
              "Non-compatible flatbuffers version included");
 
 namespace mslb {