executor: update flatbuffers

Update flatbuffers to v23.5.26, which matches the compiler version in the new env container.

1 files changed, 16 insertions, 2 deletions

diff --git a/executor/_include/flatbuffers/flatbuffers.h b/executor/_include/flatbuffers/flatbuffers.h
index 642178897..bc828a313 100644
--- a/executor/_include/flatbuffers/flatbuffers.h
+++ b/executor/_include/flatbuffers/flatbuffers.h
@@ -17,6 +17,8 @@
 #ifndef FLATBUFFERS_H_
 #define FLATBUFFERS_H_
 
+#include <algorithm>
+
 // TODO: These includes are for mitigating the pains of users editing their
 // source because they relied on flatbuffers.h to include everything for them.
 #include "flatbuffers/array.h"
@@ -74,8 +76,20 @@ inline const uint8_t *GetBufferStartFromRootPointer(const void *root) {
 }
 
 /// @brief This return the prefixed size of a FlatBuffer.
-inline uoffset_t GetPrefixedSize(const uint8_t *buf) {
-  return ReadScalar<uoffset_t>(buf);
+template<typename SizeT = uoffset_t>
+inline SizeT GetPrefixedSize(const uint8_t *buf) {
+  return ReadScalar<SizeT>(buf);
+}
+
+// Gets the total length of the buffer given a sized prefixed FlatBuffer.
+//
+// This includes the size of the prefix as well as the buffer:
+//
+//  [size prefix][flatbuffer]
+//  |---------length--------|
+template<typename SizeT = uoffset_t>
+inline SizeT GetSizePrefixedBufferLength(const uint8_t *const buf) {
+  return ReadScalar<SizeT>(buf) + sizeof(SizeT);
 }
 
 // Base class for native objects (FlatBuffer data de-serialized into native