Fix Flatbuffer's upstream error on GetTemporaryPointer()

PiperOrigin-RevId: 634885829

RELEASE.md

@@ -87,6 +87,8 @@
     * The Python TF Lite Interpreter bindings now have an option
       `experimental_default_delegate_latest_features` to enable all default
       delegate features.
+    * Flatbuffer version update:
+        * `GetTemporaryPointer()` bug fixed.
 
 * `tf.data`
     * Add `wait` to `tf.data.Dataset.load`. If `True`, for snapshots written

tensorflow/lite/tools/cmake/modules/flatbuffers.cmake

@@ -23,8 +23,9 @@ OverridableFetchContent_Declare(
   flatbuffers
   GIT_REPOSITORY https://github.com/google/flatbuffers
   # Sync with tensorflow/third_party/flatbuffers/workspace.bzl
-  GIT_TAG v24.3.25
-  GIT_SHALLOW TRUE
+  GIT_TAG e6463926479bd6b330cbcf673f7e917803fd5831
+  # NOTE: b/340264458 - `GIT_SHALLOW TRUE` works for tag name only.
+  GIT_SHALLOW FALSE
   GIT_PROGRESS TRUE
   SOURCE_DIR "${CMAKE_BINARY_DIR}/flatbuffers"
 )

third_party/flatbuffers/workspace.bzl

@@ -5,10 +5,10 @@ load("//third_party:repo.bzl", "tf_http_archive", "tf_mirror_urls")
 # _FLATBUFFERS_GIT_COMMIT / _FLATBUFFERS_SHA256 were added due to an urgent change being made to
 # Flatbuffers that needed to be updated in order for Flatbuffers/TfLite be compatible with Android
 # API level >= 23. They can be removed next flatbuffers offical release / update.
-_FLATBUFFERS_GIT_COMMIT = "595bf0007ab1929570c7671f091313c8fc20644e"
+_FLATBUFFERS_GIT_COMMIT = "e6463926479bd6b330cbcf673f7e917803fd5831"
 
 # curl -L https://github.com/google/flatbuffers/archive/<_FLATBUFFERS_GIT_COMMIT>.tar.gz | shasum -a 256
-_FLATBUFFERS_SHA256 = "987300083ec1f1b095d5596ef8fb657ba46c45d786bc866a5e9029d7590a5e48"
+_FLATBUFFERS_SHA256 = "c9c6b8653597ed7ee5c62243979010bd0f09b29a46be414505bc5b58a874bb17"
 
 def repo():
     tf_http_archive(