Merge branch 'master' into imprv-python-iface

Author: jtdavis777

.gitignore

@@ -156,4 +156,7 @@ kotlin/**/generated
 MODULE.bazel.lock
 
 # Ignore the generated docs
-docs/site
+docs/site
+
+# Ignore generated files
+*.fbs.h

CHANGELOG.md

@@ -4,6 +4,16 @@ All major or breaking changes will be documented in this file, as well as any
 new features that should be highlighted. Minor fixes or improvements are not
 necessarily listed.
 
+## [25.12.19] (December 19 2025)(https://github.com/google/flatbuffers/releases/tag/v25.12.19)
+
+* [C++] Default emptry vector support (#8870)
+* [C++] Add --gen-absl-hash option (#8868)
+* [Kotlin] Upgrade to MacOS 15 (#8845)
+* [C++] Fix vector of table with naked ptrs (#8830)
+* [Python] Optimize Offset/Pad/Prep (#8808)
+* Implement `--file-names-only` (#8788)
+* [C++] Fix size verifer (#8740)
+
 ## [25.9.23] (September 23 2025)(https://github.com/google/flatbuffers/releases/tag/v25.9.23)
 
 * flatc: `--grpc-callback-api` flag generates C++ gRPC Callback API server `CallbackService` skeletons AND client native callback/async stubs (unary + all streaming reactor forms) (opt-in, non-breaking, issue #8596).

CMake/Version.cmake

@@ -1,6 +1,6 @@
 set(VERSION_MAJOR 25)
-set(VERSION_MINOR 9)
-set(VERSION_PATCH 23)
+set(VERSION_MINOR 12)
+set(VERSION_PATCH 19)
 set(VERSION_COMMIT 0)
 
 if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git")

CMakeLists.txt

@@ -218,6 +218,8 @@ set(FlatHash_SRCS
 set(FlatBuffers_Tests_SRCS
   ${FlatBuffers_Library_SRCS}
   src/idl_gen_fbs.cpp
+  tests/default_vectors_strings_test.cpp
+  tests/default_vectors_strings_test.h
   tests/evolution_test.cpp
   tests/flexbuffers_test.cpp
   tests/fuzz_test.cpp
@@ -496,28 +498,34 @@ if(FLATBUFFERS_BUILD_SHAREDLIB)
   endif()
 endif()
 
-function(compile_schema SRC_FBS OPT OUT_GEN_FILE) 
+function(compile_schema SRC_FBS OPT SUFFIX OUT_GEN_FILE) 
   get_filename_component(SRC_FBS_DIR ${SRC_FBS} PATH)
-  string(REGEX REPLACE "\\.fbs$" "_generated.h" GEN_HEADER ${SRC_FBS})
+  string(REGEX REPLACE "\\.fbs$" "${SUFFIX}.h" GEN_HEADER ${SRC_FBS})
   add_custom_command(
     OUTPUT ${GEN_HEADER}
     COMMAND "${FLATBUFFERS_FLATC_EXECUTABLE}"
       ${OPT}
+      --filename-suffix ${SUFFIX}
       -o "${SRC_FBS_DIR}"
       "${CMAKE_CURRENT_SOURCE_DIR}/${SRC_FBS}"
     DEPENDS flatc ${SRC_FBS}
     COMMENT "flatc generation: `${SRC_FBS}` -> `${GEN_HEADER}`"
-    )
+  )
   set(${OUT_GEN_FILE} ${GEN_HEADER} PARENT_SCOPE)
 endfunction()
 
 function(compile_schema_for_test SRC_FBS OPT)
-  compile_schema("${SRC_FBS}" "${OPT}" GEN_FILE)
+  compile_schema("${SRC_FBS}" "${OPT}" "_generated" GEN_FILE)
+  target_sources(flattests PRIVATE ${GEN_FILE})
+endfunction()
+
+function(compile_schema_for_test_fbsh SRC_FBS OPT)
+  compile_schema("${SRC_FBS}" "${OPT}" ".fbs" GEN_FILE)
   target_sources(flattests PRIVATE ${GEN_FILE})
 endfunction()
 
 function(compile_schema_for_samples SRC_FBS OPT)
-  compile_schema("${SRC_FBS}" "${OPT}" GEN_FILE)
+  compile_schema("${SRC_FBS}" "${OPT}" "_generated" GEN_FILE)
   target_sources(flatsample PRIVATE ${GEN_FILE})
 endfunction()
 
@@ -542,6 +550,7 @@ if(FLATBUFFERS_BUILD_TESTS)
   SET(FLATC_OPT_SCOPED_ENUMS ${FLATC_OPT_COMP};--scoped-enums)
 
   compile_schema_for_test(tests/alignment_test.fbs "${FLATC_OPT_COMP}")
+  compile_schema_for_test_fbsh(tests/default_vectors_strings_test.fbs "${FLATC_OPT_COMP}")
   compile_schema_for_test(tests/arrays_test.fbs "${FLATC_OPT_SCOPED_ENUMS}")
   compile_schema_for_test(tests/native_inline_table_test.fbs "${FLATC_OPT_COMP}")
   compile_schema_for_test(tests/native_type_test.fbs "${FLATC_OPT_COMP}")
@@ -571,8 +580,6 @@ if(FLATBUFFERS_BUILD_TESTS)
 
   # Since flatsample has no sources, we have to explicitly set the linker lang.
   set_target_properties(flatsample PROPERTIES LINKER_LANGUAGE CXX)
-  
-  compile_schema_for_samples(samples/monster.fbs "${FLATC_OPT_COMP}")
 
   target_link_libraries(flatsamplebinary PRIVATE $<BUILD_INTERFACE:ProjectConfig> flatsample)
   target_link_libraries(flatsampletext PRIVATE $<BUILD_INTERFACE:ProjectConfig> flatsample)

FlatBuffers.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'FlatBuffers'
-  s.version          = '25.9.23'
+  s.version          = '25.12.19'
   s.summary          = 'FlatBuffers: Memory Efficient Serialization Library'
 
   s.description      = "FlatBuffers is a cross platform serialization library architected for

MODULE.bazel

@@ -1,6 +1,6 @@
 module(
     name = "flatbuffers",
-    version = "25.9.23",
+    version = "25.12.19",
     compatibility_level = 1,
     repo_name = "com_github_google_flatbuffers",
 )

android/app/proguard-rules.pro

@@ -15,25 +15,27 @@
  */
 
 #include <jni.h>
-#include <string>
 #include <search.h>
+
+#include <string>
+
 #include "generated/animal_generated.h"
 
 using namespace com::fbs::app;
 using namespace flatbuffers;
 
-extern "C" JNIEXPORT jbyteArray JNICALL Java_com_flatbuffers_app_MainActivity_createAnimalFromJNI(
-        JNIEnv* env,
-        jobject /* this */) {
-    // create a new animal flatbuffers
-    auto fb = FlatBufferBuilder(1024);
-    auto tiger = CreateAnimalDirect(fb, "Tiger", "Roar", 300);
-    fb.Finish(tiger);
+extern "C" JNIEXPORT jbyteArray JNICALL
+Java_com_flatbuffers_app_MainActivity_createAnimalFromJNI(JNIEnv* env,
+                                                          jobject /* this */) {
+  // create a new animal flatbuffers
+  auto fb = FlatBufferBuilder(1024);
+  auto tiger = CreateAnimalDirect(fb, "Tiger", "Roar", 300);
+  fb.Finish(tiger);
 
-    // copies it to a Java byte array.
-    auto buf = reinterpret_cast<jbyte*>(fb.GetBufferPointer());
-    int size = fb.GetSize();
-    auto ret = env->NewByteArray(size);
-    env->SetByteArrayRegion (ret, 0, fb.GetSize(), buf);
+  // copies it to a Java byte array.
+  auto buf = reinterpret_cast<jbyte*>(fb.GetBufferPointer());
+  int size = fb.GetSize();
+  auto ret = env->NewByteArray(size);
+  env->SetByteArrayRegion(ret, 0, fb.GetSize(), buf);
   return ret;
 }

android/app/src/main/cpp/animals.cpp

@@ -58,7 +58,7 @@ class Animal : Table() {
     }
 
   companion object {
-    fun validateVersion() = Constants.FLATBUFFERS_25_9_23()
+    fun validateVersion() = Constants.FLATBUFFERS_25_12_19()
 
     fun getRootAsAnimal(_bb: ByteBuffer): Animal = getRootAsAnimal(_bb, Animal())
 

android/app/src/main/java/generated/com/fbs/app/Animal.kt

@@ -5,40 +5,42 @@
 #include "benchmarks/cpp/flatbuffers/fb_bench.h"
 #include "benchmarks/cpp/raw/raw_bench.h"
 
-static inline void Encode(benchmark::State &state,
-                          std::unique_ptr<Bench> &bench, uint8_t *buffer) {
+static inline void Encode(benchmark::State& state,
+                          std::unique_ptr<Bench>& bench, uint8_t* buffer) {
   int64_t length;
   for (auto _ : state) {
     bench->Encode(buffer, length);
     benchmark::DoNotOptimize(length);
   }
 }
 
-static inline void Decode(benchmark::State &state,
-                          std::unique_ptr<Bench> &bench, uint8_t *buffer) {
+static inline void Decode(benchmark::State& state,
+                          std::unique_ptr<Bench>& bench, uint8_t* buffer) {
   int64_t length;
-  uint8_t *encoded = bench->Encode(buffer, length);
+  uint8_t* encoded = bench->Encode(buffer, length);
 
   for (auto _ : state) {
-    void *decoded = bench->Decode(encoded, length);
+    void* decoded = bench->Decode(encoded, length);
     benchmark::DoNotOptimize(decoded);
   }
 }
 
-static inline void Use(benchmark::State &state, std::unique_ptr<Bench> &bench,
-                       uint8_t *buffer, int64_t check_sum) {
+static inline void Use(benchmark::State& state, std::unique_ptr<Bench>& bench,
+                       uint8_t* buffer, int64_t check_sum) {
   int64_t length;
-  uint8_t *encoded = bench->Encode(buffer, length);
-  void *decoded = bench->Decode(encoded, length);
+  uint8_t* encoded = bench->Encode(buffer, length);
+  void* decoded = bench->Decode(encoded, length);
 
   int64_t sum = 0;
 
-  for (auto _ : state) { sum = bench->Use(decoded); }
+  for (auto _ : state) {
+    sum = bench->Use(decoded);
+  }
 
   EXPECT_EQ(sum, check_sum);
 }
 
-static void BM_Flatbuffers_Encode(benchmark::State &state) {
+static void BM_Flatbuffers_Encode(benchmark::State& state) {
   const int64_t kBufferLength = 1024;
   uint8_t buffer[kBufferLength];
 
@@ -48,7 +50,7 @@ static void BM_Flatbuffers_Encode(benchmark::State &state) {
 }
 BENCHMARK(BM_Flatbuffers_Encode);
 
-static void BM_Flatbuffers_Decode(benchmark::State &state) {
+static void BM_Flatbuffers_Decode(benchmark::State& state) {
   const int64_t kBufferLength = 1024;
   uint8_t buffer[kBufferLength];
 
@@ -58,7 +60,7 @@ static void BM_Flatbuffers_Decode(benchmark::State &state) {
 }
 BENCHMARK(BM_Flatbuffers_Decode);
 
-static void BM_Flatbuffers_Use(benchmark::State &state) {
+static void BM_Flatbuffers_Use(benchmark::State& state) {
   const int64_t kBufferLength = 1024;
   uint8_t buffer[kBufferLength];
 
@@ -68,7 +70,7 @@ static void BM_Flatbuffers_Use(benchmark::State &state) {
 }
 BENCHMARK(BM_Flatbuffers_Use);
 
-static void BM_Raw_Encode(benchmark::State &state) {
+static void BM_Raw_Encode(benchmark::State& state) {
   const int64_t kBufferLength = 1024;
   uint8_t buffer[kBufferLength];
 
@@ -77,7 +79,7 @@ static void BM_Raw_Encode(benchmark::State &state) {
 }
 BENCHMARK(BM_Raw_Encode);
 
-static void BM_Raw_Decode(benchmark::State &state) {
+static void BM_Raw_Decode(benchmark::State& state) {
   const int64_t kBufferLength = 1024;
   uint8_t buffer[kBufferLength];
 
@@ -86,7 +88,7 @@ static void BM_Raw_Decode(benchmark::State &state) {
 }
 BENCHMARK(BM_Raw_Decode);
 
-static void BM_Raw_Use(benchmark::State &state) {
+static void BM_Raw_Use(benchmark::State& state) {
   const int64_t kBufferLength = 1024;
   uint8_t buffer[kBufferLength];