diff --git a/CMakeLists.txt b/CMakeLists.txt
index 35e4e8dad17779ecf7110f5454c4724bf896c1d3..a61a37ae32068958b8c6c445e4e18072f1044ee2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.2)
 
 project(distributed_ut VERSION 1.0.0)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -std=c++17 -pthread")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -std=c++17 -pthread -Werror=vla")
 
 add_compile_options(-Werror=sign-compare -Werror=unused-variable)
 add_compile_options(-Wno-conversion-null)
diff --git a/frameworks/libs/distributeddb/BUILD.gn b/frameworks/libs/distributeddb/BUILD.gn
index b85586a8d069b5d7c08e0c463e123c7120a7fa92..f288cc35f5164eaea01eada5290bc5f84a82b14f 100644
--- a/frameworks/libs/distributeddb/BUILD.gn
+++ b/frameworks/libs/distributeddb/BUILD.gn
@@ -117,6 +117,7 @@ ohos_shared_library("distributeddb") {
     "-Os",
     "-D_FORTIFY_SOURCE=2",
     "-flto",
+    "-Werror=vla",
   ]
   deps = [ "gaussdb_rd:gaussdb_rd" ]
 
@@ -177,6 +178,7 @@ ohos_shared_library("customtokenizer") {
     "-fvisibility=hidden",
     "-Os",
     "-D_FORTIFY_SOURCE=2",
+    "-Werror=vla",
   ]
 
   external_deps = [
@@ -273,6 +275,7 @@ ohos_shared_library("distributeddb_client") {
     "-Os",
     "-D_FORTIFY_SOURCE=2",
     "-flto",
+    "-Werror=vla",
   ]
 
   external_deps = [
diff --git a/frameworks/libs/distributeddb/test/BUILD.gn b/frameworks/libs/distributeddb/test/BUILD.gn
index 04111eb8335725aacdad5bec7891d9e965ec3621..03371310e15d9c446345fae89ed21db6ea1b4be0 100644
--- a/frameworks/libs/distributeddb/test/BUILD.gn
+++ b/frameworks/libs/distributeddb/test/BUILD.gn
@@ -990,7 +990,9 @@ ohos_unittest("tokenizer_test") {
   sources += [ "//foundation/distributeddatamgr/kv_store/frameworks/libs/distributeddb/common/src/log_print.cpp" ]
 
   configs = [ ":tokenizer_config_unittest" ]
-  cflags_cc = []
+  cflags_cc = [
+    "-Werror=vla",
+  ]
 
   external_deps = [
     "c_utils:utils",
diff --git a/frameworks/libs/distributeddb/test/unittest/common/syncer/cloud/distributeddb_cloud_async_download_assets_test.cpp b/frameworks/libs/distributeddb/test/unittest/common/syncer/cloud/distributeddb_cloud_async_download_assets_test.cpp
index d661f1adb631e0147fc155466051d8c90217e831..cfa51878e4f9f8366925a58fe3f654e65e7b37d5 100644
--- a/frameworks/libs/distributeddb/test/unittest/common/syncer/cloud/distributeddb_cloud_async_download_assets_test.cpp
+++ b/frameworks/libs/distributeddb/test/unittest/common/syncer/cloud/distributeddb_cloud_async_download_assets_test.cpp
@@ -1023,17 +1023,16 @@ HWTEST_F(DistributedDBCloudAsyncDownloadAssetsTest, AsyncNormalDownload005, Test
     auto schema = GetSchema();
     int threadNum = 10;
     CloudSyncOption option = GetAsyncCloudSyncOption();
-    thread *syncThreads[threadNum];
+    std::vector<std::thread> syncThreads;
     for (int i = 0; i < threadNum; i++) {
-        syncThreads[i] = new thread([&]() {
+        syncThreads.emplace_back([&]() {
             EXPECT_EQ(RDBDataGenerator::InsertCloudDBData(0, cloudCount, 0, schema, virtualCloudDb_), OK);
             RelationalTestUtils::CloudBlockSync(option, delegate_);
             DeleteLocalData(db_, "AsyncDownloadAssetsTest");
         });
     }
     for (auto &thread : syncThreads) {
-        thread->join();
-        delete thread;
+        thread.join();
     }
     auto manager = RuntimeContext::GetInstance()->GetAssetsDownloadManager();
     ASSERT_NE(manager, nullptr);