diff --git a/isa/gen_wrapper.sh b/isa/gen_wrapper.sh
index ba5c4ebdf94986a20d2a10ff4562a2282c691300..4e470348440359228fcf5ceac1c57c58a1b9f6e7 100644
--- a/isa/gen_wrapper.sh
+++ b/isa/gen_wrapper.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Copyright (c) 2021 Huawei Device Co., Ltd.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,7 +14,7 @@
 
 set -e
 
-TOP=`pwd`
+TOP=$(pwd)
 CMD=${TOP}/panda/isa/gen.rb
 ISA_DATA=${TOP}/panda/isa/isa.yaml
 ISA_REQUIRE=${TOP}/panda/isa/isapi.rb
@@ -30,7 +30,7 @@ if [ $? != 0  ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
 
 while getopts "O:D:R:I" arg
 do
-    case $arg in
+    case "$arg" in
         O)
             OUTPUT=${OPTARG}
             ;;
@@ -51,7 +51,7 @@ do
 done
 shift $(($OPTIND - 1))
 
-if [ ${HAS_ISA} ];then
+if [ "${HAS_ISA}" ];then
     DATA=${ISA_DATA}
     REQUIRE=${ISA_REQUIRE},${REQUIRE}
 fi
diff --git a/libpandafile/tests/file_item_container_test.cpp b/libpandafile/tests/file_item_container_test.cpp
index 5f86c7ee998239bf453805495cb026218bab5dd2..4c63f227291a6762525c48cfd1d3cadae6fd0813 100644
--- a/libpandafile/tests/file_item_container_test.cpp
+++ b/libpandafile/tests/file_item_container_test.cpp
@@ -35,6 +35,8 @@
 #include <memory>
 #include <vector>
 
+#include <securec.h>
+
 #include <gtest/gtest.h>
 #include <gmock/gmock.h>
 
@@ -142,7 +144,7 @@ TEST(ItemContainer, TestFileFormatVersionValid)
         auto writer = FileWriter(file_name);
 
         File::Header header;
-        memset(&header, 0, sizeof(header));
+        (void)memset_s(&header, sizeof(header), 0, sizeof(header));
         header.magic = File::MAGIC;
         header.version = {0, 0, 0, 2};
         header.file_size = sizeof(File::Header);
diff --git a/runtime/BUILD.gn b/runtime/BUILD.gn
index e4d9aee1afb9fd2f460cf32f5d5dd5f47ba3b246..31165dddb99529da0094a56612e9d16f6639b9c9 100644
--- a/runtime/BUILD.gn
+++ b/runtime/BUILD.gn
@@ -39,7 +39,6 @@ config("arkruntime_config") {
   cflags_cc = [
     "-Wno-invalid-offsetof",
     "-Wno-unused-parameter",
-    "-Wno-implicit-fallthrough",
   ]
 }
 
@@ -276,7 +275,6 @@ config("arkruntime_interpreter_impl_config") {
   cflags_cc = [
     "-Wno-invalid-offsetof",
     "-Wno-unused-parameter",
-    "-Wno-implicit-fallthrough",
   ]
   defines = []
 
diff --git a/runtime/class_linker.cpp b/runtime/class_linker.cpp
index 08fc3b2ef445ca23932011351414a44fc4c9a16c..f79fdada4e4b283b0b01d5f3f0f3915818cf44b7 100644
--- a/runtime/class_linker.cpp
+++ b/runtime/class_linker.cpp
@@ -496,7 +496,7 @@ static size_t LayoutFields(Class *klass, PandaList<Field *> *tagged_fields, Pand
     if (is_static) {
         offset = klass->GetStaticFieldsOffset();
     } else {
-        offset = klass->GetBase() != nullptr ? klass->GetBase()->GetObjectSize() : ObjectHeader::ObjectHeaderSize();
+        offset = (klass->GetBase() != nullptr) ? klass->GetBase()->GetObjectSize() : ObjectHeader::ObjectHeaderSize();
     }
 
     if (!ref_fields->empty()) {
diff --git a/runtime/mark_word.h b/runtime/mark_word.h
index a2dbf7c57501211677ba74ecc99cf74f4fa62091..557216db9c39e0ab83cce579115f50b6f40c1397 100644
--- a/runtime/mark_word.h
+++ b/runtime/mark_word.h
@@ -120,7 +120,7 @@ public:
         // If we don't have Hash inside an object header, thisThread constant shouldn't be used
         HASH_SIZE = (CONFIG_HASH_STATUS_SIZE != 0UL)
                         ? 0UL
-                        : CONFIG_MARK_WORD_BIT_SIZE - STATUS_SIZE - GC_STATUS_SIZE - RB_STATUS_SIZE,
+                        : (CONFIG_MARK_WORD_BIT_SIZE - STATUS_SIZE - GC_STATUS_SIZE - RB_STATUS_SIZE),
         FORWARDING_ADDRESS_SIZE = CONFIG_MARK_WORD_BIT_SIZE - STATUS_SIZE - HASH_STATUS_SIZE,
 
         // Unlocked state masks and shifts
diff --git a/runtime/runtime.cpp b/runtime/runtime.cpp
index 893adc8d42d373b4b14ba75f623cc1b8b0b6d47b..e0e1a673a17bd7e610b42ac6a81a6a17a9b3ddfd 100644
--- a/runtime/runtime.cpp
+++ b/runtime/runtime.cpp
@@ -866,7 +866,7 @@ Expected<int, Runtime::Error> Runtime::ExecutePandaFile(std::string_view filenam
         // Create app name from path to executable file.
         std::string_view app_name = [](std::string_view path) -> std::string_view {
             auto pos = path.find_last_of('/');
-            return path.substr(pos == std::string_view::npos ? 0 : pos + 1);
+            return path.substr((pos == std::string_view::npos) ? 0 : (pos + 1));
         }(filename);
         StartDProfiler(app_name);
     }
@@ -900,7 +900,7 @@ void Runtime::RegisterAppInfo(const PandaVector<PandaString> &code_paths, const
     }
     std::string_view app_name = [](std::string_view path) -> std::string_view {
         auto pos = path.find_last_of('/');
-        return path.substr(pos == std::string_view::npos ? 0 : pos + 1);
+        return path.substr((pos == std::string_view::npos) ? 0 : (pos + 1));
     }(profile_output_filename);
 
     StartDProfiler(app_name);
diff --git a/scripts/extra/build.sh b/scripts/extra/build.sh
index e3b567a10b26dcc2f92b68060f7a43d2f8b7f02b..979541c32d7cf2e5fc186205ea3c739635e02e57 100755
--- a/scripts/extra/build.sh
+++ b/scripts/extra/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash -ex
+#!/bin/bash
 # Copyright (c) 2021 Huawei Device Co., Ltd.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,8 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+set -ex
 
-if [[ ${BUILD_TOOL} = "ninja" ]]; then
+if [[ "${BUILD_TOOL}" = "ninja" ]]; then
     GENERATOR="Ninja"
     BUILD_STR="ninja -k1"
 else
diff --git a/scripts/memdump.py b/scripts/memdump.py
index 0cea92660c0e4a66c440908c9b9edd9de7f2a880..e8fd40163e6d865accdfcb118da2ef462b5b7b55 100755
--- a/scripts/memdump.py
+++ b/scripts/memdump.py
@@ -1,4 +1,4 @@
-#!/bin/python3
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 # Copyright (c) 2021 Huawei Device Co., Ltd.
 # Licensed under the Apache License, Version 2.0 (the "License");