diff --git a/src/aws/proxy/client_session_pool_test.cc b/src/aws/proxy/client_session_pool_test.cc
index 7f2e510a2..5d7e36826 100644
--- a/src/aws/proxy/client_session_pool_test.cc
+++ b/src/aws/proxy/client_session_pool_test.cc
@@ -18,6 +18,7 @@
 
 #include <gtest/gtest.h>
 
+#include <cstdlib>
 #include <memory>
 #include <thread>
 #include <utility>
@@ -80,47 +81,48 @@ TEST(ClientSessionPoolTest, TestBind) {
     socket_vendor::BindResponse bind_resp;
     asio::read(client_sock0, mutable_buffer(&bind_resp, sizeof(bind_resp)), ec);
     if (ec.failed()) {
-      exit(1);
+      std::exit(1);
     }
     socket_vendor::ListenResponse listen_resp;
     asio::read(client_sock0, mutable_buffer(&listen_resp, sizeof(listen_resp)),
                ec);
     if (ec.failed()) {
-      exit(1);
+      std::exit(1);
     }
     // Try to receive a FD
     uint8_t client_buff[128];
-    struct msghdr msg = {};
     struct iovec iov = {client_buff, sizeof(client_buff)};
-    msg.msg_iov = &iov;
-    msg.msg_iovlen = 1;
-
     union {
       struct cmsghdr align;
       char buf[CMSG_SPACE(sizeof(int))];
     } cmsgu;
 
-    msg.msg_control = cmsgu.buf;
-    msg.msg_controllen = sizeof(cmsgu.buf);
+    struct msghdr msg = {
+        .msg_iov = &iov,
+        .msg_iovlen = 1,
+        .msg_control = cmsgu.buf,
+        .msg_controllen = sizeof(cmsgu.buf),
+    };
     // client_sock0.wait(Socket::wait_read);
-    ssize_t bytes_recv = recvmsg(client_sock0.native_handle(), &msg, 0);
-    if (bytes_recv <= 0) {
-      exit(2);
+    if (ssize_t bytes_recv = recvmsg(client_sock0.native_handle(), &msg, 0);
+        bytes_recv <= 0) {
+      std::exit(2);
+    } else {
+      LOG(INFO) << "Client received " << bytes_recv << " bytes";
     }
-    LOG(INFO) << "Client received " << bytes_recv << " bytes";
     struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
     if (cmsg == nullptr) {
-      exit(3);
+      std::exit(3);
     }
     if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
-      exit(4);
+      std::exit(4);
     }
     int fd = -1;
     memcpy(&fd, CMSG_DATA(cmsg), sizeof(fd));
     if (fd <= 0) {
-      exit(5);
+      std::exit(5);
     }
-    exit(0);
+    std::exit(0);
   }
 
   asio::local::stream_protocol::socket proxy_client_sock(io_context);
diff --git a/src/core/blob_storage_provider/gcp/gcp_cloud_storage_stress_run.cc b/src/core/blob_storage_provider/gcp/gcp_cloud_storage_stress_run.cc
index 78447a9a7..f92d0b0b8 100644
--- a/src/core/blob_storage_provider/gcp/gcp_cloud_storage_stress_run.cc
+++ b/src/core/blob_storage_provider/gcp/gcp_cloud_storage_stress_run.cc
@@ -56,8 +56,8 @@ int ClearBucketIfPresent(Client& client) {
                   << std::endl;
         return EXIT_FAILURE;
       }
-      auto status = client.DeleteObject(kBucketName, obj_metadata->name());
-      if (!status.ok()) {
+      if (auto status = client.DeleteObject(kBucketName, obj_metadata->name());
+          !status.ok()) {
         std::cout << status.message() << std::endl;
         return EXIT_FAILURE;
       }
@@ -97,14 +97,14 @@ void WriteObjectOfByteCount(GcpCloudStorageClient& client, int64_t byte_count) {
       put_blob_context.request->buffer->capacity;
   put_blob_context.request->buffer->bytes->assign(byte_count, kBlobByte);
 
-  assert(client.PutBlob(put_blob_context).Successful());
+  ::assert(client.PutBlob(put_blob_context).Successful());
 
   while (!finished) {
   }
 
   if (!result.Successful()) {
     std::cerr << errors::GetErrorMessage(result.status_code) << std::endl;
-    exit(EXIT_FAILURE);
+    std::exit(EXIT_FAILURE);
   }
 }
 
@@ -119,9 +119,9 @@ int WriteAndGetBlob(int64_t byte_count) {
   CreateBucketIfNotExists(*client);
 
   auto async_executor =
-           std::make_shared<AsyncExecutor>(kThreadCount, kQueueSize),
-       io_async_executor =
-           std::make_shared<AsyncExecutor>(kThreadCount, kQueueSize);
+      std::make_shared<AsyncExecutor>(kThreadCount, kQueueSize);
+  auto io_async_executor =
+      std::make_shared<AsyncExecutor>(kThreadCount, kQueueSize);
 
   async_executor->Init();
   async_executor->Run();
@@ -134,9 +134,10 @@ int WriteAndGetBlob(int64_t byte_count) {
   WriteObjectOfByteCount(my_client, byte_count);
 
   AsyncContext<GetBlobRequest, GetBlobResponse> get_blob_context;
-  get_blob_context.request = std::make_shared<GetBlobRequest>(
-      GetBlobRequest{std::make_shared<std::string>(kBucketName),
-                     std::make_shared<std::string>(kDefaultBlobName)});
+  get_blob_context.request = std::make_shared<GetBlobRequest>(GetBlobRequest{
+      std::make_shared<std::string>(kBucketName),
+      std::make_shared<std::string>(kDefaultBlobName),
+  });
 
   int return_status;
   std::atomic_bool finished(false);
@@ -194,16 +195,17 @@ int WriteAndGetBlob(int64_t byte_count) {
 }  // namespace
 }  // namespace google::scp::core::test
 
-constexpr int64_t kBytesCount = 100, kKiloBytesCount = 1000,
-                  kMegaBytesCount = 1000 * kKiloBytesCount,
-                  kGigaBytesCount = 1000 * kMegaBytesCount,
-                  k10GigaBytesCount = 10 * kGigaBytesCount,
-                  kTeraBytesCount = 1000 * kGigaBytesCount;
+constexpr int64_t kBytesCount = 100;
+constexpr int64_t kKiloBytesCount = 1000;
+constexpr int64_t kMegaBytesCount = 1000 * kKiloBytesCount;
+constexpr int64_t kGigaBytesCount = 1000 * kMegaBytesCount;
+constexpr int64_t k10GigaBytesCount = 10 * kGigaBytesCount;
+constexpr int64_t kTeraBytesCount = 1000 * kGigaBytesCount;
 
 int main(int argc, char* argv[]) {
   for (auto count :
-       {kBytesCount, kKiloBytesCount, kMegaBytesCount,
-        kGigaBytesCount /*, k10GigaBytesCount, kTeraBytesCount*/}) {
+       {kBytesCount, kKiloBytesCount, kMegaBytesCount, kGigaBytesCount,
+        /*, k10GigaBytesCount, kTeraBytesCount*/}) {
     if (google::scp::core::test::WriteAndGetBlob(count) != EXIT_SUCCESS) {
       return EXIT_FAILURE;
     }
diff --git a/src/core/test/utils/http1_helper/test_http1_server.cc b/src/core/test/utils/http1_helper/test_http1_server.cc
index 1494d750f..d71e1083a 100644
--- a/src/core/test/utils/http1_helper/test_http1_server.cc
+++ b/src/core/test/utils/http1_helper/test_http1_server.cc
@@ -15,6 +15,7 @@
  */
 #include "test_http1_server.h"
 
+#include <cstdlib>
 #include <string>
 #include <utility>
 
@@ -31,33 +32,35 @@ void HandleErrorIfPresent(const boost::system::error_code& ec,
                           std::string stage) {
   if (ec) {
     std::cerr << stage << " failed: " << ec << std::endl;
-    exit(EXIT_FAILURE);
+    std::exit(EXIT_FAILURE);
   }
 }
 }  // namespace
 
 // Uses the C socket library to bind to an unused port, close that socket then
 // return that port number.
-ExecutionResultOr<in_port_t> GetUnusedPortNumber() {
-  int sockfd = socket(AF_INET, SOCK_STREAM, 0);
+ExecutionResultOr<::in_port_t> GetUnusedPortNumber() {
+  int sockfd = ::socket(AF_INET, SOCK_STREAM, 0);
   if (sockfd < 0) {
     return FailureExecutionResult(
         errors::SC_TEST_HTTP1_SERVER_ERROR_GETTING_SOCKET);
   }
-  sockaddr_in server_addr;
-  socklen_t server_len = sizeof(server_addr);
-  server_addr.sin_family = AF_INET;
-  server_addr.sin_port = 0;
+  ::sockaddr_in server_addr = {
+      .sin_family = AF_INET,
+      .sin_port = 0,
+  };
   server_addr.sin_addr.s_addr = INADDR_ANY;
-  if (bind(sockfd, reinterpret_cast<sockaddr*>(&server_addr), server_len) < 0) {
+  ::socklen_t server_len = sizeof(server_addr);
+  if (::bind(sockfd, reinterpret_cast<::sockaddr*>(&server_addr), server_len) <
+      0) {
     return FailureExecutionResult(errors::SC_TEST_HTTP1_SERVER_ERROR_BINDING);
   }
-  if (getsockname(sockfd, reinterpret_cast<sockaddr*>(&server_addr),
-                  &server_len) < 0) {
+  if (::getsockname(sockfd, reinterpret_cast<::sockaddr*>(&server_addr),
+                    &server_len) < 0) {
     return FailureExecutionResult(
         errors::SC_TEST_HTTP1_SERVER_ERROR_GETTING_SOCKET_NAME);
   }
-  close(sockfd);
+  ::close(sockfd);
   return server_addr.sin_port;
 }
 
@@ -79,7 +82,7 @@ TestHttp1Server::TestHttp1Server() {
           ReadFromSocketAndWriteResponse(socket);
         } else {
           std::cerr << "accept failed: " << ec << std::endl;
-          exit(EXIT_FAILURE);
+          std::exit(EXIT_FAILURE);
         }
       });
       {
@@ -128,7 +131,7 @@ void TestHttp1Server::ReadFromSocketAndWriteResponse(tcp::socket& socket) {
   HandleErrorIfPresent(ec, "close");
 }
 
-in_port_t TestHttp1Server::PortNumber() const { return port_number_; }
+::in_port_t TestHttp1Server::PortNumber() const { return port_number_; }
 
 std::string TestHttp1Server::GetPath() const {
   return "http://localhost:" + std::to_string(port_number_);
diff --git a/src/core/test/utils/http1_helper/test_http1_server.h b/src/core/test/utils/http1_helper/test_http1_server.h
index 0acddf688..3f84ad432 100644
--- a/src/core/test/utils/http1_helper/test_http1_server.h
+++ b/src/core/test/utils/http1_helper/test_http1_server.h
@@ -35,7 +35,7 @@
 namespace google::scp::core::test {
 
 // Returns an unused TCP port number.
-ExecutionResultOr<in_port_t> GetUnusedPortNumber();
+ExecutionResultOr<::in_port_t> GetUnusedPortNumber();
 
 // Lightweight Boost HTTP/1.1 server.
 // After the constructor returns, the server is ready to accept incoming
@@ -46,7 +46,7 @@ class TestHttp1Server {
   TestHttp1Server();
 
   // Gets the port number the server is running on.
-  in_port_t PortNumber() const;
+  ::in_port_t PortNumber() const;
 
   // Gets the full path to this server i.e. 'http://localhost:8080'
   std::string GetPath() const;
@@ -92,7 +92,7 @@ class TestHttp1Server {
   absl::Mutex has_run_mu_;
   bool has_run_ ABSL_GUARDED_BY(has_run_mu_) = false;
 
-  in_port_t port_number_ = 0;
+  ::in_port_t port_number_ = 0;
 
   // Indicates when thread should exit (false).
   std::atomic_bool run_{true};
diff --git a/src/cpio/client_providers/kms_client_provider/aws/tee_aws_kms_client_provider_utils.cc b/src/cpio/client_providers/kms_client_provider/aws/tee_aws_kms_client_provider_utils.cc
index af73e4a0c..246321681 100644
--- a/src/cpio/client_providers/kms_client_provider/aws/tee_aws_kms_client_provider_utils.cc
+++ b/src/cpio/client_providers/kms_client_provider/aws/tee_aws_kms_client_provider_utils.cc
@@ -18,6 +18,8 @@
 
 #include <sys/wait.h>
 
+#include <cstdio>
+#include <cstdlib>
 #include <string>
 #include <string_view>
 
@@ -29,25 +31,25 @@ namespace google::scp::cpio::client_providers::utils {
 
 absl::StatusOr<std::string> Exec(absl::Span<const char* const> args) noexcept {
   int fd[2];
-  if (pipe(fd) == -1) {
+  if (::pipe(fd) == -1) {
     return absl::ErrnoToStatus(errno, "Exec failed to create a pipe.");
   }
-  const pid_t pid = fork();
+  const ::pid_t pid = fork();
   if (pid == 0) {
-    close(fd[0]);
+    ::close(fd[0]);
 
     // Redirect child standard output to pipe and execute.
-    if (dup2(fd[1], STDOUT_FILENO) == -1 ||
-        execv(args[0], const_cast<char* const*>(&args[0])) == -1) {
-      exit(errno);
+    if (::dup2(fd[1], STDOUT_FILENO) == -1 ||
+        ::execv(args[0], const_cast<char* const*>(&args[0])) == -1) {
+      std::exit(errno);
     }
   } else if (pid == -1) {
     return absl::ErrnoToStatus(errno, "Exec failed to fork a child.");
   }
 
   // Only parent gets here (pid > 0).
-  close(fd[1]);
-  if (int status; waitpid(pid, &status, /*options=*/0) == -1) {
+  ::close(fd[1]);
+  if (int status; ::waitpid(pid, &status, /*options=*/0) == -1) {
     return absl::ErrnoToStatus(errno, "Exec failed to wait for child.");
   } else if (!WIFEXITED(status)) {
     return absl::InternalError(absl::StrCat(
@@ -62,9 +64,9 @@ absl::StatusOr<std::string> Exec(absl::Span<const char* const> args) noexcept {
                      absl::StrJoin(args, " "), "'"));
   }
   std::string result;
-  if (FILE* const stream = fdopen(fd[0], "r"); stream != nullptr) {
+  if (FILE* const stream = ::fdopen(fd[0], "r"); stream != nullptr) {
     std::array<char, 1024> buffer;
-    while (fgets(buffer.data(), buffer.size(), stream) != nullptr) {
+    while (std::fgets(buffer.data(), buffer.size(), stream) != nullptr) {
       result += buffer.data();
     }
   } else {
diff --git a/src/public/cpio/examples/blob_storage_client_test.cc b/src/public/cpio/examples/blob_storage_client_test.cc
index 22d9aa6f1..3936c1ce2 100644
--- a/src/public/cpio/examples/blob_storage_client_test.cc
+++ b/src/public/cpio/examples/blob_storage_client_test.cc
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include <cstdlib>
 #include <memory>
 #include <utility>
 
@@ -94,13 +95,13 @@ int main(int argc, char* argv[]) {
     if (absl::Status error = blob_storage_client->PutBlob(put_blob_context);
         !error.ok()) {
       std::cerr << "Putting blob failed: " << error << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
     finished.WaitForNotification();
     if (!result.Successful()) {
       std::cerr << "Putting blob failed asynchronously: "
                 << GetErrorMessage(result.status_code) << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
   }
   {
@@ -121,13 +122,13 @@ int main(int argc, char* argv[]) {
     if (absl::Status error = blob_storage_client->GetBlob(get_blob_context);
         !error.ok()) {
       std::cerr << "Getting blob failed: " << error << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
     finished.WaitForNotification();
     if (!result.Successful()) {
       std::cerr << "Getting blob failed asynchronously: "
                 << GetErrorMessage(result.status_code) << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
   }
   {
@@ -153,13 +154,13 @@ int main(int argc, char* argv[]) {
             blob_storage_client->ListBlobsMetadata(list_blobs_metadata_context);
         !error.ok()) {
       std::cerr << "Listing blobs failed: " << error << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
     finished.WaitForNotification();
     if (!result.Successful()) {
       std::cerr << "Listing blobs failed asynchronously: "
                 << GetErrorMessage(result.status_code) << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
   }
   {
@@ -179,13 +180,13 @@ int main(int argc, char* argv[]) {
             blob_storage_client->DeleteBlob(delete_blob_context);
         !error.ok()) {
       std::cerr << "Deleting blob failed: " << error << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
     finished.WaitForNotification();
     if (!result.Successful()) {
       std::cerr << "Deleting blob failed asynchronously: "
                 << GetErrorMessage(result.status_code) << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
   }
 
@@ -217,7 +218,7 @@ int main(int argc, char* argv[]) {
             blob_storage_client->PutBlobStream(put_blob_stream_context);
         !error.ok()) {
       std::cerr << "Putting blob failed: " << error << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
     // After this point, the client is waiting for elements to be pushed
     // onto the queue.
@@ -233,14 +234,14 @@ int main(int argc, char* argv[]) {
     if (auto result = put_blob_stream_context.TryPushRequest(request);
         !result.Successful()) {
       std::cerr << "Failed enqueueing a new element" << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
 
     request.mutable_blob_portion()->set_data(" data");
     if (auto result = put_blob_stream_context.TryPushRequest(request);
         !result.Successful()) {
       std::cerr << "Failed enqueueing a new element" << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
 
     // Marking the context done here tells the client to finalize the upload
@@ -251,7 +252,7 @@ int main(int argc, char* argv[]) {
     if (!result.Successful()) {
       std::cerr << "Putting blob failed asynchronously: "
                 << GetErrorMessage(result.status_code) << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
   }
   {
@@ -291,7 +292,7 @@ int main(int argc, char* argv[]) {
     if (!result.Successful()) {
       std::cerr << "Getting blob stream failed asynchronously: "
                 << GetErrorMessage(result.status_code) << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
   }
   {
@@ -318,7 +319,7 @@ int main(int argc, char* argv[]) {
             blob_storage_client->GetBlobStream(get_blob_stream_context);
         !error.ok()) {
       std::cerr << "Getting blob stream failed: " << error << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
 
     std::unique_ptr<GetBlobStreamResponse> resp = nullptr;
@@ -343,7 +344,7 @@ int main(int argc, char* argv[]) {
     if (!result.Successful()) {
       std::cerr << "Getting blob stream failed asynchronously: "
                 << GetErrorMessage(result.status_code) << std::endl;
-      exit(EXIT_FAILURE);
+      std::exit(EXIT_FAILURE);
     }
   }
 #endif
diff --git a/src/roma/tools/v8_cli/v8_shell.cc b/src/roma/tools/v8_cli/v8_shell.cc
index d6bde02ad..db6b6b1e5 100644
--- a/src/roma/tools/v8_cli/v8_shell.cc
+++ b/src/roma/tools/v8_cli/v8_shell.cc
@@ -31,6 +31,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <cstdlib>
+
 #include "include/libplatform/libplatform.h"
 #include "include/v8.h"
 
@@ -147,7 +149,7 @@ void Quit(const v8::FunctionCallbackInfo<v8::Value>& info) {
       info[0]->Int32Value(info.GetIsolate()->GetCurrentContext()).FromMaybe(0);
   fflush(stdout);
   fflush(stderr);
-  exit(exit_code);
+  std::exit(exit_code);
 }
 
 // The callback that is invoked by v8 whenever the JavaScript 'version'