Minor warning fixes.

tdutils/td/utils/ScopeGuard.h

@@ -42,11 +42,11 @@ class LambdaGuard final : public Guard {
   }
   LambdaGuard &operator=(LambdaGuard &&other) = delete;
 
-  void dismiss() {
+  void dismiss() override {
     dismissed_ = true;
   }
 
-  ~LambdaGuard() {
+  ~LambdaGuard() override {
     if (!dismissed_) {
       func_();
     }

tdutils/td/utils/logging.h

@@ -128,6 +128,9 @@ struct LogOptions {
   }
 
   LogOptions &operator=(const LogOptions &other) {
+    if (this == &other) {
+      return *this;
+    }
     level = other.level.load();
     fix_newlines = other.fix_newlines;
     add_info = other.add_info;

tdutils/td/utils/port/FileFd.cpp

@@ -407,7 +407,7 @@ static Status create_local_lock(const string &path, int32 &max_tries) {
   }
 }
 
-Status FileFd::lock(const LockFlags flags, const string &path, int32 max_tries) {
+Status FileFd::lock(LockFlags flags, const string &path, int32 max_tries) {
   if (max_tries <= 0) {
     return Status::Error("Can't lock file: wrong max_tries");
   }

tdutils/td/utils/port/FileFd.h

@@ -45,7 +45,7 @@ class FileFd {
   Result<size_t> pread(MutableSlice slice, int64 offset) const TD_WARN_UNUSED_RESULT;
 
   enum class LockFlags { Write, Read, Unlock };
-  Status lock(const LockFlags flags, const string &path, int32 max_tries) TD_WARN_UNUSED_RESULT;
+  Status lock(LockFlags flags, const string &path, int32 max_tries) TD_WARN_UNUSED_RESULT;
   static void remove_local_lock(const string &path);
 
   PollableFdInfo &get_poll_info();

tdutils/td/utils/port/SocketFd.cpp

@@ -489,7 +489,7 @@ class SocketFdImpl {
       TRY_STATUS(get_pending_error());
     }
     int native_fd = get_native_fd().socket();
-    CHECK(slice.size() > 0);
+    CHECK(!slice.empty());
     auto read_res = detail::skip_eintr([&] { return ::read(native_fd, slice.begin(), slice.size()); });
     auto read_errno = errno;
     if (read_res >= 0) {

tdutils/td/utils/port/UdpSocketFd.cpp

@@ -59,7 +59,7 @@ class UdpSocketReceiveHelper {
     message_header.dwFlags = 0;
   }
 
-  void from_native(WSAMSG &message_header, size_t message_size, UdpMessage &message) {
+  static void from_native(WSAMSG &message_header, size_t message_size, UdpMessage &message) {
     message.address.init_sockaddr(reinterpret_cast<sockaddr *>(message_header.name), message_header.namelen).ignore();
     message.error = Status::OK();
 
@@ -387,7 +387,7 @@ class UdpSocketReceiveHelper {
     message_header.msg_flags = 0;
   }
 
-  void from_native(msghdr &message_header, size_t message_size, UdpSocketFd::InboundMessage &message) {
+  static void from_native(msghdr &message_header, size_t message_size, UdpSocketFd::InboundMessage &message) {
 #if TD_LINUX
     cmsghdr *cmsg;
     sock_extended_err *ee = nullptr;

tdutils/td/utils/port/detail/EventFdLinux.cpp

@@ -96,7 +96,7 @@ void EventFdLinux::acquire() {
   auto slice = MutableSlice(reinterpret_cast<char *>(&res), sizeof(res));
   auto native_fd = impl_->info.native_fd().fd();
   auto result = [&]() -> Result<size_t> {
-    CHECK(slice.size() > 0);
+    CHECK(!slice.empty());
     auto read_res = detail::skip_eintr([&] { return ::read(native_fd, slice.begin(), slice.size()); });
     auto read_errno = errno;
     if (read_res >= 0) {

tdutils/td/utils/port/detail/EventFdLinux.h

@@ -26,7 +26,7 @@ class EventFdLinux final : public EventFdBase {
   EventFdLinux();
   EventFdLinux(EventFdLinux &&) noexcept;
   EventFdLinux &operator=(EventFdLinux &&) noexcept;
-  ~EventFdLinux();
+  ~EventFdLinux() override;
 
   void init() final;
 

tdutils/td/utils/port/detail/ThreadPthread.h

@@ -72,7 +72,8 @@ class ThreadPthread {
     return std::forward<T>(v);
   }
 
-  int do_pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg);
+  static int do_pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine)(void *),
+                               void *arg);
 
   static void *run_thread(void *ptr) {
     ThreadIdGuard thread_id_guard;

tdutils/td/utils/port/signals.cpp

@@ -74,7 +74,7 @@ static void set_handler(struct sigaction &act, decltype(act.sa_sigaction) handle
   act.sa_flags |= SA_SIGINFO;
 }
 template <class F>
-static Status set_signal_handler_impl(vector<int> signals, F func) {
+static Status set_signal_handler_impl(vector<int> &&signals, F func) {
   struct sigaction act;
   std::memset(&act, '\0', sizeof(act));
 
@@ -123,7 +123,7 @@ static void signal_handler_func(int sig) {
   handler(sig);
 }
 
-static Status set_signal_handler_impl(vector<int> signals, void (*func)(int sig)) {
+static Status set_signal_handler_impl(vector<int> &&signals, void (*func)(int sig)) {
   for (auto signal : signals) {
     CHECK(0 <= signal && signal < NSIG);
     if (func != SIG_IGN && func != SIG_DFL) {
@@ -296,7 +296,7 @@ void signal_safe_write_signal_number(int sig, bool add_header) {
 }
 
 void signal_safe_write_pointer(void *p, bool add_header) {
-  std::uintptr_t addr = reinterpret_cast<std::uintptr_t>(p);
+  auto addr = reinterpret_cast<std::uintptr_t>(p);
   char buf[100];
   char *end = buf + sizeof(buf);
   char *ptr = end;

tdutils/td/utils/port/stacktrace.cpp

@@ -26,7 +26,7 @@ namespace td {
 
 namespace {
 
-void print_backtrace(void) {
+void print_backtrace() {
 #if TD_PORT_WINDOWS
   void *buffer[128];
   USHORT nptrs = CaptureStackBackTrace(0, 128, buffer, nullptr);
@@ -48,7 +48,7 @@ void print_backtrace(void) {
   signal_safe_write("-------------------------------\n", false);
 }
 
-void print_backtrace_gdb(void) {
+void print_backtrace_gdb() {
 #if TD_LINUX || TD_FREEBSD
   char pid_buf[30];
   char *pid_buf_begin = pid_buf + sizeof(pid_buf);