Add C++11 override qualifiers to overridden virtual member functions

asio/include/asio/basic_streambuf.hpp

@@ -260,7 +260,7 @@ class basic_streambuf
   /**
    * Behaves according to the specification of @c std::streambuf::underflow().
    */
-  int_type underflow()
+  int_type underflow() override
   {
     if (gptr() < pptr())
     {
@@ -280,7 +280,7 @@ class basic_streambuf
    * the character to the input sequence would require the condition
    * <tt>size() > max_size()</tt> to be true.
    */
-  int_type overflow(int_type c)
+  int_type overflow(int_type c) override
   {
     if (!traits_type::eq_int_type(c, traits_type::eof()))
     {

asio/include/asio/cancellation_signal.hpp

@@ -50,12 +50,12 @@ class cancellation_handler
   {
   }
 
-  void call(cancellation_type_t type)
+  void call(cancellation_type_t type) override
   {
     handler_(type);
   }
 
-  std::pair<void*, std::size_t> destroy() noexcept
+  std::pair<void*, std::size_t> destroy() noexcept override
   {
     std::pair<void*, std::size_t> mem(this, size_);
     this->cancellation_handler::~cancellation_handler();

asio/include/asio/detail/deadline_timer_service.hpp

@@ -81,7 +81,7 @@ class deadline_timer_service
   }
 
   // Destroy all user-defined handler objects owned by the service.
-  void shutdown()
+  void shutdown() override
   {
   }
 

asio/include/asio/detail/epoll_reactor.hpp

@@ -90,11 +90,11 @@ class epoll_reactor
   ASIO_DECL ~epoll_reactor();
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Recreate internal descriptors following a fork.
   ASIO_DECL void notify_fork(
-      asio::execution_context::fork_event fork_ev);
+      asio::execution_context::fork_event fork_ev) override;
 
   // Initialise the task.
   ASIO_DECL void init_task();
@@ -206,10 +206,10 @@ class epoll_reactor
       typename timer_queue<Time_Traits>::per_timer_data& source);
 
   // Run epoll once until interrupted or events are ready to be dispatched.
-  ASIO_DECL void run(long usec, op_queue<operation>& ops);
+  ASIO_DECL void run(long usec, op_queue<operation>& ops) override;
 
   // Interrupt the select loop.
-  ASIO_DECL void interrupt();
+  ASIO_DECL void interrupt() override;
 
 private:
   // The hint to pass to epoll_create to size its data structures.

asio/include/asio/detail/null_reactor.hpp

@@ -56,17 +56,17 @@ class null_reactor
   }
 
   // Destroy all user-defined handler objects owned by the service.
-  void shutdown()
+  void shutdown() override
   {
   }
 
   // No-op because should never be called.
-  void run(long /*usec*/, op_queue<scheduler_operation>& /*ops*/)
+  void run(long /*usec*/, op_queue<scheduler_operation>& /*ops*/) override
   {
   }
 
   // No-op.
-  void interrupt()
+  void interrupt() override
   {
   }
 };

asio/include/asio/detail/posix_serial_port_service.hpp

@@ -58,7 +58,7 @@ class posix_serial_port_service :
   ASIO_DECL posix_serial_port_service(execution_context& context);
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Construct a new serial port implementation.
   void construct(implementation_type& impl)

asio/include/asio/detail/posix_thread.hpp

@@ -80,7 +80,7 @@ class posix_thread
     {
     }
 
-    virtual void run()
+    virtual void run() override
     {
       f_();
     }

asio/include/asio/detail/reactive_descriptor_service.hpp

@@ -82,7 +82,7 @@ class reactive_descriptor_service :
   ASIO_DECL reactive_descriptor_service(execution_context& context);
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Construct a new descriptor implementation.
   ASIO_DECL void construct(implementation_type& impl);

asio/include/asio/detail/reactive_socket_service.hpp

@@ -82,7 +82,7 @@ class reactive_socket_service :
   }
 
   // Destroy all user-defined handler objects owned by the service.
-  void shutdown()
+  void shutdown() override
   {
     this->base_shutdown();
   }

asio/include/asio/detail/resolver_service.hpp

@@ -59,13 +59,13 @@ class resolver_service :
   }
 
   // Destroy all user-defined handler objects owned by the service.
-  void shutdown()
+  void shutdown() override
   {
     this->base_shutdown();
   }
 
   // Perform any fork-related housekeeping.
-  void notify_fork(execution_context::fork_event fork_ev)
+  void notify_fork(execution_context::fork_event fork_ev) override
   {
     this->base_notify_fork(fork_ev);
   }

asio/include/asio/detail/scheduler.hpp

@@ -56,7 +56,7 @@ class scheduler
   ASIO_DECL ~scheduler();
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Initialise the task, if required.
   ASIO_DECL void init_task();

asio/include/asio/detail/select_reactor.hpp

@@ -74,11 +74,11 @@ class select_reactor
   ASIO_DECL ~select_reactor();
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Recreate internal descriptors following a fork.
   ASIO_DECL void notify_fork(
-      asio::execution_context::fork_event fork_ev);
+      asio::execution_context::fork_event fork_ev) override;
 
   // Initialise the task, but only if the reactor is not in its own thread.
   ASIO_DECL void init_task();

asio/include/asio/detail/signal_set_service.hpp

@@ -128,11 +128,11 @@ class signal_set_service :
   ASIO_DECL ~signal_set_service();
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Perform fork-related housekeeping.
   ASIO_DECL void notify_fork(
-      asio::execution_context::fork_event fork_ev);
+      asio::execution_context::fork_event fork_ev) override;
 
   // Construct a new signal_set implementation.
   ASIO_DECL void construct(implementation_type& impl);

asio/include/asio/detail/strand_executor_service.hpp

@@ -82,7 +82,7 @@ class strand_executor_service
   ASIO_DECL explicit strand_executor_service(execution_context& context);
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Create a new strand_executor implementation.
   ASIO_DECL implementation_type create_implementation();

asio/include/asio/detail/strand_service.hpp

@@ -78,7 +78,7 @@ class strand_service
   ASIO_DECL explicit strand_service(asio::io_context& io_context);
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Construct a new strand implementation.
   ASIO_DECL void construct(implementation_type& impl);

asio/include/asio/detail/timer_queue.hpp

@@ -112,13 +112,13 @@ class timer_queue
   }
 
   // Whether there are no timers in the queue.
-  virtual bool empty() const
+  virtual bool empty() const override
   {
     return timers_ == 0;
   }
 
   // Get the time for the timer that is earliest in the queue.
-  virtual long wait_duration_msec(long max_duration) const
+  virtual long wait_duration_msec(long max_duration) const override
   {
     if (heap_.empty())
       return max_duration;
@@ -130,7 +130,7 @@ class timer_queue
   }
 
   // Get the time for the timer that is earliest in the queue.
-  virtual long wait_duration_usec(long max_duration) const
+  virtual long wait_duration_usec(long max_duration) const override
   {
     if (heap_.empty())
       return max_duration;
@@ -142,7 +142,7 @@ class timer_queue
   }
 
   // Dequeue all timers not later than the current time.
-  virtual void get_ready_timers(op_queue<operation>& ops)
+  virtual void get_ready_timers(op_queue<operation>& ops) override
   {
     if (!heap_.empty())
     {
@@ -162,7 +162,7 @@ class timer_queue
   }
 
   // Dequeue all timers.
-  virtual void get_all_timers(op_queue<operation>& ops)
+  virtual void get_all_timers(op_queue<operation>& ops) override
   {
     while (timers_)
     {

asio/include/asio/detail/win_iocp_file_service.hpp

@@ -54,7 +54,7 @@ class win_iocp_file_service :
   ASIO_DECL win_iocp_file_service(execution_context& context);
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Construct a new file implementation.
   void construct(implementation_type& impl)

asio/include/asio/detail/win_iocp_handle_service.hpp

@@ -79,7 +79,7 @@ class win_iocp_handle_service :
   ASIO_DECL win_iocp_handle_service(execution_context& context);
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Construct a new handle implementation.
   ASIO_DECL void construct(implementation_type& impl);

asio/include/asio/detail/win_iocp_io_context.hpp

@@ -54,7 +54,7 @@ class win_iocp_io_context
   ASIO_DECL ~win_iocp_io_context();
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Initialise the task. Nothing to do here.
   void init_task()

asio/include/asio/detail/win_iocp_serial_port_service.hpp

@@ -45,7 +45,7 @@ class win_iocp_serial_port_service :
   ASIO_DECL win_iocp_serial_port_service(execution_context& context);
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Construct a new serial port implementation.
   void construct(implementation_type& impl)

asio/include/asio/detail/win_iocp_socket_service.hpp

@@ -136,7 +136,7 @@ class win_iocp_socket_service :
   }
 
   // Destroy all user-defined handler objects owned by the service.
-  void shutdown()
+  void shutdown() override
   {
     this->base_shutdown();
   }

asio/include/asio/detail/win_object_handle_service.hpp

@@ -87,7 +87,7 @@ class win_object_handle_service :
   ASIO_DECL win_object_handle_service(execution_context& context);
 
   // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
+  ASIO_DECL void shutdown() override;
 
   // Construct a new handle implementation.
   ASIO_DECL void construct(implementation_type& impl);

asio/include/asio/execution/bad_executor.hpp

@@ -31,7 +31,7 @@ class bad_executor
   ASIO_DECL bad_executor() noexcept;
 
   /// Obtain message associated with exception.
-  ASIO_DECL virtual const char* what() const noexcept;
+  ASIO_DECL virtual const char* what() const noexcept override;
 };
 
 } // namespace execution

asio/include/asio/executor.hpp

@@ -41,7 +41,7 @@ class bad_executor
 
   /// Obtain message associated with exception.
   ASIO_DECL virtual const char* what() const
-    noexcept;
+    noexcept override;
 };
 
 /// Polymorphic wrapper for executors.

asio/include/asio/impl/error.ipp

@@ -31,12 +31,12 @@ namespace detail {
 class netdb_category : public asio::error_category
 {
 public:
-  const char* name() const noexcept
+  const char* name() const noexcept override
   {
     return "asio.netdb";
   }
 
-  std::string message(int value) const
+  std::string message(int value) const override
   {
     if (value == error::host_not_found)
       return "Host not found (authoritative)";
@@ -63,12 +63,12 @@ namespace detail {
 class addrinfo_category : public asio::error_category
 {
 public:
-  const char* name() const noexcept
+  const char* name() const noexcept override
   {
     return "asio.addrinfo";
   }
 
-  std::string message(int value) const
+  std::string message(int value) const override
   {
     if (value == error::service_not_found)
       return "Service not found";
@@ -93,12 +93,12 @@ namespace detail {
 class misc_category : public asio::error_category
 {
 public:
-  const char* name() const noexcept
+  const char* name() const noexcept override
   {
     return "asio.misc";
   }
 
-  std::string message(int value) const
+  std::string message(int value) const override
   {
     if (value == error::already_open)
       return "Already open";

asio/include/asio/impl/error_code.ipp

@@ -37,12 +37,12 @@ namespace detail {
 class system_category : public error_category
 {
 public:
-  const char* name() const noexcept
+  const char* name() const noexcept override
   {
     return "asio.system";
   }
 
-  std::string message(int value) const
+  std::string message(int value) const override
   {
 #if defined(ASIO_WINDOWS_RUNTIME) || defined(ASIO_WINDOWS_APP)
     std::wstring wmsg(128, wchar_t());