Add missing override annotations

Issue #3159

repos/base-fiasco/src/core/include/platform.h

@@ -108,7 +108,7 @@ namespace Genode {
 				 */
 				Sigma0();
 
-				int pager(Ipc_pager &) { /* never called */ return -1; }
+				int pager(Ipc_pager &) override { /* never called */ return -1; }
 			};
 
 			/**
@@ -126,7 +126,7 @@ namespace Genode {
 				 */
 				Core_pager(Platform_pd &core_pd);
 
-				int pager(Ipc_pager &) { /* never called */ return -1; }
+				int pager(Ipc_pager &) override { /* never called */ return -1; }
 			};
 
 			/**
@@ -165,9 +165,9 @@ namespace Genode {
 			size_t           vm_size()  const override { return _vm_size; }
 			Rom_fs          &rom_fs()         override { return _rom_fs; }
 
-			size_t max_caps() const { return Capability_space::max_caps(); }
+			size_t max_caps() const override { return Capability_space::max_caps(); }
 
-			void wait_for_exit();
+			void wait_for_exit() override;
 	};
 }
 

repos/base-foc/src/core/include/platform.h

@@ -51,7 +51,7 @@ namespace Genode {
 				 */
 				Sigma0(Cap_index*);
 
-				int pager(Ipc_pager &) { /* never called */ return -1; }
+				int pager(Ipc_pager &) override { /* never called */ return -1; }
 			};
 
 			/*
@@ -126,7 +126,7 @@ namespace Genode {
 				 */
 				Core_pager(Platform_pd &core_pd, Sigma0 &);
 
-				int pager(Ipc_pager &) { /* never called */ return -1; }
+				int pager(Ipc_pager &) override { /* never called */ return -1; }
 			};
 
 			/**
@@ -176,7 +176,7 @@ namespace Genode {
 
 			Cap_id_allocator &cap_id_alloc() { return _cap_id_alloc; }
 
-			void wait_for_exit();
+			void wait_for_exit() override;
 	};
 }
 

repos/base-foc/src/core/irq_session_component.cc

@@ -52,7 +52,7 @@ class Genode::Interrupt_handler : public Thread_deprecated<2048*sizeof(long)>
 
 	public:
 
-		void entry();
+		void entry() override;
 
 		static Fiasco::l4_cap_idx_t handler_cap()
 		{

repos/base-foc/src/include/base/internal/cap_alloc.h

@@ -70,7 +70,7 @@ namespace Genode {
 			 ** Cap_index_allocator interface **
 			 ***********************************/
 
-			Cap_index* alloc_range(size_t cnt)
+			Cap_index* alloc_range(size_t cnt) override
 			{
 				Lock_guard<Spin_lock> guard(_lock);
 
@@ -93,7 +93,7 @@ namespace Genode {
 				return 0;
 			}
 
-			Cap_index* alloc(addr_t addr)
+			Cap_index* alloc(addr_t addr) override
 			{
 				Lock_guard<Spin_lock> guard(_lock);
 
@@ -111,7 +111,7 @@ namespace Genode {
 				return new (obj) T();
 			}
 
-			void free(Cap_index* idx, size_t cnt)
+			void free(Cap_index* idx, size_t cnt) override
 			{
 				Lock_guard<Spin_lock> guard(_lock);
 
@@ -126,17 +126,17 @@ namespace Genode {
 				}
 			}
 
-			addr_t idx_to_kcap(Cap_index const *idx) const {
+			addr_t idx_to_kcap(Cap_index const *idx) const override {
 				return ((T const *)idx - &_indices[0]) << Fiasco::L4_CAP_SHIFT;
 			}
 
-			Cap_index* kcap_to_idx(addr_t kcap) {
+			Cap_index* kcap_to_idx(addr_t kcap) override {
 				return &_indices[kcap >> Fiasco::L4_CAP_SHIFT]; }
 
-			bool static_idx(Cap_index *idx) {
+			bool static_idx(Cap_index *idx) override {
 				return ((T*)idx) < &_indices[START_IDX]; }
 
-			void reinit()
+			void reinit() override
 			{
 				construct_at<Cap_index_allocator_tpl<T, SZ> >(this);
 			}

repos/base-foc/src/include/signal_source/client.h

@@ -60,7 +60,7 @@ class Genode::Signal_source_client : public Rpc_client<Foc_signal_source>
 		 * Build with frame pointer to make GDB backtraces work. See issue #1061.
 		 */
 		__attribute__((optimize("-fno-omit-frame-pointer")))
-		Signal wait_for_signal();
+		Signal wait_for_signal() override;
 };
 
 #endif /* _INCLUDE__SIGNAL_SOURCE__CLIENT_H_ */

repos/base-hw/src/core/kernel/cpu.h

@@ -96,7 +96,7 @@ class Kernel::Cpu : public Genode::Cpu, private Irq::Pool, private Timeout
 			 **  Irq interface  **
 			 *********************/
 
-			void occurred();
+			void occurred() override;
 		};
 
 		friend void Ipi::occurred(void);

repos/base-hw/src/core/kernel/irq.h

@@ -146,7 +146,7 @@ class Kernel::User_irq : public Kernel::Irq, public Kernel::Object
 		/**
 		 * Handle occurence of the interrupt
 		 */
-		void occurred()
+		void occurred() override
 		{
 			_context.submit(1);
 			disable();

repos/base-hw/src/core/kernel/thread.h

@@ -79,7 +79,7 @@ class Kernel::Thread
 			 ** Inter_processor_work interface **
 			 ************************************/
 
-			void execute();
+			void execute() override;
 		};
 
 		/**
@@ -97,7 +97,7 @@ class Kernel::Thread
 			 ** Inter_processor_work interface **
 			 ************************************/
 
-			void execute();
+			void execute() override;
 		};
 
 		friend void Pd_update::execute();
@@ -257,27 +257,27 @@ class Kernel::Thread
 		 ** Signal_context_killer **
 		 ***************************/
 
-		void _signal_context_kill_pending();
-		void _signal_context_kill_failed();
-		void _signal_context_kill_done();
+		void _signal_context_kill_pending() override;
+		void _signal_context_kill_failed()  override;
+		void _signal_context_kill_done()    override;
 
 
 		/********************
 		 ** Signal_handler **
 		 ********************/
 
-		void _await_signal(Signal_receiver * const receiver);
-		void _receive_signal(void * const base, size_t const size);
+		void _await_signal(Signal_receiver * const receiver) override;
+		void _receive_signal(void * const base, size_t const size) override;
 
 
 		/**************
 		 ** Ipc_node **
 		 **************/
 
-		void _send_request_succeeded();
-		void _send_request_failed();
-		void _await_request_succeeded();
-		void _await_request_failed();
+		void _send_request_succeeded()  override;
+		void _send_request_failed()     override;
+		void _await_request_succeeded() override;
+		void _await_request_failed()    override;
 
 	public:
 
@@ -366,16 +366,16 @@ class Kernel::Thread
 		 ** Cpu_job **
 		 *************/
 
-		void exception(Cpu & cpu);
-		void proceed(Cpu & cpu);
-		Cpu_job * helping_sink();
+		void exception(Cpu & cpu) override;
+		void proceed(Cpu & cpu)   override;
+		Cpu_job * helping_sink()  override;
 
 
 		/*************
 		 ** Timeout **
 		 *************/
 
-		void timeout_triggered();
+		void timeout_triggered() override;
 
 
 		/***************

repos/base-hw/src/core/kernel/vm.h

@@ -124,9 +124,9 @@ class Kernel::Vm : public Cpu_job,
 		 ** Cpu_job **
 		 *************/
 
-		void exception(Cpu & cpu);
-		void proceed(Cpu &  cpu);
-		Cpu_job * helping_sink() { return this; }
+		void exception(Cpu & cpu) override;
+		void proceed(Cpu &  cpu)  override;
+		Cpu_job * helping_sink()  override { return this; }
 };
 
 #endif /* _CORE__KERNEL__VM_H_ */

repos/base-hw/src/core/native_pd_component.h

@@ -40,7 +40,7 @@ class Genode::Native_pd_component : public Rpc_object<Hw_native_pd>
 
 		~Native_pd_component();
 
-		void upgrade_cap_slab();
+		void upgrade_cap_slab() override;
 };
 
 #endif /* _CORE__INCLUDE__NATIVE_PD_COMPONENT_H_ */

repos/base-hw/src/core/pager.h

@@ -220,7 +220,7 @@ class Genode::Pager_entrypoint : public  Object_pool<Pager_object>,
 		 ** Thread interface **
 		 **********************/
 
-		void entry();
+		void entry() override;
 };
 
 #endif /* _CORE__PAGER_H_ */

repos/base-hw/src/core/platform.h

@@ -131,7 +131,7 @@ class Genode::Platform : public Genode::Platform_generic
 		size_t           vm_size()  const override { return Hw::Mm::user().size; }
 		Rom_fs          &rom_fs()         override { return _rom_fs; }
 
-		inline void wait_for_exit() {
+		void wait_for_exit() override {
 			while (1) { Kernel::stop_thread(); } };
 
 		bool supports_direct_unmap() const override { return true; }

repos/base-hw/src/core/spec/arm_v7/trustzone/vm_session_component.h

@@ -79,13 +79,13 @@ class Genode::Vm_session_component
 		void _run(Vcpu_id);
 		void _pause(Vcpu_id);
 
-		void attach(Dataspace_capability, addr_t /* vm_addr */) {
+		void attach(Dataspace_capability, addr_t /* vm_addr */) override {
 			warning("Not implemented for TrustZone case"); }
 
-		void attach_pic(addr_t /* vm_addr */) {
+		void attach_pic(addr_t /* vm_addr */) override {
 			warning("Not implemented for TrustZone case"); }
 
-		void detach(addr_t /* vm_addr */, size_t /* size */) {
+		void detach(addr_t /* vm_addr */, size_t /* size */) override {
 			warning("Not implemented for TrustZone case"); }
 		void _create_vcpu(Thread_capability) {}
 };

repos/base-hw/src/core/spec/arm_v7/virtualization/kernel/vm.cc

@@ -64,7 +64,7 @@ struct Kernel::Vm_irq : Kernel::Irq
 	/**
 	 * A VM interrupt gets injected into the VM scheduled on the current CPU
 	 */
-	void occurred()
+	void occurred() override
 	{
 		Cpu_job & job = cpu_pool().executing_cpu().scheduled_job();
 		Vm *vm = dynamic_cast<Vm*>(&job);

repos/base-hw/src/core/spec/arm_v7/virtualization/vm_session_component.h

@@ -88,9 +88,9 @@ class Genode::Vm_session_component
 		void _exception_handler(Signal_context_capability, Vcpu_id);
 		void _run(Vcpu_id);
 		void _pause(Vcpu_id);
-		void attach(Dataspace_capability ds_cap, addr_t vm_addr);
-		void attach_pic(addr_t vm_addr);
-		void detach(addr_t vm_addr, size_t size);
+		void attach(Dataspace_capability, addr_t) override;
+		void attach_pic(addr_t) override;
+		void detach(addr_t, size_t) override;
 		void _create_vcpu(Thread_capability) {}
 };
 

repos/base-hw/src/core/spec/x86_64/muen/vm_session_component.h

@@ -81,10 +81,10 @@ class Genode::Vm_session_component
 				Kernel::pause_vm(kernel_object());
 		}
 
-		void attach(Dataspace_capability, addr_t) {}
-		void attach_pic(addr_t) {}
-		void detach(addr_t, size_t) {}
-		void _create_vcpu(Thread_capability) {}
+		void attach(Dataspace_capability, addr_t) override { }
+		void attach_pic(addr_t)                   override { }
+		void detach(addr_t, size_t)               override { }
+		void _create_vcpu(Thread_capability) { }
 };
 
 #endif /* _CORE__SPEC__X86_64__MUEN__VM_SESSION_COMPONENT_H_ */

repos/base-hw/src/lib/hw/page_table_allocator.h

@@ -110,7 +110,7 @@ class Hw::Page_table_allocator<TABLE_SIZE>::Array<COUNT>::Allocator
 
 		Bit_allocator _free_tables { };
 
-		unsigned _alloc()
+		unsigned _alloc() override
 		{
 			try {
 				return _free_tables.alloc();
@@ -118,7 +118,7 @@ class Hw::Page_table_allocator<TABLE_SIZE>::Array<COUNT>::Allocator
 			throw Out_of_tables();
 		}
 
-		void _free(unsigned idx) { _free_tables.free(idx); }
+		void _free(unsigned idx) override { _free_tables.free(idx); }
 
 	public:
 

repos/base-hw/src/test/cpu_quota/main.cc

@@ -69,7 +69,7 @@ class Counter : public Thread
 		Single_signal                _start_destruction { };
 		Synchronizer                 _synchronizer;
 
-		void entry()
+		void entry() override
 		{
 			unsigned long long volatile value = 0;
 			while (_stage == PAUSE) {

repos/base-linux/src/core/include/dataspace_component.h

@@ -127,9 +127,9 @@ namespace Genode {
 			 ** Linux-specific dataspace interface **
 			 ****************************************/
 
-			Filename fname() { return _fname; }
+			Filename fname() override { return _fname; }
 
-			Untyped_capability fd()
+			Untyped_capability fd() override
 			{
 				Untyped_capability fd_cap =
 					Capability_space::import(Rpc_destination(_fd), Rpc_obj_key());

repos/base-linux/src/core/include/io_mem_session_component.h

@@ -55,7 +55,7 @@ namespace Genode {
 			 ** Io-mem session interface **
 			 *****************************/
 
-			Io_mem_dataspace_capability dataspace() {
+			Io_mem_dataspace_capability dataspace() override {
 				return Io_mem_dataspace_capability(); }
 	};
 }

repos/base-linux/src/core/include/platform.h

@@ -65,20 +65,20 @@ namespace Genode {
 			 */
 			struct Pseudo_ram_allocator : Range_allocator
 			{
-				bool alloc(size_t, void **out_addr)
+				bool alloc(size_t, void **out_addr) override
 				{
 					*out_addr = 0;
 					return true;
 				}
 
 				Alloc_return alloc_aligned(size_t, void **out_addr, int,
-				                           addr_t, addr_t)
+				                           addr_t, addr_t) override
 				{
 					*out_addr = 0;
 					return Alloc_return::OK;
 				}
 
-				Alloc_return alloc_addr(size_t, addr_t)
+				Alloc_return alloc_addr(size_t, addr_t) override
 				{
 					return Alloc_return::OK;
 				}
@@ -129,7 +129,7 @@ namespace Genode {
 			 */
 			size_t max_caps() const override { return 10000; }
 
-			void wait_for_exit();
+			void wait_for_exit() override;
 	};
 }
 

repos/base-linux/src/core/include/region_map_component.h

@@ -54,16 +54,16 @@ class Genode::Region_map_component : public Rpc_object<Region_map>,
 		void remove_client(Rm_client &) { }
 
 		Local_addr attach(Dataspace_capability, size_t, off_t, bool,
-		                  Local_addr, bool, bool) {
+		                  Local_addr, bool, bool) override {
 			return (addr_t)0; }
 
-		void detach(Local_addr) { }
+		void detach(Local_addr) override { }
 
-		void fault_handler(Signal_context_capability) { }
+		void fault_handler(Signal_context_capability) override { }
 
-		State state() { return State(); }
+		State state() override { return State(); }
 
-		Dataspace_capability dataspace() { return Dataspace_capability(); }
+		Dataspace_capability dataspace() override { return Dataspace_capability(); }
 
 		Rm_dataspace_component *dataspace_component() { return nullptr; }
 

repos/base-linux/src/include/base/internal/local_pd_session.h

@@ -36,17 +36,17 @@ struct Genode::Local_pd_session : Expanding_pd_session_client
 	Local_pd_session(Parent &parent, Pd_session_capability pd)
 	: Expanding_pd_session_client(parent, pd) { }
 
-	Capability<Region_map> address_space()
+	Capability<Region_map> address_space() override
 	{
 		return Local_capability<Region_map>::local_cap(&_address_space);
 	}
 
-	Capability<Region_map> stack_area()
+	Capability<Region_map> stack_area() override
 	{
 		return Local_capability<Region_map>::local_cap(&_stack_area);
 	}
 
-	Capability<Region_map> linker_area()
+	Capability<Region_map> linker_area() override
 	{
 		return Local_capability<Region_map>::local_cap(&_linker_area);
 	}

repos/base-linux/src/include/base/internal/local_rm_session.h

@@ -36,13 +36,13 @@ struct Genode::Local_rm_session : Rm_session, Local_session
 		Local_session(id_space, id, *this), md_alloc(md_alloc)
 	{ }
 
-	Capability<Region_map> create(size_t size)
+	Capability<Region_map> create(size_t size) override
 	{
 		Region_map *rm = new (md_alloc) Region_map_mmap(true, size);
 		return Local_capability<Region_map>::local_cap(rm);
 	}
 
-	void destroy(Capability<Region_map> cap)
+	void destroy(Capability<Region_map> cap) override
 	{
 		Region_map *rm = Local_capability<Region_map>::deref(cap);
 		Genode::destroy(md_alloc, rm);

repos/base-linux/src/include/linux_dataspace/client.h

@@ -31,17 +31,17 @@ namespace Genode {
 		 ** Generic dataspace interface **
 		 *********************************/
 
-		size_t size()      { return call<Rpc_size>();      }
-		addr_t phys_addr() { return call<Rpc_phys_addr>(); }
-		bool   writable()  { return call<Rpc_writable>();  }
+		size_t size()      override { return call<Rpc_size>();      }
+		addr_t phys_addr() override { return call<Rpc_phys_addr>(); }
+		bool   writable()  override { return call<Rpc_writable>();  }
 
 
 		/****************************************
 		 ** Linux-specific dataspace interface **
 		 ****************************************/
 
-		Filename           fname() { return call<Rpc_fname>(); }
-		Untyped_capability fd()    { return call<Rpc_fd>(); }
+		Filename           fname() override { return call<Rpc_fname>(); }
+		Untyped_capability fd()    override { return call<Rpc_fd>(); }
 	};
 }
 

repos/base-linux/src/include/linux_native_cpu/client.h

@@ -24,13 +24,13 @@ struct Genode::Linux_native_cpu_client : Rpc_client<Linux_native_cpu>
 	explicit Linux_native_cpu_client(Capability<Native_cpu> cap)
 	: Rpc_client<Linux_native_cpu>(static_cap_cast<Linux_native_cpu>(cap)) { }
 
-	void thread_id(Thread_capability thread, int pid, int tid) {
+	void thread_id(Thread_capability thread, int pid, int tid) override {
 		call<Rpc_thread_id>(thread, pid, tid); }
 
-	Untyped_capability server_sd(Thread_capability thread) {
+	Untyped_capability server_sd(Thread_capability thread) override {
 		return call<Rpc_server_sd>(thread); }
 
-	Untyped_capability client_sd(Thread_capability thread) {
+	Untyped_capability client_sd(Thread_capability thread) override {
 		return call<Rpc_client_sd>(thread); }
 };
 

repos/base-linux/src/lib/lx_hybrid/lx_hybrid.cc

@@ -276,32 +276,32 @@ namespace Genode {
 			Thread_meta_data_created(Thread *thread)
 			: Native_thread::Meta_data(thread) { }
 
-			void wait_for_construction()
+			void wait_for_construction() override
 			{
 				_construct_lock.lock();
 			}
 
-			void constructed()
+			void constructed() override
 			{
 				_construct_lock.unlock();
 			}
 
-			void wait_for_start()
+			void wait_for_start() override
 			{
 				_start_lock.lock();
 			}
 
-			void started()
+			void started() override
 			{
 				_start_lock.unlock();
 			}
 
-			void wait_for_join()
+			void wait_for_join() override
 			{
 				_join_lock.lock();
 			}
 
-			void joined()
+			void joined() override
 			{
 				_join_lock.unlock();
 			}
@@ -317,32 +317,32 @@ namespace Genode {
 			Thread_meta_data_adopted(Thread *thread)
 			: Native_thread::Meta_data(thread) { }
 
-			void wait_for_construction()
+			void wait_for_construction() override
 			{
 				error("wait_for_construction() called for an adopted thread");
 			}
 
-			void constructed()
+			void constructed() override
 			{
 				error("constructed() called for an adopted thread");
 			}
 
-			void wait_for_start()
+			void wait_for_start() override
 			{
 				error("wait_for_start() called for an adopted thread");
 			}
 
-			void started()
+			void started() override
 			{
 				error("started() called for an adopted thread");
 			}
 
-			void wait_for_join()
+			void wait_for_join() override
 			{
 				error("wait_for_join() called for an adopted thread");
 			}
 
-			void joined()
+			void joined() override
 			{
 				error("joined() called for an adopted thread");
 			}

repos/base-linux/src/test/lx_hybrid_errno/main.cc

@@ -24,7 +24,7 @@ struct Thread : Genode::Thread_deprecated<STACK_SIZE>
 	Thread(Genode::Lock &barrier)
 	: Genode::Thread_deprecated<STACK_SIZE>("stat"), _barrier(barrier) { start(); }
 
-	void entry()
+	void entry() override
 	{
 		/*
 		 * Stat syscall should return with errno ENOENT

repos/base-nova/include/nova_native_cpu/client.h

@@ -26,7 +26,7 @@ struct Genode::Nova_native_cpu_client : Rpc_client<Nova_native_cpu>
 	: Rpc_client<Nova_native_cpu>(static_cap_cast<Nova_native_cpu>(cap)) { }
 
 	void thread_type(Thread_capability thread_cap, Thread_type thread_type,
-	                 Exception_base exception_base) {
+	                 Exception_base exception_base) override {
 		call<Rpc_thread_type>(thread_cap, thread_type, exception_base); }
 };
 

repos/base-nova/src/core/include/pager.h

@@ -400,7 +400,7 @@ namespace Genode {
 			/**
 			 * Thread interface
 			 */
-			void entry();
+			void entry() override;
 
 			/**
 			 * Return capability to this activation

repos/base-nova/src/core/include/signal_source_component.h

@@ -52,7 +52,7 @@ class Genode::Signal_source_component : public Rpc_object<Nova_signal_source,
 
 		Native_capability blocking_semaphore() const { return _blocking_semaphore; }
 
-		Signal wait_for_signal() { /* unused on NOVA */ return Signal(0, 0); }
+		Signal wait_for_signal() override { /* unused on NOVA */ return Signal(0, 0); }
 
 		void submit(Signal_context_component *, unsigned long) { /* unused on NOVA */ }
 };

repos/base-nova/src/test/platform/main.cc

@@ -426,7 +426,7 @@ class Pager : private Genode::Thread {
 		Ram_dataspace_capability _ds;
 		static addr_t _ds_mem;
 
-		void entry() { }
+		void entry() override { }
 
 		static void page_fault()
 		{
@@ -510,8 +510,8 @@ class Cause_mapping : public Genode::Thread {
 			_mem_st(mem_st)
 		{ }
 
-		void entry() {
-
+		void entry() override
+		{
 			log("mapper: hello");
 
 			Nova::Utcb * nova_utcb = reinterpret_cast<Nova::Utcb *>(utcb());
@@ -580,7 +580,7 @@ class Greedy : public Genode::Thread {
 			_env(env)
 		{ }
 
-		void entry()
+		void entry() override
 		{
 			log("starting");
 

repos/base-nova/src/timer/nova/time_source.h

@@ -64,7 +64,7 @@ class Timer::Time_source : public Threaded_time_source
 		 ** Threaded_time_source **
 		 **************************/
 
-		void _wait_for_irq();
+		void _wait_for_irq() override;
 
 	public:
 

repos/base-okl4/src/core/include/platform.h

@@ -139,9 +139,9 @@ namespace Genode {
 			Rom_fs          &rom_fs()         override { return _rom_fs; }
 			size_t           max_caps() const override { return Capability_space::max_caps(); }
 
-			void wait_for_exit();
+			void wait_for_exit() override;
 
-			bool supports_direct_unmap() const { return true; }
+			bool supports_direct_unmap() const override { return true; }
 
 
 			/**************************************

repos/base-pistachio/src/core/include/platform.h

@@ -101,7 +101,7 @@ namespace Genode {
 				 */
 				Sigma0();
 
-				int pager(Ipc_pager &) { /* never called */ return -1; }
+				int pager(Ipc_pager &) override { /* never called */ return -1; }
 			};
 
 			/**
@@ -119,7 +119,7 @@ namespace Genode {
 				 */
 				Core_pager(Platform_pd &core_pd);
 
-				int pager(Ipc_pager &) { /* never called */ return -1; }
+				int pager(Ipc_pager &) override { /* never called */ return -1; }
 			};
 
 			/**
@@ -153,9 +153,9 @@ namespace Genode {
 			Rom_fs          &rom_fs()         override { return _rom_fs; }
 			size_t           max_caps() const override { return Capability_space::max_caps(); }
 
-			void wait_for_exit();
+			void wait_for_exit() override;
 
-			Affinity::Space affinity_space() const
+			Affinity::Space affinity_space() const override
 			{
 				/*
 				 * Ignore topology of CPU nodes, just return a one-dimensional

repos/base-sel4/src/core/include/pager.h

@@ -195,7 +195,7 @@ class Genode::Pager_entrypoint : public Object_pool<Pager_object>,
 		 ** Thread interface **
 		 **********************/
 
-		void entry();
+		void entry() override;
 };
 
 #endif /* _CORE__INCLUDE__PAGER_H_ */

repos/base-sel4/src/core/include/platform.h

@@ -77,7 +77,7 @@ class Genode::Static_allocator : public Allocator
 			_used.free(index);
 		}
 
-		bool need_size_for_free() const { return false; }
+		bool need_size_for_free() const override { return false; }
 };
 
 class Genode::Platform : public Platform_generic
@@ -239,15 +239,15 @@ class Genode::Platform : public Platform_generic
 		 ** Generic platform interface **
 		 ********************************/
 
-		Range_allocator &ram_alloc()      { return _core_mem_alloc.phys_alloc(); }
-		Range_allocator &io_mem_alloc()   { return _io_mem_alloc; }
-		Range_allocator &io_port_alloc()  { return _io_port_alloc; }
-		Range_allocator &irq_alloc()      { return _irq_alloc; }
-		Range_allocator &region_alloc()   { return _core_mem_alloc.virt_alloc(); }
-		Range_allocator &core_mem_alloc() { return _core_mem_alloc; }
-		addr_t           vm_start() const { return _vm_base; }
-		size_t           vm_size()  const { return _vm_size;  }
-		Rom_fs          &rom_fs()         { return _rom_fs; }
+		Range_allocator &ram_alloc()      override { return _core_mem_alloc.phys_alloc(); }
+		Range_allocator &io_mem_alloc()   override { return _io_mem_alloc; }
+		Range_allocator &io_port_alloc()  override { return _io_port_alloc; }
+		Range_allocator &irq_alloc()      override { return _irq_alloc; }
+		Range_allocator &region_alloc()   override { return _core_mem_alloc.virt_alloc(); }
+		Range_allocator &core_mem_alloc() override { return _core_mem_alloc; }
+		addr_t           vm_start() const override { return _vm_base; }
+		size_t           vm_size()  const override { return _vm_size;  }
+		Rom_fs          &rom_fs()         override { return _rom_fs; }
 
 		Affinity::Space affinity_space() const override {
 			return sel4_boot_info().numNodes; }
@@ -274,7 +274,7 @@ class Genode::Platform : public Platform_generic
 
 		Cap_sel asid_pool() const { return _asid_pool_sel; }
 
-		void wait_for_exit();
+		void wait_for_exit() override;
 
 		/**
 		 * Determine size of a core local mapping required for a

repos/base/include/base/allocator.h

@@ -203,7 +203,7 @@ struct Genode::Range_allocator : Allocator
 	 * overload resolution would not find 'Allocator::free(void *)'.
 	 */
 	virtual void free(void *addr) = 0;
-	virtual void free(void *addr, size_t size) = 0;
+	virtual void free(void *addr, size_t size) override = 0;
 
 	/**
 	 * Return the sum of available memory

repos/base/include/base/allocator_avl.h

@@ -381,7 +381,7 @@ class Genode::Allocator_avl_tpl : public Allocator_avl_base
 			return b && b->used() ? b : 0;
 		}
 
-		int add_range(addr_t base, size_t size)
+		int add_range(addr_t base, size_t size) override
 		{
 			/*
 			 * We disable the slab block allocation while

repos/base/include/base/child.h

@@ -294,7 +294,7 @@ class Genode::Child : protected Rpc_object<Parent>,
 
 				void start(addr_t) override;
 
-				Capability<Cpu_thread> cap() const { return _cap; }
+				Capability<Cpu_thread> cap() const override { return _cap; }
 		};
 
 		/* child policy */

repos/base/include/base/heap.h

@@ -220,11 +220,11 @@ class Genode::Sliced_heap : public Allocator
 		 ** Allocator interface **
 		 *************************/
 
-		bool   alloc(size_t, void **);
-		void   free(void *, size_t);
-		size_t consumed() const { return _consumed; }
-		size_t overhead(size_t size) const;
-		bool   need_size_for_free() const override { return false; }
+		bool   alloc(size_t, void **)      override;
+		void   free(void *, size_t)        override;
+		size_t consumed()            const override { return _consumed; }
+		size_t overhead(size_t size) const override;
+		bool   need_size_for_free()  const override { return false; }
 };
 
 #endif /* _INCLUDE__BASE__HEAP_H_ */

repos/base/include/base/rpc_server.h

@@ -267,7 +267,7 @@ struct Genode::Rpc_object : Rpc_object_base, Rpc_dispatcher<RPC_INTERFACE, SERVE
 {
 	struct Capability_guard;
 
-	Rpc_exception_code dispatch(Rpc_opcode opcode, Ipc_unmarshaller &in, Msgbuf_base &out)
+	Rpc_exception_code dispatch(Rpc_opcode opcode, Ipc_unmarshaller &in, Msgbuf_base &out) override
 	{
 		return Rpc_dispatcher<RPC_INTERFACE, SERVER>::dispatch(opcode, in, out);
 	}
@@ -397,7 +397,7 @@ class Genode::Rpc_entrypoint : Thread, public Object_pool<Rpc_object_base>
 		 *
 		 * \noapi
 		 */
-		void entry();
+		void entry() override;
 
 	public:
 

repos/base/include/pd_session/client.h

@@ -70,8 +70,8 @@ struct Genode::Pd_session_client : Rpc_client<Pd_session>
 	void transfer_quota(Capability<Pd_session> pd, Cap_quota amount) override {
 		call<Rpc_transfer_cap_quota>(pd, amount); }
 
-	Cap_quota cap_quota() const { return call<Rpc_cap_quota>(); }
-	Cap_quota used_caps() const { return call<Rpc_used_caps>(); }
+	Cap_quota cap_quota() const override { return call<Rpc_cap_quota>(); }
+	Cap_quota used_caps() const override { return call<Rpc_used_caps>(); }
 
 	Ram_dataspace_capability alloc(size_t size,
 	                               Cache_attribute cached = CACHED) override

repos/base/include/timer_session/connection.h

@@ -293,7 +293,7 @@ class Timer::Connection : public  Genode::Connection<Session>,
 		 * \noapi
 		 * \deprecated  Use One_shot_timeout (or Periodic_timeout) instead
 		 */
-		void usleep(unsigned us)
+		void usleep(unsigned us) override
 		{
 			if (_mode == MODERN) {
 				throw Cannot_use_both_legacy_and_modern_interface();
@@ -331,7 +331,7 @@ class Timer::Connection : public  Genode::Connection<Session>,
 		 * \noapi
 		 * \deprecated  Use One_shot_timeout (or Periodic_timeout) instead
 		 */
-		void msleep(unsigned ms)
+		void msleep(unsigned ms) override
 		{
 			if (_mode == MODERN) {
 				throw Cannot_use_both_legacy_and_modern_interface();

repos/base/include/util/avl_tree.h

@@ -195,12 +195,12 @@ class Genode::Avl_tree : Avl_node<NT>
 		 */
 		class Policy : public Avl_node_base::Policy
 		{
-			bool higher(Avl_node_base *n1, Avl_node_base *n2) const
+			bool higher(Avl_node_base *n1, Avl_node_base *n2) const override
 			{
 				return static_cast<NT *>(n1)->higher(static_cast<NT *>(n2));
 			}
 
-			void recompute(Avl_node_base *node)
+			void recompute(Avl_node_base *node) override
 			{
 				static_cast<NT *>(node)->recompute();
 			}

repos/base/include/vm_session/client.h

@@ -42,13 +42,13 @@ struct Genode::Vm_session_client : Rpc_client<Vm_session>
 	void run(Vcpu_id);
 	void pause(Vcpu_id);
 
-	void attach(Dataspace_capability ds,addr_t vm_addr) {
+	void attach(Dataspace_capability ds,addr_t vm_addr) override {
 		call<Rpc_attach>(ds, vm_addr); }
 
-	void detach(addr_t vm_addr, size_t size) {
+	void detach(addr_t vm_addr, size_t size) override {
 		call<Rpc_detach>(vm_addr, size); }
 
-	void attach_pic(addr_t vm_addr) {
+	void attach_pic(addr_t vm_addr) override {
 		call<Rpc_attach_pic>(vm_addr); }
 
 	Vcpu_id create_vcpu(Allocator &, Env &, Vm_handler_base &);

repos/base/src/core/include/core_mem_alloc.h

@@ -152,10 +152,10 @@ class Genode::Mapped_mem_allocator : public Genode::Core_mem_translator
 		 ** Core_mem_translator interface **
 		 ***********************************/
 
-		void * phys_addr(void * addr) {
+		void * phys_addr(void * addr) override {
 			return _virt_alloc->map_addr(addr); }
 
-		void * virt_addr(void * addr) {
+		void * virt_addr(void * addr) override {
 			return _phys_alloc->map_addr(addr); }
 
 
@@ -260,12 +260,12 @@ class Genode::Core_mem_allocator : public Genode::Core_mem_translator
 		 ** Core_mem_translator interface **
 		 ***********************************/
 
-		void * phys_addr(void * addr)
+		void * phys_addr(void * addr) override
 		{
 			return _virt_alloc()->map_addr(addr);
 		}
 
-		void * virt_addr(void * addr)
+		void * virt_addr(void * addr) override
 		{
 			return _phys_alloc()->map_addr(addr);
 		}

repos/base/src/core/include/core_region_map.h

@@ -40,7 +40,7 @@ class Genode::Core_region_map : public Region_map
 		                  bool executable = false,
 		                  bool writeable = true) override;
 
-		void detach(Local_addr);
+		void detach(Local_addr) override;
 
 		void  fault_handler (Signal_context_capability) override { }
 		State state         ()                          override { return State(); }

repos/base/src/core/include/cpu_root.h

@@ -36,7 +36,7 @@ namespace Genode {
 		protected:
 
 			Cpu_session_component *_create_session(char const *args,
-			                                       Affinity const &affinity) {
+			                                       Affinity const &affinity) override {
 
 				size_t ram_quota =
 					Arg_string::find_arg(args, "ram_quota").ulong_value(0);

repos/base/src/core/include/cpu_thread_component.h

@@ -185,7 +185,7 @@ class Genode::Cpu_thread_component : public  Rpc_object<Cpu_thread>,
 		 ** Trace::Source::Info_accessor interface **
 		 ********************************************/
 
-		Trace::Source::Info trace_source_info() const
+		Trace::Source::Info trace_source_info() const override
 		{
 			return { _session_label, _name,
 			         _platform_thread.execution_time(),

repos/base/src/core/include/io_mem_root.h

@@ -31,7 +31,7 @@ namespace Genode {
 
 		protected:
 
-			Io_mem_session_component *_create_session(const char *args)
+			Io_mem_session_component *_create_session(const char *args) override
 			{
 				return new (md_alloc())
 					Io_mem_session_component(_io_mem_alloc, _ram_alloc,

repos/base/src/core/include/io_mem_session_component.h

@@ -142,7 +142,7 @@ namespace Genode {
 			 ** Io-mem session interface **
 			 ******************************/
 
-			Io_mem_dataspace_capability dataspace() { return _ds_cap; }
+			Io_mem_dataspace_capability dataspace() override { return _ds_cap; }
 	};
 }
 

repos/base/src/core/include/io_port_root.h

@@ -46,7 +46,7 @@ namespace Genode {
 
 		protected:
 
-			Io_port_session_component *_create_session(const char *args) {
+			Io_port_session_component *_create_session(const char *args) override {
 				return new (md_alloc()) Io_port_session_component(_io_port_alloc, args); }
 
 		public:

repos/base/src/core/include/io_port_session_component.h

@@ -63,13 +63,13 @@ namespace Genode {
 			 ** Io-port session interface **
 			 *******************************/
 
-			unsigned char  inb(unsigned short);
-			unsigned short inw(unsigned short);
-			unsigned       inl(unsigned short);
+			unsigned char  inb(unsigned short) override;
+			unsigned short inw(unsigned short) override;
+			unsigned       inl(unsigned short) override;
 
-			void outb(unsigned short, unsigned char);
-			void outw(unsigned short, unsigned short);
-			void outl(unsigned short, unsigned);
+			void outb(unsigned short, unsigned char)  override;
+			void outw(unsigned short, unsigned short) override;
+			void outl(unsigned short, unsigned)       override;
 	};
 }
 

repos/base/src/core/include/irq_root.h

@@ -39,7 +39,7 @@ class Genode::Irq_root : public Root_component<Irq_session_component>
 
 	protected:
 
-		Irq_session_component *_create_session(const char *args) {
+		Irq_session_component *_create_session(const char *args) override {
 			return new (md_alloc()) Irq_session_component(_irq_alloc, args); }
 
 	public:

repos/base/src/core/include/log_root.h

@@ -28,7 +28,7 @@ namespace Genode {
 			/**
 			 * Root component interface
 			 */
-			Log_session_component *_create_session(const char *args)
+			Log_session_component *_create_session(const char *args) override
 			{
 				char label_buf[Log_session_component::LABEL_LEN];
 

repos/base/src/core/include/log_session_component.h

@@ -44,7 +44,7 @@ namespace Genode {
 			 ** Log session **
 			 *****************/
 
-			size_t write(String const &string_buf)
+			size_t write(String const &string_buf) override
 			{
 				if (!(string_buf.valid_string())) {
 					error("corrupted string");

repos/base/src/core/include/pager.h

@@ -202,7 +202,7 @@ class Genode::Pager_entrypoint : public Object_pool<Pager_object>,
 		 ** Thread interface **
 		 **********************/
 
-		void entry();
+		void entry() override;
 };
 
 #endif /* _CORE__INCLUDE__PAGER_H_ */

repos/base/src/core/include/pd_root.h

@@ -59,7 +59,7 @@ class Genode::Pd_root : public Genode::Root_component<Genode::Pd_session_compone
 
 	protected:
 
-		Pd_session_component *_create_session(const char *args)
+		Pd_session_component *_create_session(const char *args) override
 		{
 			return new (md_alloc())
 				Pd_session_component(_ep,

repos/base/src/core/include/pd_session_component.h

@@ -283,12 +283,12 @@ class Genode::Pd_session_component : public Session_object<Pd_session>
 		void transfer_quota(Capability<Pd_session>, Cap_quota) override;
 		void transfer_quota(Capability<Pd_session>, Ram_quota) override;
 
-		Cap_quota cap_quota() const
+		Cap_quota cap_quota() const override
 		{
 			return _cap_account.constructed() ? _cap_account->limit() : Cap_quota { 0 };
 		}
 
-		Cap_quota used_caps() const
+		Cap_quota used_caps() const override
 		{
 			return _cap_account.constructed() ? _cap_account->used() : Cap_quota { 0 };
 		}
@@ -319,7 +319,7 @@ class Genode::Pd_session_component : public Session_object<Pd_session>
 		 ** Platform-specific interface extension **
 		 *******************************************/
 
-		Capability<Native_pd> native_pd() { return _native_pd.cap(); }
+		Capability<Native_pd> native_pd() override { return _native_pd.cap(); }
 };
 
 #endif /* _CORE__INCLUDE__PD_SESSION_COMPONENT_H_ */

repos/base/src/core/include/region_map_component.h

@@ -199,7 +199,7 @@ class Genode::Rm_client : public Pager_object, public Rm_faulter,
 			Rm_faulter(static_cast<Pager_object &>(*this)), _region_map(rm)
 		{ }
 
-		int pager(Ipc_pager &pager);
+		int pager(Ipc_pager &pager) override;
 
 		/**
 		 * Return region map that the RM client is member of

repos/base/src/core/include/rm_root.h

@@ -32,7 +32,7 @@ class Genode::Rm_root : public Root_component<Rm_session_component>
 
 	protected:
 
-		Rm_session_component *_create_session(const char *args)
+		Rm_session_component *_create_session(const char *args) override
 		{
 			size_t ram_quota = Arg_string::find_arg(args, "ram_quota").ulong_value(0);
 

repos/base/src/core/include/trace/root.h

@@ -34,7 +34,7 @@ class Genode::Trace::Root : public Genode::Root_component<Session_component>
 
 	protected:
 
-		Session_component *_create_session(const char *args)
+		Session_component *_create_session(const char *args) override
 		{
 			size_t ram_quota       = Arg_string::find_arg(args, "ram_quota").ulong_value(0);
 			size_t arg_buffer_size = Arg_string::find_arg(args, "arg_buffer_size").ulong_value(0);

repos/base/src/core/include/trace/session_component.h

@@ -75,16 +75,16 @@ class Genode::Trace::Session_component
 		Dataspace_capability dataspace();
 		size_t subjects();
 
-		Policy_id alloc_policy(size_t);
-		Dataspace_capability policy(Policy_id);
-		void unload_policy(Policy_id);
-		void trace(Subject_id, Policy_id, size_t);
-		void rule(Session_label const &, Thread_name const &, Policy_id, size_t);
-		void pause(Subject_id);
-		void resume(Subject_id);
-		Subject_info subject_info(Subject_id);
-		Dataspace_capability buffer(Subject_id);
-		void free(Subject_id);
+		Policy_id alloc_policy(size_t) override;
+		Dataspace_capability policy(Policy_id) override;
+		void unload_policy(Policy_id) override;
+		void trace(Subject_id, Policy_id, size_t) override;
+		void rule(Session_label const &, Thread_name const &, Policy_id, size_t) override;
+		void pause(Subject_id) override;
+		void resume(Subject_id) override;
+		Subject_info subject_info(Subject_id) override;
+		Dataspace_capability buffer(Subject_id) override;
+		void free(Subject_id) override;
 };
 
 #endif /* _CORE__INCLUDE__TRACE__SESSION_COMPONENT_H_ */

repos/base/src/core/include/vm_root.h

@@ -32,7 +32,7 @@ class Genode::Vm_root : public Root_component<Vm_session_component>
 
 	protected:
 
-		Vm_session_component *_create_session(const char *args)
+		Vm_session_component *_create_session(const char *args) override
 		{
 			return new (md_alloc())
 				Vm_session_component(*ep(),

repos/base/src/core/main.cc

@@ -143,7 +143,7 @@ class Core_child : public Child_policy
 		 ** Child-policy interface **
 		 ****************************/
 
-		Name name() const { return "init"; }
+		Name name() const override { return "init"; }
 
 		Route resolve_session_request(Service::Name const &name,
 		                              Session_label const &label) override

repos/base/src/lib/base/signal.cc

@@ -40,7 +40,7 @@ class Signal_handler_thread : Thread, Lock
 		 */
 		Constructible<Signal_source_client> _signal_source { };
 
-		void entry()
+		void entry() override
 		{
 			_signal_source.construct(env_deprecated()->pd_session()->alloc_signal_source());
 			unlock();

repos/base/src/lib/startup/init_main_thread.cc

@@ -68,7 +68,7 @@ class Main_thread : public Thread_deprecated<MAIN_THREAD_STACK_SIZE>
 		 ** Thread interface **
 		 **********************/
 
-		void entry() { }
+		void entry() override { }
 };
 
 

repos/base/src/test/rm_fault/main.cc

@@ -92,7 +92,7 @@ struct Exec_faulter : Thread
 	: Thread(env, "exec_fault", 1024 * sizeof(addr_t)), _fault_test(test)
 	{ }
 
-	void entry()
+	void entry() override
 	{
 		if (_fault_test == FAULT_ON_ADDR) {
 			addr_t volatile * value = (addr_t volatile *)MANAGED_ADDR;

repos/base/src/test/smp/main.cc

@@ -158,7 +158,7 @@ namespace Affinity_test {
 		Genode::uint64_t volatile        cnt;
 		Genode::Lock                     barrier;
 
-		void entry()
+		void entry() override
 		{
 			barrier.unlock();
 			Genode::log("Affinity: thread started on CPU ",
@@ -254,7 +254,7 @@ namespace Tlb_shootdown_test {
 		volatile unsigned * values;
 		Genode::Lock        barrier;
 
-		void entry()
+		void entry() override
 		{
 			Genode::log("TLB: thread started on CPU ", cpu_idx);
 			values[cpu_idx] = 1;

repos/base/src/test/thread/main.cc

@@ -56,7 +56,7 @@ class Helper : Thread
 
 		void *stack() const { return _stack; }
 
-		void entry()
+		void entry() override
 		{
 			Constructible<Helper> helper[CHILDREN];
 
@@ -126,7 +126,7 @@ struct Stack_helper : Thread
 
 	Stack_helper(Env &env) : Thread(env, "stack_helper", STACK_SIZE) { }
 
-	void entry()
+	void entry() override
 	{
 		log_stack_address("helper");
 		test_stack_alignment_varargs("%f\n%g\n", 3.142, 2.718);
@@ -202,7 +202,7 @@ struct Cpu_helper : Thread
 		_env(env)
 	{ }
 
-	void entry()
+	void entry() override
 	{
 		log(Thread::name().string(), " : _cpu_session=", _cpu_session,
 		    " env.cpu()=", &_env.cpu());
@@ -240,7 +240,7 @@ struct Pause_helper : Thread
 	Pause_helper(Env &env, const char * name, Cpu_session &cpu)
 	: Thread(env, name, STACK_SIZE, Thread::Location(), Thread::Weight(), cpu) { }
 
-	void entry()
+	void entry() override
 	{
 		while (1) {
 			/*
@@ -367,7 +367,7 @@ struct Lock_helper : Thread
 		lock(lock), lock_is_free(lock_is_free), unlock(unlock)
 	{ }
 
-	void entry()
+	void entry() override
 	{
 		log(" thread '", name(), "' started");
 
@@ -465,7 +465,7 @@ struct Cxa_helper : Thread
 		in_cxa(cxa), sync_startup(startup), test(test), sync(sync)
 	{ }
 
-	void entry()
+	void entry() override
 	{
 		log(" thread '", name(), "' started");
 
@@ -674,7 +674,7 @@ struct Create_destroy_helper : Thread
 	  result_value(result_value)
 	{ }
 
-	void entry()
+	void entry() override
 	{
 		result = result_value;
 	}

repos/base/src/timer/include/root_component.h

@@ -39,7 +39,7 @@ class Timer::Root_component : public Genode::Root_component<Session_component>
 		 ** Root_component **
 		 ********************/
 
-		Session_component *_create_session(const char *args)
+		Session_component *_create_session(const char *args) override
 		{
 			using namespace Genode;
 			size_t const ram_quota =

repos/base/src/timer/include/session_component.h

@@ -46,7 +46,7 @@ class Timer::Session_component : public  Genode::Rpc_object<Session>,
 		unsigned long const _init_time_us =
 			_timeout_scheduler.curr_time().trunc_to_plain_us().value;
 
-		void handle_timeout(Duration) {
+		void handle_timeout(Duration) override {
 			Genode::Signal_transmitter(_sigh).submit(); }
 
 	public:

repos/base/src/timer/include/threaded_time_source.h

@@ -82,7 +82,7 @@ class Timer::Threaded_time_source : public Genode::Time_source,
 		 ** Thread_deprecated **
 		 ***********************/
 
-		void entry()
+		void entry() override
 		{
 			while (true) {
 				_wait_for_irq();

repos/base/src/timer/periodic/time_source.h

@@ -38,7 +38,7 @@ class Timer::Time_source : public Threaded_time_source
 		 ** Threaded_time_source **
 		 **************************/
 
-		void _wait_for_irq();
+		void _wait_for_irq() override;
 
 	public:
 

repos/demo/include/scout/canvas.h

@@ -93,30 +93,30 @@ class Scout::Canvas : public Canvas_base
 		Canvas(PT *base, Area size, Genode::Allocator &alloc)
 		: _alloc(alloc), _surface(base, size) { }
 
-		Area size() const { return _surface.size(); }
+		Area size() const override { return _surface.size(); }
 
-		Rect clip() const { return _surface.clip(); }
+		Rect clip() const override { return _surface.clip(); }
 
-		void clip(Rect rect) { _surface.clip(rect); }
+		void clip(Rect rect) override { _surface.clip(rect); }
 
-		void draw_string(int x, int y, Font *font, Color color, char const *str, int len)
+		void draw_string(int x, int y, Font *font, Color color, char const *str, int len) override
 		{
 			char buf[len + 1];
 			Genode::strncpy(buf, str, len + 1);
 			Text_painter::paint(_surface, Text_painter::Position(x, y), *font, color, buf);
 		}
 
-		void draw_box(int x, int y, int w, int h, Color c)
+		void draw_box(int x, int y, int w, int h, Color c) override
 		{
 			Box_painter::paint(_surface, Rect(Point(x, y), Area(w, h)), c);
 		}
 
-		void draw_horizontal_shadow(Rect rect, int intensity)
+		void draw_horizontal_shadow(Rect rect, int intensity) override
 		{
 			Horizontal_shadow_painter::paint(_surface, rect, intensity);
 		}
 
-		void draw_icon(Rect rect, Texture_base const &icon, unsigned alpha)
+		void draw_icon(Rect rect, Texture_base const &icon, unsigned alpha) override
 		{
 			Icon_painter::paint(_surface, rect,
 			                    static_cast<Texture<PT> const &>(icon), alpha);
@@ -124,7 +124,7 @@ class Scout::Canvas : public Canvas_base
 
 		void draw_sky_texture(int py,
 		                      Sky_texture_painter::Sky_texture_base const &texture,
-		                      bool detail)
+		                      bool detail) override
 		{
 			Sky_texture_painter::paint(_surface, py, texture, detail);
 		}
@@ -132,7 +132,7 @@ class Scout::Canvas : public Canvas_base
 		void draw_refracted_icon(Point pos,
 		                         Scout::Refracted_icon_painter::Distmap<short> const &distmap,
 		                         Texture_base &tmp, Texture_base const &foreground,
-		                         bool detail, bool filter_backbuf)
+		                         bool detail, bool filter_backbuf) override
 		{
 			using namespace Scout;
 			Refracted_icon_painter::paint(_surface, pos, distmap,
@@ -141,7 +141,7 @@ class Scout::Canvas : public Canvas_base
 			                              detail, filter_backbuf);
 		}
 
-		void draw_texture(Point pos, Texture_base const &texture_base)
+		void draw_texture(Point pos, Texture_base const &texture_base) override
 		{
 			Texture<PT> const &texture = static_cast<Texture<PT> const &>(texture_base);
 
@@ -149,7 +149,7 @@ class Scout::Canvas : public Canvas_base
 			                       Texture_painter::SOLID, true);
 		}
 
-		Texture_base *alloc_texture(Area size, bool has_alpha)
+		Texture_base *alloc_texture(Area size, bool has_alpha) override
 		{
 			using namespace Genode;
 
@@ -163,7 +163,7 @@ class Scout::Canvas : public Canvas_base
 			return new (_alloc) Genode::Texture<PT>(pixel, alpha, size);
 		}
 
-		virtual void free_texture(Texture_base *texture_base)
+		void free_texture(Texture_base *texture_base) override
 		{
 			using namespace Genode;
 
@@ -179,9 +179,9 @@ class Scout::Canvas : public Canvas_base
 			destroy(_alloc, texture);
 		}
 
-		virtual void set_rgba_texture(Texture_base *texture_base,
-		                              unsigned char const *rgba,
-		                              unsigned len, int y)
+		void set_rgba_texture(Texture_base *texture_base,
+		                      unsigned char const *rgba,
+		                      unsigned len, int y) override
 		{
 			Texture<PT> *texture = static_cast<Texture<PT> *>(texture_base);
 

repos/demo/include/scout/fader.h

@@ -63,7 +63,7 @@ class Scout::Fader : public Tick
 		/**
 		 * Tick interface
 		 */
-		int on_tick()
+		int on_tick() override
 		{
 			if (_curr_value == _dst_value)
 				return 0;

repos/demo/include/scout/nitpicker_graphics_backend.h

@@ -127,7 +127,7 @@ class Scout::Nitpicker_graphics_backend : public Graphics_backend
 		Canvas_base &front() override { return *_canvas[_front_idx()]; }
 		Canvas_base &back()  override { return *_canvas[ _back_idx()]; }
 
-		void copy_back_to_front(Rect rect)
+		void copy_back_to_front(Rect rect) override
 		{
 
 			typedef Genode::Pixel_rgb565 PT;
@@ -146,19 +146,19 @@ class Scout::Nitpicker_graphics_backend : public Graphics_backend
 			_refresh_view(rect);
 		}
 
-		void swap_back_and_front()
+		void swap_back_and_front() override
 		{
 			_flip_state = !_flip_state;
 			_update_viewport();
 		}
 
-		void position(Point p)
+		void position(Point p) override
 		{
 			_position = p;
 			_update_viewport();
 		}
 
-		void bring_to_front()
+		void bring_to_front() override
 		{
 			typedef Nitpicker::Session::Command     Command;
 			typedef Nitpicker::Session::View_handle View_handle;
@@ -166,7 +166,7 @@ class Scout::Nitpicker_graphics_backend : public Graphics_backend
 			_nitpicker.execute();
 		}
 
-		void view_area(Area area)
+		void view_area(Area area) override
 		{
 			_view_size = area;
 		}

repos/demo/include/scout/parent_element.h

@@ -71,12 +71,12 @@ class Scout::Parent_element : public Element
 		/**
 		 * Element interface
 		 */
-		void     draw(Canvas_base &, Point);
-		Element *find(Point);
-		Element *find_by_y(int);
-		void     fill_cache(Canvas_base &);
-		void     flush_cache(Canvas_base &);
-		void     geometry(Rect);
+		void     draw(Canvas_base &, Point) override;
+		Element *find(Point)                override;
+		Element *find_by_y(int)             override;
+		void     fill_cache(Canvas_base &)  override;
+		void     flush_cache(Canvas_base &) override;
+		void     geometry(Rect)             override;
 
 		/**
 		 * Execute function on each child

repos/demo/include/scout/user_state.h

@@ -148,7 +148,7 @@ class Scout::User_state : public Parent_element
 		 ** Parent element **
 		 ********************/
 
-		void forget(Element const *e)
+		void forget(Element const *e) override
 		{
 			if (_mfocus == e) _mfocus = 0;
 			if (_active == e) _active = 0;

repos/demo/include/scout/window.h

@@ -107,7 +107,7 @@ class Scout::Window : public Parent_element
 		 * does not perform any immediate drawing operation. The actual drawing
 		 * must be initiated by calling the process_redraw function.
 		 */
-		void redraw_area(int x, int y, int w, int h)
+		void redraw_area(int x, int y, int w, int h) override
 		{
 			/*
 			 * Scout redraw quirk
@@ -253,13 +253,13 @@ class Scout::Sizer_event_handler : public Drag_event_handler
 		/**
 		 * Event handler interface
 		 */
-		void start_drag()
+		void start_drag() override
 		{
 			_obw = _window->view_w();
 			_obh = _window->view_h();
 		}
 
-		void do_drag()
+		void do_drag() override
 		{
 			/* calculate new window size */
 			int nbw = _obw + _current_mouse_position.x() - _old_mouse_position.x();
@@ -292,14 +292,14 @@ class Scout::Mover_event_handler : public Drag_event_handler
 		Window *_window;
 		int     _obx = 0, _oby = 0;    /* original launchpad position */
 
-		void start_drag()
+		void start_drag() override
 		{
 			_obx = _window->view_x();
 			_oby = _window->view_y();
 			_window->top();
 		}
 
-		void do_drag()
+		void do_drag() override
 		{
 			int nbx = _obx + _current_mouse_position.x() - _old_mouse_position.x();
 			int nby = _oby + _current_mouse_position.y() - _old_mouse_position.y();

repos/demo/include/scout_gfx/sky_texture_painter.h

@@ -193,9 +193,9 @@ struct Sky_texture_painter
 				         TW, TH, _coltab);
 			}
 
-			PT const *fallback() const { return _fallback[0]; }
+			PT const *fallback() const override { return _fallback[0]; }
 
-			short const *buf(unsigned i) const
+			short const *buf(unsigned i) const override
 			{
 				if (i >= 3)
 					return 0;
@@ -203,7 +203,7 @@ struct Sky_texture_painter
 				return _bufs[i][0];
 			}
 
-			PT const *coltab() const { return _coltab; }
+			PT const *coltab() const override { return _coltab; }
 	};
 
 

repos/demo/src/app/launchpad/child_entry.h

@@ -129,7 +129,7 @@ class Child_entry : public  Scout::Parent_element,
 		 ** Parent element interface **
 		 ******************************/
 
-		void format_fixed_width(int w)
+		void format_fixed_width(int w) override
 		{
 			using namespace Scout;
 

repos/demo/src/app/launchpad/launch_entry.h

@@ -63,7 +63,7 @@ class Launch_entry : public Scout::Parent_element, public Loadbar_listener
 		 ** Loadbar listener interface **
 		 ********************************/
 
-		void loadbar_changed(int mx)
+		void loadbar_changed(int mx) override
 		{
 			int value = _loadbar.value_by_xpos(mx - _loadbar.abs_position().x());
 			_loadbar.value(value);
@@ -76,7 +76,7 @@ class Launch_entry : public Scout::Parent_element, public Loadbar_listener
 		 ** Parent element interface **
 		 ******************************/
 
-		void format_fixed_width(int w)
+		void format_fixed_width(int w) override
 		{
 			using namespace Scout;
 

repos/demo/src/app/launchpad/launchpad_window.h

@@ -97,13 +97,13 @@ class Launchpad_window : public Scout::Scrollbar_listener,
 		/**
 		 * Window interface
 		 */
-		void format(Scout::Area);
-		void ypos(int ypos) { ypos_sb(ypos, 1); }
+		void format(Scout::Area) override;
+		void ypos(int ypos) override { ypos_sb(ypos, 1); }
 
 		/**
 		 * Element interface
 		 */
-		void draw(Scout::Canvas_base &canvas, Scout::Point abs_position)
+		void draw(Scout::Canvas_base &canvas, Scout::Point abs_position) override
 		{
 			using namespace Scout;
 
@@ -120,12 +120,12 @@ class Launchpad_window : public Scout::Scrollbar_listener,
 		/**
 		 * Scrollbar listener interface
 		 */
-		void handle_scroll(int view_pos);
+		void handle_scroll(int view_pos) override;
 
 		/**
 		 * Launchpad interface
 		 */
-		void quota(unsigned long quota)
+		void quota(unsigned long quota) override
 		{
 			_status_entry.max_value(initial_quota() / 1024);
 			_status_entry.value(quota / 1024);

repos/demo/src/app/launchpad/loadbar.h

@@ -172,7 +172,7 @@ class Loadbar : public Scout::Parent_element
 		/**
 		 * Element interface
 		 */
-		void format_fixed_width(int w)
+		void format_fixed_width(int w) override
 		{
 			using namespace Scout;
 			_cover.geometry(Rect(Point(0, 0), Area(w, _LH)));
@@ -180,7 +180,7 @@ class Loadbar : public Scout::Parent_element
 			_min_size = Scout::Area(w, _min_size.h());
 		}
 
-		void draw(Scout::Canvas_base &canvas, Scout::Point abs_position)
+		void draw(Scout::Canvas_base &canvas, Scout::Point abs_position) override
 		{
 			Parent_element::draw(canvas, abs_position);
 
@@ -207,7 +207,7 @@ class Loadbar : public Scout::Parent_element
 			canvas.clip(Rect(Point(cx1, cy1), Area(cx2 - cx1 + 1, cy2 - cy1 + 1)));
 		}
 
-		void mfocus(int flag)
+		void mfocus(int flag) override
 		{
 			if (!_active) return;
 

repos/demo/src/app/launchpad/main.cc

@@ -60,7 +60,7 @@ class Avail_quota_update : public Scout::Tick
 		/**
 		 * Tick interface
 		 */
-		int on_tick()
+		int on_tick() override
 		{
 			size_t new_avail = _pd.avail_ram().value;
 

repos/demo/src/app/launchpad/section.h

@@ -54,7 +54,7 @@ class Section : public Scout::Parent_element
 		/**
 		 * Element interface
 		 */
-		void format_fixed_width(int w)
+		void format_fixed_width(int w) override
 		{
 			using namespace Scout;
 
@@ -68,7 +68,7 @@ class Section : public Scout::Parent_element
 			                           _shadow.size().h())));
 		}
 
-		void draw(Scout::Canvas_base &canvas, Scout::Point abs_position)
+		void draw(Scout::Canvas_base &canvas, Scout::Point abs_position) override
 		{
 			using namespace Scout;
 

repos/demo/src/app/launchpad/status_entry.h

@@ -48,7 +48,7 @@ class Status_entry : public Scout::Parent_element
 			_min_size = Scout::Area(_PTW + 100, _min_size.h());
 		}
 
-		void format_fixed_width(int w)
+		void format_fixed_width(int w) override
 		{
 			using namespace Scout;
 

repos/demo/src/app/scout/browser_window.cc

@@ -209,13 +209,13 @@ class Browser_sizer_event_handler : public Scout::Sizer_event_handler
 		/**
 		 * Event handler interface
 		 */
-		void start_drag()
+		void start_drag() override
 		{
 			Sizer_event_handler::start_drag();
 			_ca = _browser_win->curr_anchor();
 		}
 
-		void do_drag()
+		void do_drag() override
 		{
 			Sizer_event_handler::do_drag();
 			_browser_win->go_to(_ca, 0);

repos/demo/src/app/scout/browser_window.h

@@ -95,8 +95,8 @@ class Scout::Browser_window : public Scrollbar_listener,
 		/**
 		 * Browser interface
 		 */
-		void _content(Element *content);
-		Element *_content();
+		void _content(Element *content) override;
+		Element *_content() override;
 
 	public:
 
@@ -132,15 +132,15 @@ class Scout::Browser_window : public Scrollbar_listener,
 		/**
 		 * Browser interface
 		 */
-		void     format(Area);
-		void     ypos(int ypos) { ypos_sb(ypos, 1); }
-		Anchor  *curr_anchor();
+		void     format(Area)   override;
+		void     ypos(int ypos) override { ypos_sb(ypos, 1); }
+		Anchor  *curr_anchor()  override;
 		Browser *browser() { return this; }
 
 		/**
 		 * Element interface
 		 */
-		void draw(Canvas_base &canvas, Point abs_position)
+		void draw(Canvas_base &canvas, Point abs_position) override
 		{
 			Parent_element::draw(canvas, abs_position);
 
@@ -156,7 +156,7 @@ class Scout::Browser_window : public Scrollbar_listener,
 		/**
 		 * Scrollbar listener interface
 		 */
-		void handle_scroll(int view_pos);
+		void handle_scroll(int view_pos) override;
 };
 
 #endif /* _BROWSER_WINDOW_H_ */

repos/demo/src/app/scout/elements.h

@@ -104,7 +104,7 @@ class Scout::Token : public Element
 		/**
 		 * Element interface
 		 */
-		void draw(Canvas_base &, Point);
+		void draw(Canvas_base &, Point) override;
 		void refresh() { redraw_area(-1, 0, _size.w() + 1, _size.h()); }
 };
 
@@ -165,7 +165,7 @@ class Scout::Link_token : public Token, private Link, public Event_handler,
 		/**
 		 * Element interface
 		 */
-		void draw(Canvas_base &canvas, Point abs_position)
+		void draw(Canvas_base &canvas, Point abs_position) override
 		{
 			_outline = Color(_style->color.r,
 			                 _style->color.g,
@@ -178,7 +178,7 @@ class Scout::Link_token : public Token, private Link, public Event_handler,
 			                _size.w(), 1, Color(0,0,255));
 		}
 
-		void mfocus(int flag)
+		void mfocus(int flag) override
 		{
 			/*
 			 * highlight link of all siblings that point to the same link.
@@ -214,7 +214,7 @@ class Scout::Link_token : public Token, private Link, public Event_handler,
 		/**
 		 * Tick interface
 		 */
-		int on_tick()
+		int on_tick() override
 		{
 			/* call on_tick function of the fader */
 			if (Fader::on_tick() == 0) return 0;
@@ -383,7 +383,7 @@ class Scout::Block : public Parent_element
 		/**
 		 * Element interface
 		 */
-		void format_fixed_width(int w);
+		void format_fixed_width(int w) override;
 };
 
 
@@ -405,7 +405,7 @@ class Scout::Center : public Parent_element
 		/**
 		 * Element interface
 		 */
-		void format_fixed_width(int w);
+		void format_fixed_width(int w) override;
 };
 
 
@@ -442,9 +442,9 @@ class Scout::Png_image : public Element
 		/**
 		 * Element interface
 		 */
-		void fill_cache(Canvas_base &);
-		void flush_cache(Canvas_base &);
-		void draw(Canvas_base &, Point);
+		void fill_cache(Canvas_base &) override;
+		void flush_cache(Canvas_base &) override;
+		void draw(Canvas_base &, Point) override;
 };
 
 
@@ -474,7 +474,7 @@ class Scout::Document : public Parent_element
 		/**
 		 * Element interface
 		 */
-		void format_fixed_width(int w)
+		void format_fixed_width(int w) override
 		{
 			_min_size = Area(w, _format_children(0, w));
 		}
@@ -528,8 +528,8 @@ class Scout::Verbatim : public Parent_element
 		/**
 		 * Element interface
 		 */
-		void draw(Canvas_base &, Point);
-		void format_fixed_width(int);
+		void draw(Canvas_base &, Point) override;
+		void format_fixed_width(int) override;
 };
 
 
@@ -561,12 +561,12 @@ class Scout::Item : public Parent_element
 		/**
 		 * Element interface
 		 */
-		void format_fixed_width(int w)
+		void format_fixed_width(int w) override
 		{
 			_min_size = Area(w, _format_children(_tag_ident, w - _tag_ident));
 		}
 
-		void draw(Canvas_base &canvas, Point abs_position)
+		void draw(Canvas_base &canvas, Point abs_position) override
 		{
 			canvas.draw_string(_position.x() + abs_position.x(),
 			                   _position.y() + abs_position.y(),
@@ -621,14 +621,14 @@ class Scout::Navbar : public Parent_element, public Fader
 		/**
 		 * Element interface
 		 */
-		void format_fixed_width(int);
-		void draw(Canvas_base &, Point);
-		Element *find(Point);
+		void format_fixed_width(int)    override;
+		void draw(Canvas_base &, Point) override;
+		Element *find(Point)            override;
 
 		/**
 		 * Tick interface
 		 */
-		int on_tick();
+		int on_tick() override;
 };
 
 #endif /* _ELEMENTS_H_ */

repos/demo/src/app/scout/fade_icon.h

@@ -62,7 +62,7 @@ class Scout::Fade_icon : public Fader, public Icon<PT, W, H>
 		/**
 		 * Tick interface
 		 */
-		int on_tick()
+		int on_tick() override
 		{
 			/* call on_tick function of the fader */
 			if (Fader::on_tick() == 0) return 0;
@@ -74,7 +74,7 @@ class Scout::Fade_icon : public Fader, public Icon<PT, W, H>
 		/**
 		 * Icon interface
 		 */
-		void alpha(int alpha)
+		void alpha(int alpha) override
 		{
 			_curr_value = alpha;
 			Icon<PT, W, H>::alpha(alpha);
@@ -83,7 +83,7 @@ class Scout::Fade_icon : public Fader, public Icon<PT, W, H>
 		/**
 		 * Element interface
 		 */
-		void mfocus(int flag)
+		void mfocus(int flag) override
 		{
 			Icon<PT, W, H>::mfocus(flag);
 			int step = _focus_alpha - _default_alpha;

repos/demo/src/app/scout/refracted_icon.h

@@ -106,7 +106,7 @@ class Scout::Refracted_icon : public Element
 			_fg_alpha = fg_alpha;
 		}
 
-		void draw(Canvas_base &canvas, Point abs_position)
+		void draw(Canvas_base &canvas, Point abs_position) override
 		{
 			Scout::Refracted_icon_painter::Distmap<short>
 				distmap(_distmap, Area(_distmap_w, _distmap_h));

repos/demo/src/app/scout/scrollbar.cc

@@ -106,7 +106,7 @@ class Arrow_event_handler : public Event_handler, public Tick
 		/**
 		 * Tick interface
 		 */
-		int on_tick()
+		int on_tick() override
 		{
 			/* accelerate */
 			if (_curr_speed < _dst_speed)

repos/demo/src/app/scout/scrollbar.h

@@ -105,12 +105,12 @@ class Scout::Scrollbar : public Parent_element
 		/**
 		 * Set geometry of scrollbar and layout scrollbar elements
 		 */
-		void geometry(Rect);
+		void geometry(Rect) override;
 
 		/**
 		 * Element interface
 		 */
-		Element *find(Point);
+		Element *find(Point) override;
 };
 
 

repos/demo/src/app/scout/sky_texture.h

@@ -40,7 +40,7 @@ class Scout::Sky_texture : public Element
 
 		Sky_texture(bool detailed = true) : _detailed(detailed) { }
 
-		void draw(Canvas_base &canvas, Point abs_position)
+		void draw(Canvas_base &canvas, Point abs_position) override
 		{
 			canvas.draw_sky_texture(abs_position.y(), _sky_texture,
 			                        _detailed);

repos/demo/src/app/scout/titlebar.h

@@ -69,13 +69,13 @@ class Scout::Titlebar : public Parent_element
 		 * Element interface
 		 */
 
-		void format_fixed_width(int w)
+		void format_fixed_width(int w) override
 		{
 			_min_size = Area(w, 32);
 			_fg.geometry(Rect(Point(0, 0), _min_size));
 		}
 
-		void draw(Canvas_base &canvas, Point abs_position)
+		void draw(Canvas_base &canvas, Point abs_position) override
 		{
 			const int b = 180, a = 200;
 			canvas.draw_box(abs_position.x() + _position.x(),

repos/demo/src/app/scout/widgets.h

@@ -78,10 +78,10 @@ class Scout::Docview : public Parent_element
 		/**
 		 * Element interface
 		 */
-		void     format_fixed_width(int);
-		void     draw(Canvas_base &, Point);
-		Element *find(Point);
-		void     geometry(Rect);
+		void     format_fixed_width(int)    override;
+		void     draw(Canvas_base &, Point) override;
+		Element *find(Point)                override;
+		void     geometry(Rect)             override;
 };
 
 
@@ -96,9 +96,9 @@ struct Scout::Horizontal_shadow : Element
 	/**
 	 * Element interface
 	 */
-	void draw(Canvas_base &, Point);
-	Element *find(Point) { return 0; }
-	void format_fixed_width(int w) { _min_size = Area(w, _min_size.h()); }
+	void draw(Canvas_base &, Point) override;
+	Element *find(Point) override { return 0; }
+	void format_fixed_width(int w) override { _min_size = Area(w, _min_size.h()); }
 };
 
 
@@ -158,8 +158,9 @@ class Scout::Icon : public Generic_icon
 		/**
 		 * Generic_icon interface
 		 */
-		int alpha() { return _icon_alpha; }
-		virtual void alpha(int alpha)
+		int alpha() override { return _icon_alpha; }
+
+		void alpha(int alpha) override
 		{
 			_icon_alpha = alpha;
 			refresh();
@@ -168,8 +169,8 @@ class Scout::Icon : public Generic_icon
 		/**
 		 * Element interface
 		 */
-		void draw(Canvas_base &, Point);
-		Element *find(Point);
+		void draw(Canvas_base &, Point) override;
+		Element *find(Point) override;
 };
 
 

repos/demo/src/server/liquid_framebuffer/framebuffer_window.h

@@ -141,7 +141,7 @@ class Framebuffer_window : public Scout::Window
 		/**
 		 * Move window to new position
 		 */
-		void vpos(int x, int y)
+		void vpos(int x, int y) override
 		{
 			Window::vpos(x, y);
 			format(_size);
@@ -163,7 +163,7 @@ class Framebuffer_window : public Scout::Window
 		/**
 		 * Window interface
 		 */
-		void format(Scout::Area size)
+		void format(Scout::Area size) override
 		{
 			using namespace Scout;
 
@@ -214,7 +214,7 @@ class Framebuffer_window : public Scout::Window
 		/**
 		 * Element interface
 		 */
-		void draw(Scout::Canvas_base &canvas, Scout::Point abs_position)
+		void draw(Scout::Canvas_base &canvas, Scout::Point abs_position) override
 		{
 			using namespace Scout;