diff --git a/src/lib/arch/unix/ArchMultithreadPosix.h b/src/lib/arch/unix/ArchMultithreadPosix.h
index bb4bbfb6c..893a6519b 100644
--- a/src/lib/arch/unix/ArchMultithreadPosix.h
+++ b/src/lib/arch/unix/ArchMultithreadPosix.h
@@ -95,7 +95,6 @@ private:
   static void threadCancel(int);
   static void *threadSignalHandler(void *vrep);
 
-private:
   using ThreadList = std::list<ArchThread>;
 
   static ArchMultithreadPosix *s_instance;
diff --git a/src/lib/mt/Thread.cpp b/src/lib/mt/Thread.cpp
index 411f5236c..926c5ac9a 100644
--- a/src/lib/mt/Thread.cpp
+++ b/src/lib/mt/Thread.cpp
@@ -55,7 +55,7 @@ Thread &Thread::operator=(const Thread &thread)
   return *this;
 }
 
-void Thread::exit(void *result)
+[[noreturn]] void Thread::exit(void *result)
 {
   throw XThreadExit(result);
 }
diff --git a/src/lib/mt/Thread.h b/src/lib/mt/Thread.h
index 3b667a8e4..9fec031ab 100644
--- a/src/lib/mt/Thread.h
+++ b/src/lib/mt/Thread.h
@@ -78,7 +78,7 @@ public:
   \endcode
   or add the \c RETHROW_XTHREAD macro to the \c catch(...) block.
   */
-  static void exit(void *);
+  [[noreturn]] static void exit(void *);
 
   //! Cancel thread
   /*!
diff --git a/src/lib/net/SocketMultiplexer.cpp b/src/lib/net/SocketMultiplexer.cpp
index 76179e2cd..00e4d1974 100644
--- a/src/lib/net/SocketMultiplexer.cpp
+++ b/src/lib/net/SocketMultiplexer.cpp
@@ -119,7 +119,7 @@ void SocketMultiplexer::removeSocket(ISocket *socket)
   unlockJobList();
 }
 
-void SocketMultiplexer::serviceThread(void *)
+[[noreturn]] void SocketMultiplexer::serviceThread(void *)
 {
   std::vector<IArchNetwork::PollEntry> pfds;
   IArchNetwork::PollEntry pfd;
diff --git a/src/lib/net/SocketMultiplexer.h b/src/lib/net/SocketMultiplexer.h
index 8f62cca25..8daec8d2d 100644
--- a/src/lib/net/SocketMultiplexer.h
+++ b/src/lib/net/SocketMultiplexer.h
@@ -60,7 +60,7 @@ private:
   // and m_update while m_pollable and m_polling are true.  all other
   // threads must only modify these when m_pollable and m_polling are
   // false.  only the service thread sets m_polling.
-  void serviceThread(void *);
+  [[noreturn]] void serviceThread(void *);
 
   // create, iterate, and destroy a cursor.  a cursor is used to
   // safely iterate through the job list while other threads modify