5 files changed, 13 insertions, 14 deletions
diff --git a/cpukit/include/rtems/score/assert.h b/cpukit/include/rtems/score/assert.h
index 6c68d9d28d..649d59b7e9 100644
--- a/cpukit/include/rtems/score/assert.h
+++ b/cpukit/include/rtems/score/assert.h
@@ -78,9 +78,6 @@ extern "C" {
   #if !defined( RTEMS_SCHEDSIM )
     /* normal build is newlib. */
 
-    void __assert_func(const char *, int, const char *, const char *)
-      RTEMS_NO_RETURN;
-
     #define _Assert( _e ) \
        ( ( _e ) ? \
          ( void ) 0 : \
diff --git a/cpukit/include/rtems/score/basedefs.h b/cpukit/include/rtems/score/basedefs.h
index c31b4ebef7..0244af1471 100644
--- a/cpukit/include/rtems/score/basedefs.h
+++ b/cpukit/include/rtems/score/basedefs.h
@@ -94,9 +94,11 @@
  *  can impact the code generated following calls to
  *  rtems_fatal_error_occurred and _Terminate.
  */
-#if defined(RTEMS_SCHEDSIM)
-  #define RTEMS_NO_RETURN
-#elif defined(__GNUC__) && !defined(RTEMS_DEBUG)
+#if __cplusplus >= 201103L
+  #define RTEMS_NO_RETURN [[noreturn]]
+#elif __STDC_VERSION__ >= 201112L
+  #define RTEMS_NO_RETURN _Noreturn
+#elif defined(__GNUC__)
   #define RTEMS_NO_RETURN __attribute__((__noreturn__))
 #else
   #define RTEMS_NO_RETURN
diff --git a/cpukit/include/rtems/score/interr.h b/cpukit/include/rtems/score/interr.h
index 1371e55653..85767d0bc5 100644
--- a/cpukit/include/rtems/score/interr.h
+++ b/cpukit/include/rtems/score/interr.h
@@ -261,10 +261,10 @@ extern Internal_errors_Information _Internal_errors_What_happened;
  *
  * @see rtems_fatal() and _Internal_error().
  */
-void _Terminate(
+RTEMS_NO_RETURN void _Terminate(
   Internal_errors_Source  the_source,
   Internal_errors_t       the_error
-) RTEMS_NO_RETURN;
+);
 
 /**
  * @brief Terminates the system with an INTERNAL_ERROR_CORE fatal source and
@@ -274,7 +274,7 @@ void _Terminate(
  *
  * @see _Terminate().
  */
-void _Internal_error( Internal_errors_Core_list core_error ) RTEMS_NO_RETURN;
+RTEMS_NO_RETURN void _Internal_error( Internal_errors_Core_list core_error );
 
 #ifdef __cplusplus
 }
diff --git a/cpukit/include/rtems/score/smpimpl.h b/cpukit/include/rtems/score/smpimpl.h
index dbca09d5cb..1ba16fb135 100644
--- a/cpukit/include/rtems/score/smpimpl.h
+++ b/cpukit/include/rtems/score/smpimpl.h
@@ -124,9 +124,9 @@ extern Processor_mask _SMP_Online_processors;
  *
  * @param cpu_self The current processor control.
  */
-void _SMP_Start_multitasking_on_secondary_processor(
+RTEMS_NO_RETURN void _SMP_Start_multitasking_on_secondary_processor(
   Per_CPU_Control *cpu_self
-) RTEMS_NO_RETURN;
+);
 
 /**
  * @brief Interrupts handler for inter-processor interrupts.
diff --git a/cpukit/include/rtems/score/threadimpl.h b/cpukit/include/rtems/score/threadimpl.h
index 61454eb7fe..a2e1e1427c 100644
--- a/cpukit/include/rtems/score/threadimpl.h
+++ b/cpukit/include/rtems/score/threadimpl.h
@@ -122,7 +122,7 @@ void _Thread_Create_idle(void);
  * part of initialization and its invocation is the last act of
  * the non-multitasking part of the system initialization.
  */
-void _Thread_Start_multitasking( void ) RTEMS_NO_RETURN;
+RTEMS_NO_RETURN void _Thread_Start_multitasking( void );
 
 /**
  * @brief The configuration of a new thread to initialize.
@@ -259,11 +259,11 @@ bool _Thread_Start(
  * @param entry The start entry information for @a executing.
  * @param lock_context The lock context.
  */
-void _Thread_Restart_self(
+RTEMS_NO_RETURN void _Thread_Restart_self(
   Thread_Control                 *executing,
   const Thread_Entry_information *entry,
   ISR_lock_Context               *lock_context
-) RTEMS_NO_RETURN;
+);
 
 /**
  * @brief Restarts the thread.