Mark _d_critical_ and _d_monitor_ functions nogc nothrow

Author: dkorpel

src/rt/critical_.d

@@ -18,13 +18,13 @@ nothrow:
 
 import rt.monitor_, core.atomic;
 
-extern (C) void _d_critical_init()
+extern (C) void _d_critical_init() @nogc nothrow
 {
     initMutex(cast(Mutex*)&gcs.mtx);
     head = &gcs;
 }
 
-extern (C) void _d_critical_term()
+extern (C) void _d_critical_term() @nogc nothrow
 {
     // This function is only ever called by the runtime shutdown code
     // and therefore is single threaded so the following cast is fine.

src/rt/dmain2.d

@@ -59,10 +59,10 @@ struct UnitTestResult
     bool summarize;
 }
 
-extern (C) void _d_monitor_staticctor();
-extern (C) void _d_monitor_staticdtor();
-extern (C) void _d_critical_init();
-extern (C) void _d_critical_term();
+extern (C) void _d_monitor_staticctor() @nogc nothrow;
+extern (C) void _d_monitor_staticdtor() @nogc nothrow;
+extern (C) void _d_critical_init() @nogc nothrow;
+extern (C) void _d_critical_term() @nogc nothrow;
 extern (C) void gc_init();
 extern (C) void gc_term();
 extern (C) void thread_init() @nogc;

src/rt/monitor_.d

@@ -148,7 +148,7 @@ extern (C) void rt_detachDisposeEvent(Object h, DEvent e)
 
 nothrow:
 
-extern (C) void _d_monitor_staticctor()
+extern (C) void _d_monitor_staticctor() @nogc nothrow
 {
     version (Posix)
     {
@@ -158,7 +158,7 @@ extern (C) void _d_monitor_staticctor()
     initMutex(&gmtx);
 }
 
-extern (C) void _d_monitor_staticdtor()
+extern (C) void _d_monitor_staticdtor() @nogc nothrow
 {
     destroyMutex(&gmtx);
     version (Posix)