Make thread_init and thread_term nothrow

Author: dkorpel

src/core/thread/osthread.d

@@ -1926,7 +1926,7 @@ private extern (D) void resume(ThreadBase _t) nothrow @nogc
  * garbage collector on startup and before any other thread routines
  * are called.
  */
-extern (C) void thread_init() @nogc
+extern (C) void thread_init() @nogc nothrow
 {
     // NOTE: If thread_init itself performs any allocations then the thread
     //       routines reserved for garbage collector use may be called while
@@ -2013,7 +2013,7 @@ package __gshared align(__traits(classInstanceAlignment, Thread)) MainThreadStor
  * Terminates the thread module. No other thread routine may be called
  * afterwards.
  */
-extern (C) void thread_term() @nogc
+extern (C) void thread_term() @nogc nothrow
 {
     thread_term_tpl!(Thread)(_mainThreadStore);
 }

src/core/thread/threadbase.d

@@ -565,14 +565,14 @@ package(core.thread):
     __gshared align(mutexAlign) void[mutexClassInstanceSize] _slock;
     __gshared align(mutexAlign) void[mutexClassInstanceSize] _criticalRegionLock;
 
-    static void initLocks() @nogc
+    static void initLocks() @nogc nothrow
     {
         import core.lifetime : emplace;
         emplace!Mutex(_slock[]);
         emplace!Mutex(_criticalRegionLock[]);
     }
 
-    static void termLocks() @nogc
+    static void termLocks() @nogc nothrow
     {
         (cast(Mutex)_slock.ptr).__dtor();
         (cast(Mutex)_criticalRegionLock.ptr).__dtor();
@@ -752,13 +752,13 @@ package(core.thread):
 
 private alias attachThread = externDFunc!("core.thread.osthread.attachThread", ThreadBase function(ThreadBase) @nogc nothrow);
 
-extern (C) void _d_monitordelete_nogc(Object h) @nogc;
+extern (C) void _d_monitordelete_nogc(Object h) @nogc nothrow;
 
 /**
  * Terminates the thread module. No other thread routine may be called
  * afterwards.
  */
-package void thread_term_tpl(ThreadT, MainThreadStore)(ref MainThreadStore _mainThreadStore) @nogc
+package void thread_term_tpl(ThreadT, MainThreadStore)(ref MainThreadStore _mainThreadStore) @nogc nothrow
 {
     assert(_mainThreadStore.ptr is cast(void*) ThreadBase.sm_main);
 
@@ -1328,13 +1328,13 @@ package
         return cast(Mutex)ll_lock.ptr;
     }
 
-    void initLowlevelThreads() @nogc
+    void initLowlevelThreads() @nogc nothrow
     {
         import core.lifetime : emplace;
         emplace(lowlevelLock());
     }
 
-    void termLowlevelThreads() @nogc
+    void termLowlevelThreads() @nogc nothrow
     {
         lowlevelLock.__dtor();
     }

src/rt/dmain2.d

@@ -65,8 +65,8 @@ 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;
-extern (C) void thread_term() @nogc;
+extern (C) void thread_init() @nogc nothrow;
+extern (C) void thread_term() @nogc nothrow;
 extern (C) void lifetime_init();
 extern (C) void rt_moduleCtor();
 extern (C) void rt_moduleTlsCtor();

src/rt/monitor_.d

@@ -54,7 +54,7 @@ extern (C) void _d_monitordelete(Object h, bool det)
 }
 
 // does not call dispose events, for internal use only
-extern (C) void _d_monitordelete_nogc(Object h) @nogc
+extern (C) void _d_monitordelete_nogc(Object h) @nogc nothrow
 {
     auto m = getMonitor(h);
     if (m is null)