Index: libcfa/src/iostream.cfa
===================================================================
--- libcfa/src/iostream.cfa	(revision f842032a0a09c7dcfe63ef8705bff30bf6b1b1b0)
+++ libcfa/src/iostream.cfa	(revision 1b0184b700fbecc7130f74db16064aa53b3328bb)
@@ -10,6 +10,6 @@
 // Created On       : Wed May 27 17:56:53 2015
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Thu Oct 19 19:29:54 2023
-// Update Count     : 1800
+// Last Modified On : Thu Oct 19 21:10:10 2023
+// Update Count     : 1801
 //
 
@@ -47,5 +47,5 @@
 		return os;
 	} // ?|?
-	OSYPE_VOID_IMPL( bool )
+	OSTYPE_VOID_IMPL( bool )
 
 	ostype & ?|?( ostype & os, char c ) {
Index: tests/concurrency/waituntil/channel_close.cfa
===================================================================
--- tests/concurrency/waituntil/channel_close.cfa	(revision f842032a0a09c7dcfe63ef8705bff30bf6b1b1b0)
+++ tests/concurrency/waituntil/channel_close.cfa	(revision 1b0184b700fbecc7130f74db16064aa53b3328bb)
@@ -26,10 +26,10 @@
         for( ;; ) {
             if ( useAnd ) {
-                waituntil( (in << A) ) { assert( A_removes == in ); A_removes++; removes++; }
-                and waituntil( (in2 << B) ) { assert( B_removes == in2 ); B_removes++; removes++; }
+                waituntil( (in << A) ) { __atomic_thread_fence( __ATOMIC_SEQ_CST ); assert( A_removes == in ); A_removes++; removes++; }
+                and waituntil( (in2 << B) ) { __atomic_thread_fence( __ATOMIC_SEQ_CST ); assert( B_removes == in2 ); B_removes++; removes++; }
                 continue;
             }
-            waituntil( (in << A) ) { assert( A_removes == in ); A_removes++; removes++; }
-            or waituntil( (in << B) ) { assert( B_removes == in ); B_removes++; removes++; }
+            waituntil( (in << A) ) { __atomic_thread_fence( __ATOMIC_SEQ_CST ); assert( A_removes == in ); A_removes++; removes++; }
+            or waituntil( (in << B) ) { __atomic_thread_fence( __ATOMIC_SEQ_CST ); ( B_removes == in ); B_removes++; removes++; }
         }
     } catchResume ( channel_closed * e ) {} // continue to remove until would block
@@ -37,10 +37,10 @@
     try {
         for( ;; )
-            waituntil( (in << A) ) { assert( A_removes == in ); A_removes++; removes++; }
+            waituntil( (in << A) ) { __atomic_thread_fence( __ATOMIC_SEQ_CST ); assert( A_removes == in ); A_removes++; removes++; }
     } catchResume ( channel_closed * e ) {} // continue to remove until would block
     catch ( channel_closed * e ) {} 
     try {
         for( ;; )
-            waituntil( (in << B) ) { assert( B_removes == in ); B_removes++; removes++; }
+            waituntil( (in << B) ) { __atomic_thread_fence( __ATOMIC_SEQ_CST ); assert( B_removes == in ); B_removes++; removes++; }
     } catchResume ( channel_closed * e ) {} // continue to remove until would block
     catch ( channel_closed * e ) {}