Index: libcfa/src/concurrency/kernel/startup.cfa
===================================================================
--- libcfa/src/concurrency/kernel/startup.cfa	(revision 2af1943b18ac4e55038b91f4d588ca5ca58bf5c7)
+++ libcfa/src/concurrency/kernel/startup.cfa	(revision a7d696f24154f74fedcb586aaa645387836cdff2)
@@ -218,5 +218,5 @@
 		( this.runner ){};
 		init( this, "Main Processor", *mainCluster, 0p );
-		kernel_thread = pthread_self();
+		kernel_thread = real_pthread_self();
 
 		runner{ &this };
@@ -769,5 +769,5 @@
 	pthread_attr_t attr;
 
-	check( pthread_attr_init( &attr ), "pthread_attr_init" ); // initialize attribute
+	check( real_pthread_attr_init( &attr ), "pthread_attr_init" ); // initialize attribute
 
 	size_t stacksize = max( PTHREAD_STACK_MIN, DEFAULT_STACK_SIZE );
@@ -796,11 +796,11 @@
 	#endif
 
-	check( pthread_attr_setstack( &attr, stack, stacksize ), "pthread_attr_setstack" );
-	check( pthread_create( pthread, &attr, start, arg ), "pthread_create" );
+	check( real_pthread_attr_setstack( &attr, stack, stacksize ), "pthread_attr_setstack" );
+	check( real_pthread_create( pthread, &attr, start, arg ), "pthread_create" );
 	return stack;
 }
 
 void __destroy_pthread( pthread_t pthread, void * stack, void ** retval ) {
-	int err = pthread_join( pthread, retval );
+	int err = real_pthread_join( pthread, retval );
 	if( err != 0 ) abort("KERNEL ERROR: joining pthread %p caused error %s\n", (void*)pthread, strerror(err));
 
@@ -808,9 +808,9 @@
 		pthread_attr_t attr;
 
-		check( pthread_attr_init( &attr ), "pthread_attr_init" ); // initialize attribute
+		check( real_pthread_attr_init( &attr ), "pthread_attr_init" ); // initialize attribute
 
 		size_t stacksize;
 		// default stack size, normally defined by shell limit
-		check( pthread_attr_getstacksize( &attr, &stacksize ), "pthread_attr_getstacksize" );
+		check( real_pthread_attr_getstacksize( &attr, &stacksize ), "pthread_attr_getstacksize" );
 		assert( stacksize >= PTHREAD_STACK_MIN );
 		stacksize += __page_size;