--- a/AbstractOperatingSystem.st	Tue Oct 30 10:55:27 2018 +0100
+++ b/AbstractOperatingSystem.st	Tue Oct 30 11:57:25 2018 +0100
@@ -3738,7 +3738,10 @@
     "inform the other end of the bidirectional pipe represented by fileDescriptor, that
      we will send no more data to the pipe, i.e. EOF is reached"
 
-    ^ self subclassResponsibility
+    "/ dummy here
+    ^ self
+
+    "Modified (comment): / 30-10-2018 / 11:56:39 / Claus Gittinger"
 ! !
 
 !AbstractOperatingSystem class methodsFor:'interrupts & signals'!