--- old/src/share/vm/utilities/ostream.cpp	2012-03-29 14:45:44.835854700 +0200
+++ new/src/share/vm/utilities/ostream.cpp	2012-03-29 14:45:44.373828300 +0200
@@ -1021,7 +1021,8 @@
 
 void networkStream::flush() {
   if (size() != 0) {
-    int result = os::raw_send(_socket, (char *)base(), size(), 0);
+    assert(!(size()>>31),"size() should be limited by buffer_max and never need 32 bits");
+    int result = os::raw_send(_socket, (char *)base(), (int)size(), 0);
     assert(result != -1, "connection error");
     assert(result == (int)size(), "didn't send enough data");
   }