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  1. Received: by cheltenham.cs.arizona.edu; Mon, 29 Jul 1996 11:17:11 MST
  2. Message-Id: <31FCDFDE.5814@tees.ac.uk>
  3. Date: Mon, 29 Jul 1996 16:59:26 +0100
  4. From: Hamish Lawson <H.Lawson@tees.ac.uk>
  5. Organization: University of Teesside
  6. X-Mailer: Mozilla 3.0b5aGold (Win95; I)
  7. Mime-Version: 1.0
  8. To: icon-group@cs.arizona.edu
  9. Subject: What is the value of a valueless return?
  10. References: <9606221325.AA26435@ursus.cs.arizona.edu> <31D3FA40.1435@tees.ac.uk>
  11. Content-Type: text/plain; charset=us-ascii
  12. Content-Transfer-Encoding: 7bit
  13. Errors-To: icon-group-errors@cs.arizona.edu
  14. Status: O
  15.  
  16. Given a procedure p() that terminates with a valueless return statement,
  17. what value is assigned to x when x := p() is evaluated? assuming that x
  18. was null prior to the assignment, is there any way to test subsequently
  19. whether the assignment succeeded?
  20.  
  21. | Hamish Lawson, School of Computing and Mathematics, 
  22. | University of Teesside, Middlesbrough, Cleveland, UK, TS1 3BA 
  23. | Tel: +44 1642 212695  Fax: +44 1642 342604
  24. | E-mail: H.Lawson@tees.ac.uk
  25.