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Mark Andrews
2002-07-12 00:10:26 +00:00
parent 8e5017af68
commit 750a62493d
1 changed files with 2 additions and 2 deletions
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doc/dev/magic_numbers
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@@ -1,7 +1,7 @@
Copyright (C) 1999-2001 Internet Software Consortium.
See COPYRIGHT in the source root or http://isc.org/copyright.html for terms.
$Id: magic_numbers,v 1.5 2001/01/09 21:47:01 bwelling Exp $
$Id: magic_numbers,v 1.6 2002/07/12 00:10:26 marka Exp $
Magic Numbers
@@ -10,7 +10,7 @@ magic number as the first field. The purpose of the magic number is
principally to validate that a pointer a subroutine has gotten really points
to the type it claims to be. This helps detect problems caused by resources
being freed prematurely, that have been corrupted, or that have not been
properly initalized. It can also be handy in debugging.
properly initialized. It can also be handy in debugging.
Magic numbers should always be the first field. They never require locking
to access. As to the actual value to be used, something mnemonic is good: