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From: "Robert P. J. Day" <rpjday@mindspring.com>
To: C programming list <linux-c-programming@vger.kernel.org>
Subject: using compile-time "assertions"
Date: Sun, 5 Jun 2005 16:36:34 -0400 (EDT)	[thread overview]
Message-ID: <Pine.LNX.4.61.0506051632530.5573@localhost.localdomain> (raw)


  another question (one of undoubtedly many) regarding the code i
inherited.  in this code, there is liberal use of the following macro:

#define INVARIANT(e) \
  do { \
    struct whatever { char static_assertion[(e) ? 1 : -1]; }; \
    } while (0)

which i recognize as a *compile-time* assertion/invariant.  is this a
common construct?  just curious.  or is there a more popular variant
of this sort of thing?  i recognize its value but, geez, there's
hundreds of these things in the code. :-P

rday

             reply	other threads:[~2005-06-05 20:36 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-05 20:36 Robert P. J. Day [this message]
2005-06-06  1:08 ` using compile-time "assertions" Glynn Clements
2005-06-06 21:01   ` Robert P. J. Day

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