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NetBSD 6.1.5 - man page for ctassert (netbsd section 9)

CTASSERT(9)			  BSD Kernel Developer's Manual 		      CTASSERT(9)

NAME
     CTASSERT -- compile time assertion macro

SYNOPSIS
     void
     CTASSERT(expression);

DESCRIPTION
     The CTASSERT() macro evaluates expression at compile time and causes a compiler error if it
     is false.

     The CTASSERT() macro is useful for asserting the size or alignment of important data struc-
     tures and variables during compilation, which would otherwise cause the code to fail at run
     time.

IMPLEMENTATION NOTES
     The CTASSERT() macro should not be used in a header file.	It is implemented using a dummy
     typedef, with a name (based on line number) that may conflict with a CTASSERT() in a source
     file including that header.

EXAMPLES
     Assert that the size of the uuid structure is 16 bytes.

	   CTASSERT(sizeof(struct uuid) == 16);

SEE ALSO
     KASSERT(9)

AUTHORS
     This manual page was written by Hiten M. Pandya <hmp@FreeBSD.org>.

BSD					 January 24, 2010				      BSD


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