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

NAME
       CTASSERT	-- compile time	assertion macro

SYNOPSIS
       #include	<sys/param.h>
       #include	<sys/systm.h>

       CTASSERT(expression);

DESCRIPTION
       The   CTASSERT()	  macro	  is   deprecated   and	  the	C11   standard
       _Static_assert()	should be used instead.	 The header sys/cdefs.h	should
       be included to provide compatibility for	pre-C11	compilers.

       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 structures and variables during compilation, which would
       otherwise cause the code	to fail	at run time.

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>.

FreeBSD	14.3			August 1, 2015			   CTASSERT(9)

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<https://man.freebsd.org/cgi/man.cgi?query=CTASSERT&sektion=9&manpath=FreeBSD+14.3-RELEASE+and+Ports>

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