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CTASSERT(9)	       FreeBSD 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 im-
     portant 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	13.0			August 1, 2015			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | SEE ALSO | AUTHORS

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