Ubuntu Manpages

CTASSERT

compile time assertion macro

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

CTASSERT(expression);

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

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

The () 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.

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

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

KASSERT(9)

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