CTASSERT(9FREEBSD) - Linux man page online | System kernel interfaces

Compile time assertion macro.

Chapter

August 1, 2015

CTASSERT(9) BSD 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 struc‐ tures 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);

AUTHORS

This manual page was written by Hiten M. Pandya <

@FreeBSD.org>.

BSD August 1, 2015 BSD

This manual	Reference	Other manuals
CTASSERT(9freebsd)	referred by
CTASSERT(9freebsd)	refer to	KASSERT(9freebsd)

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