CTASSERT
—
compile time assertion macro
void
CTASSERT
(expression);
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.
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.
Assert that the size of the uuid structure is 16 bytes.
CTASSERT(sizeof(struct uuid) ==
16);
This manual page was written by Hiten M. Pandya
⟨hmp@FreeBSD.org⟩.