diff options
Diffstat (limited to 'share/man/man9/CTASSERT.9')
| -rw-r--r-- | share/man/man9/CTASSERT.9 | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/share/man/man9/CTASSERT.9 b/share/man/man9/CTASSERT.9 index 6211c2e..39f25d6 100644 --- a/share/man/man9/CTASSERT.9 +++ b/share/man/man9/CTASSERT.9 @@ -26,7 +26,7 @@ .\" .\" $FreeBSD$ .\" -.Dd September 5, 2008 +.Dd August 1, 2015 .Dt CTASSERT 9 .Os .Sh NAME @@ -39,6 +39,15 @@ .Sh DESCRIPTION The .Fn CTASSERT +macro is deprecated and the C11 standard +.Fn _Static_assert +should be used instead. +The header +.Fa sys/cdefs.h +should be included to provide compatibility for pre-C11 compilers. +.Pp +The +.Fn CTASSERT macro evaluates .Fa expression at compile time and causes a compiler error if it is false. @@ -48,14 +57,6 @@ 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. -.Sh IMPLEMENTATION NOTES -The -.Fn 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 -.Fn CTASSERT -in a source file including that header. .Sh EXAMPLES Assert that the size of the .Vt uuid |
