diff options
Diffstat (limited to 'misc/sys/cdefs.h')
| -rw-r--r-- | misc/sys/cdefs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 1a9b0e78a1..8894d0d5fc 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -242,6 +242,14 @@ # define __attribute_format_strfmon__(a,b) /* Ignore */ #endif +/* The nonull function attribute allows to mark pointer parameters which + must not be NULL. */ +#if __GNUC_PREREQ (3,3) +# define __nonnull(params) __attribute__ ((__nonnull__ params)) +#else +# define __nonnull(params) +#endif + /* It is possible to compile containing GCC extensions even if GCC is run in pedantic mode if the uses are carefully marked using the `__extension__' keyword. But this is not generally available before |