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| author | Jeremy Huddleston <jeremyhu@apple.com> | 2011-04-27 17:25:53 -0700 |
|---|---|---|
| committer | Jeremy Huddleston <jeremyhu@apple.com> | 2011-04-28 18:23:56 -0700 |
| commit | 217d1dae0093ccaaac59a4fa42000e732492cb66 (patch) | |
| tree | b441298358f3ae97fb5a2c7041c8b3b47af674e0 | |
| parent | 6648db8f910fb74c100cf24436bf0df12cba7fd7 (diff) | |
Add _X_NONNULL macro to annotate when a function expects arguments to be non-null
This will allow with compiler optimization and better static analysis.
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
| -rw-r--r-- | Xfuncproto.h.in | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Xfuncproto.h.in b/Xfuncproto.h.in index 88d91c0..39ca3b2 100644 --- a/Xfuncproto.h.in +++ b/Xfuncproto.h.in @@ -122,6 +122,12 @@ in this Software without prior written authorization from The Open Group. # define _X_ATTRIBUTE_PRINTF(x,y) #endif +#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 303) +#define _X_NONNULL(args...) __attribute__((nonnull(args))) +#else +#define _X_NONNULL(...) /* */ +#endif + #if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205) #define _X_UNUSED __attribute__((__unused__)) #else |