diff options
| author | pfg <pfg@FreeBSD.org> | 2017-04-04 10:04:55 +0300 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2017-04-04 12:44:03 +0300 |
| commit | 81c121c48739df247ade660659cd6672a9a2c7dd (patch) | |
| tree | fab8cbfd5f5a7a24154f2461c1a02dfa479710ba /newlib/libc/include/sys | |
| parent | 84a6dba57ed351a275889a3e8c87f566e3b3e508 (diff) | |
Addition of clang nullability qualifiers.
Add two new qualifiers for use by the static checkers:
_Nonnull
The _Nonnull nullability qualifier indicates that null is not a meaningful
value for a value of the _Nonnull pointer type.
_Nullable
The _Nullable nullability qualifier indicates that a value of the
_Nullable pointer type can be null.
These were introduced in Clang 3.7. For more information, see:
http://clang.llvm.org/docs/AttributeReference.html#nonnull
We add these now without using them so that the GCC ports have time to
pick up the header change.
Hinted by: Android Bionic libc [1]
Also seen in: Apple's Libc-1158.20.4
[1]
https://github.com/android/platform_bionic/commit/baa2a973bd776a51bb05a8590ab05d86eea7b321
Diffstat (limited to 'newlib/libc/include/sys')
| -rw-r--r-- | newlib/libc/include/sys/cdefs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/newlib/libc/include/sys/cdefs.h b/newlib/libc/include/sys/cdefs.h index 68172ad65..ad2323264 100644 --- a/newlib/libc/include/sys/cdefs.h +++ b/newlib/libc/include/sys/cdefs.h @@ -645,6 +645,14 @@ #endif /* + * Nullability qualifiers: currently only supported by Clang. + */ +#if !(defined(__clang__) && __has_feature(nullability)) +#define _Nonnull +#define _Nullable +#endif + +/* * Type Safety Checking * * Clang provides additional attributes to enable checking type safety |