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Addition of clang nullability qualifiers. 

For consistency with the qualifiers added in r310977, define a new
qualifier _Null_unspecified which is also defined in clang 3.7+.

Add two new macros:
__NULLABILITY_PRAGMA_PUSH
__NULLABILITY_PRAGMA_POP

These are for use in headers when we want avoid noisy warnings if
some pointers are left without nullability annotations.

These are added with way ahead of their first use to teach the GCC
ports headers of their existance before their first use.
This commit is contained in:
pfg 2017-04-04 09:04:57 +02:00 committed by Corinna Vinschen
parent e1563a05b7
commit 7b07f11b1f
1 changed files with 7 additions and 0 deletions
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7
newlib/libc/include/sys/cdefs.h
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@ -634,6 +634,13 @@
#if !(defined(__clang__) && __has_feature(nullability))
#define _Nonnull
#define _Nullable
#define _Null_unspecified
#define __NULLABILITY_PRAGMA_PUSH
#define __NULLABILITY_PRAGMA_POP
#else
#define __NULLABILITY_PRAGMA_PUSH _Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Wnullability-completeness\"")
#define __NULLABILITY_PRAGMA_POP _Pragma("clang diagnostic pop")
#endif
/*