Author: pfg Date: Sat Apr 25 18:17:08 2015 New Revision: 281986 URL: https://svnweb.freebsd.org/changeset/base/281986
Log: Cleanup a bit the clang attributes for type safety checking. Cleanup r281861 by moving the definitions to their own section but still leave the definitions out of lint. In addition to the 'argument_with_type_tag' attribute, bring 'type_tag_for_datatype' which is necessary for annotating the data types. Modified: head/sys/sys/cdefs.h Modified: head/sys/sys/cdefs.h ============================================================================== --- head/sys/sys/cdefs.h Sat Apr 25 16:15:01 2015 (r281985) +++ head/sys/sys/cdefs.h Sat Apr 25 18:17:08 2015 (r281986) @@ -212,7 +212,6 @@ #define __unused #define __packed #define __aligned(x) -#define __arg_type_tag(arg_kind, arg_idx, type_tag_idx) #define __section(x) #define __weak #else @@ -237,12 +236,6 @@ #define __aligned(x) __attribute__((__aligned__(x))) #define __section(x) __attribute__((__section__(x))) #endif -#if __has_attribute(argument_with_type_tag) -#define __arg_type_tag(arg_kind, arg_idx, type_tag_idx) \ - __attribute__((__argument_with_type_tag__(arg_kind, arg_idx, type_tag_idx))) -#else -#define __arg_type_tag(arg_kind, arg_idx, type_tag_idx) -#endif #if defined(__INTEL_COMPILER) #define __dead2 __attribute__((__noreturn__)) #define __pure2 __attribute__((__const__)) @@ -776,6 +769,24 @@ #endif /* + * Type Safety Checking + * + * Clang provides additional attributes to enable checking type safety + * properties that cannot be enforced by the C type system. + */ + +#if __has_attribute(argument_with_type_tag) && \ + __has_attribute(type_tag_for_datatype) && !defined(lint) +#define __arg_type_tag(arg_kind, arg_idx, type_tag_idx) \ + __attribute__((__argument_with_type_tag__(arg_kind, arg_idx, type_tag_idx))) +#define __datatype_type_tag(kind, type) \ + __attribute__((__type_tag_for_datatype__(kind, type))) +#else +#define __arg_type_tag(arg_kind, arg_idx, type_tag_idx) +#define __datatype_type_tag(kind, type) +#endif + +/* * Lock annotations. * * Clang provides support for doing basic thread-safety tests at _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
