Author: pfg
Date: Wed Apr 1 16:17:58 2015
New Revision: 280958
URL: https://svnweb.freebsd.org/changeset/base/280958
Log:
Revert r280449;
Permit multiple arguments for the nonnull attribute.
For the benefit of anyone that may be struggling to port
FreeBSD to gcc 2.8 (or older) avoid using variadic macros.
MFC r280700 (partial);
Bring new attribute:
__result_use_check
Causes a warning to be emitted if a caller of the function
with this attribute does not use its return value. This is
known in gcc as "warn_unused_result" but we considered the
original naming unsuitable for an attribute.
Modified:
stable/10/sys/sys/cdefs.h
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/sys/cdefs.h
==============================================================================
--- stable/10/sys/sys/cdefs.h Wed Apr 1 12:42:26 2015 (r280957)
+++ stable/10/sys/sys/cdefs.h Wed Apr 1 16:17:58 2015 (r280958)
@@ -40,6 +40,9 @@
* Testing against Clang-specific extensions.
*/
+#ifndef __has_attribute
+#define __has_attribute(x) 0
+#endif
#ifndef __has_extension
#define __has_extension __has_feature
#endif
@@ -240,7 +243,7 @@
#define __aligned(x) __attribute__((__aligned__(x)))
#define __section(x) __attribute__((__section__(x)))
#endif
-#endif
+#endif /* lint */
#if !__GNUC_PREREQ__(2, 95)
#define __alignof(x) __offsetof(struct { char __a; x __b; }, __b)
@@ -347,15 +350,17 @@
#endif
#if __GNUC_PREREQ__(3, 3)
-#define __nonnull(...) __attribute__((__nonnull__(__VA_ARGS__)))
+#define __nonnull(x) __attribute__((__nonnull__(x)))
#else
-#define __nonnull(...)
+#define __nonnull(x)
#endif
#if __GNUC_PREREQ__(3, 4)
#define __fastcall __attribute__((__fastcall__))
+#define __result_use_check __attribute__((__warn_unused_result__))
#else
#define __fastcall
+#define __result_use_check
#endif
#if __GNUC_PREREQ__(4, 1)
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