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authorriastradh <riastradh@NetBSD.org>2018-08-27 14:48:07 +0000
committerriastradh <riastradh@NetBSD.org>2018-08-27 14:48:07 +0000
commit17a7943ea09fda07a3aff5bb1c69643ce7384dec (patch)
tree307401515df51615035dec1a262d5847bac036c1
parenta9a34f4503e249560c898024d4790019454f1724 (diff)
Define __must_check to actually use warn_unused_result.
-rw-r--r--sys/external/bsd/common/include/linux/kernel.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/external/bsd/common/include/linux/kernel.h b/sys/external/bsd/common/include/linux/kernel.h
index 7127e9e1ee7..cb53794e025 100644
--- a/sys/external/bsd/common/include/linux/kernel.h
+++ b/sys/external/bsd/common/include/linux/kernel.h
@@ -1,4 +1,4 @@
-/* $NetBSD: kernel.h,v 1.20 2018/08/27 13:37:55 riastradh Exp $ */
+/* $NetBSD: kernel.h,v 1.21 2018/08/27 14:48:07 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -53,7 +53,11 @@
#define __printf __printflike
#define __user
-#define __must_check /* __attribute__((warn_unused_result)), if GCC */
+#if __GNUC_PREREQ__(4,0) /* not sure when but this will work */
+#define __must_check __attribute__((warn_unused_result))
+#else
+#define __must_check /* nothing */
+#endif
#define __always_unused __unused
#define noinline __noinline