swab.h uses __always_inline without including the header where it is
defined, this is exposed by musl based distributions where this macro is
not defined by system C library headers unlike glibc where it is defined
in sys/cdefs.h and that header gets pulled in indirectly via
features.h -> sys/cdefs.h
and features.h gets pulled in a lot of headers. Therefore it may work in
cases where features.h is includes but not otherwise.
Adding linux/stddef.h here ensures that __always_inline is always
defined independent of which C library is used in userspace
Signed-off-by: Khem Raj <[email protected]>
Cc: Philippe Ombredanne <[email protected]>
Cc: Kate Stewart <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Thomas Gleixner <[email protected]>
---
include/uapi/linux/swab.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
index 23cd84868cc3..acddbe50a20d 100644
--- a/include/uapi/linux/swab.h
+++ b/include/uapi/linux/swab.h
@@ -3,6 +3,7 @@
#define _UAPI_LINUX_SWAB_H
#include <linux/types.h>
+#include <linux/stddef.h>
#include <linux/compiler.h>
#include <asm/swab.h>
--
2.19.0