linux-kernel - [PATCH v2] um: include sys/types.h for size

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Date:   Sun, 17 Jul 2022 10:53:46 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     linux-um@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Johannes Berg <johannes@...solutions.net>
Subject: [PATCH v2] um: include sys/types.h for size_t

Usually size_t comes from sys/types.h, not stddef.h. This code likely
worked only because something else in its usage chain was pulling in
sys/types.h. stddef.h is still required for NULL, however, so note this.

Cc: Johannes Berg <johannes@...solutions.net>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
---
 arch/um/include/shared/user.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/um/include/shared/user.h b/arch/um/include/shared/user.h
index dd4badffdeb3..bda66e5a9d4e 100644
--- a/arch/um/include/shared/user.h
+++ b/arch/um/include/shared/user.h
@@ -16,11 +16,12 @@
  */
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
-/* This is to get size_t */
+/* This is to get size_t and NULL */
 #ifndef __UM_HOST__
 #include <linux/types.h>
 #else
 #include <stddef.h>
+#include <sys/types.h>
 #endif
 
 extern void panic(const char *fmt, ...)
-- 
2.35.1