[PATCH] __get_unaligned() gcc-4 fix

707ced0d · Atsushi Nemoto <[email protected]> · 2006-03-07 21:55:28 -08:00

If the 'ptr' is a const, this code cause "assignment of read-only variable"
error on gcc 4.x.

Use __u64 instead of __typeof__(*(ptr)) for temporary variable to get
rid of errors on gcc 4.x.

Signed-off-by: Atsushi Nemoto <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 707ced0d718e89b52b13aa55a64653083e792cca
Parents: 81c29a85

Changes

1 files changed · +2 −2

File	Status	Add	Del	Content
include/asm-generic/unaligned.h	modified	+2	−2	View file

include/asm-generic/unaligned.h

View file

diff --git a/include/asm-generic/unaligned.h b/include/asm-generic/unaligned.h
index 4dc8ddb..09ec447 100644
--- a/include/asm-generic/unaligned.h
+++ b/include/asm-generic/unaligned.h
@@ -78,7 +78,7 @@ static inline void __ustw(__u16 val, __u16 *addr)
 
 #define __get_unaligned(ptr, size) ({		\
 	const void *__gu_p = ptr;		\
-	__typeof__(*(ptr)) val;			\
+	__u64 val;				\
 	switch (size) {				\
 	case 1:					\
 		val = *(const __u8 *)__gu_p;	\
@@ -95,7 +95,7 @@ static inline void __ustw(__u16 val, __u16 *addr)
 	default:				\
 		bad_unaligned_access_length();	\
 	};					\
-	val;					\
+	(__typeof__(*(ptr)))val;		\
 })
 
 #define __put_unaligned(val, ptr, size)		\