[Qemu-devel] [PATCH] bswap: fix compiler warning

[Alexey Kardashevskiy <aik@ozlabs.ru>]

The bswap functions use memcpy but the bswap.h header itself does not seem to
include it in some configuration such as cross compiling for powerpc64
on x86_64 machine (gcc 4.6.3 from ftp.kernel.org, headers/libs from FC18/ppc64),
the example warning is below.

The patch explicitly includes string.h.

  CC    ppc64-softmmu/hw/virtio/virtio.o
In file included from /home/alexey/qemu/include/libfdt_env.h:22:0,
                 from /home/alexey/qemu/../lib4qemu/usr/include/libfdt.h:54,
                 from /home/alexey/qemu/hw/nvram/spapr_nvram.c:25:
/home/alexey/qemu/include/qemu/bswap.h: In function 'lduw_p':
/home/alexey/qemu/include/qemu/bswap.h:244:5: warning: implicit declaration of function 'memcpy' [-Wimplicit-function-declaration]
/home/alexey/qemu/include/qemu/bswap.h:244:5: warning: incompatible implicit declaration of built-in function 'memcpy' [enabled by default]

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 include/qemu/bswap.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h
index d3af35d..d50de0d 100644
--- a/include/qemu/bswap.h
+++ b/include/qemu/bswap.h
@@ -1,6 +1,8 @@
 #ifndef BSWAP_H
 #define BSWAP_H
 
+#include <string.h>
+
 #include "config-host.h"
 #include <inttypes.h>
 #include <limits.h>
-- 
1.7.10.4