From 53227b6a74502cafa18301f64aa70d51f6c3a51d Mon Sep 17 00:00:00 2001
From: bernard <bernard.xiong@rt-thread.com>
Date: Tue, 17 Oct 2017 09:48:35 +0800
Subject: [PATCH] [lib] Fix the compiling warning in libc.

---
 components/libc/compilers/armlibc/libc.h  | 2 +-
 components/libc/compilers/armlibc/stdio.c | 2 +-
 components/libc/compilers/armlibc/stubs.c | 1 +
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/components/libc/compilers/armlibc/libc.h b/components/libc/compilers/armlibc/libc.h
index 5e9f68218..aef032401 100644
--- a/components/libc/compilers/armlibc/libc.h
+++ b/components/libc/compilers/armlibc/libc.h
@@ -32,6 +32,6 @@ int libc_system_init(void);
 
 int libc_stdio_set_console(const char* device_name, int mode);
 int libc_stdio_read (void *buffer, size_t size);
-int libc_stdio_write(void *buffer, size_t size);
+int libc_stdio_write(const void *buffer, size_t size);
 
 #endif
diff --git a/components/libc/compilers/armlibc/stdio.c b/components/libc/compilers/armlibc/stdio.c
index 8c9c99b3a..cba51beb1 100644
--- a/components/libc/compilers/armlibc/stdio.c
+++ b/components/libc/compilers/armlibc/stdio.c
@@ -63,7 +63,7 @@ int libc_stdio_read(void *buffer, size_t size)
     return read(std_fd, buffer, size);
 }
 
-int libc_stdio_write(void *buffer, size_t size)
+int libc_stdio_write(const void *buffer, size_t size)
 {
     return write(std_fd, buffer, size);
 }
diff --git a/components/libc/compilers/armlibc/stubs.c b/components/libc/compilers/armlibc/stubs.c
index 0de8aacb3..719665b78 100644
--- a/components/libc/compilers/armlibc/stubs.c
+++ b/components/libc/compilers/armlibc/stubs.c
@@ -31,6 +31,7 @@
 #include <rt_sys.h>
 
 #include "rtthread.h"
+#include "libc.h"
 
 #ifdef RT_USING_DFS
 #include "dfs_posix.h"
-- 
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