diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 99dab71eb4168ce3a0d859ea95a9d04642c30a0d..f6f35acb5f5be763b09865f6f8d8054bf2da58c8 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -81,25 +81,25 @@ struct tm *gmtime_r(const time_t *timep, struct tm *r)
     return r;
 }
 
-struct tm* gmtime(const time_t* t)
+struct tm *gmtime(const time_t *t)
 {
     static struct tm tmp;
     return gmtime_r(t, &tmp);
 }
 
 /*TODO timezone is not supprt now */
-struct tm* localtime_r(const time_t* t, struct tm* r)
+struct tm *localtime_r(const time_t *t, struct tm *r)
 {
     return gmtime_r(t, r);
 }
 
-struct tm* localtime(const time_t* t)
+struct tm *localtime(const time_t *t)
 {
     static struct tm tmp;
     return localtime_r(t, &tmp);
 }
 
-time_t mktime(struct tm * const t)
+time_t mktime(struct tm *const t)
 {
     register time_t day;
     register time_t i;
@@ -179,11 +179,12 @@ static void num2str(char *c, int i)
     c[1] = i % 10 + '0';
 }
 
-char* asctime_r(const struct tm *t, char *buf)
+char *asctime_r(const struct tm *t, char *buf)
 {
     /* "Wed Jun 30 21:49:08 1993\n" */
-    *(int*) buf = *(int*) (days + (t->tm_wday << 2));
-    *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2));
+    rt_memcpy(buf, (days + (t->tm_wday << 2)), 4);
+    rt_memcpy((buf + 4), (months + (t->tm_mon << 2)), 4);
+
     num2str(buf + 8, t->tm_mday);
     if (buf[8] == '0')
         buf[8] = ' ';
@@ -200,13 +201,13 @@ char* asctime_r(const struct tm *t, char *buf)
     return buf;
 }
 
-char* asctime(const struct tm *timeptr)
+char *asctime(const struct tm *timeptr)
 {
     static char buf[25];
     return asctime_r(timeptr, buf);
 }
 
-char* ctime(const time_t *timep)
+char *ctime(const time_t *timep)
 {
     return asctime(localtime(timep));
 }
@@ -245,14 +246,14 @@ int gettimeofday(struct timeval *tp, void *ignore)
  */
 /* for IAR 6.2 later Compiler */
 #if defined (__IAR_SYSTEMS_ICC__) &&  (__VER__) >= 6020000
-#pragma module_name = "?time"
-#if _DLIB_TIME_USES_64
-time_t __time64(time_t *t) 
-#else
-time_t __time32(time_t *t) 
-#endif
+    #pragma module_name = "?time"
+    #if _DLIB_TIME_USES_64
+        time_t __time64(time_t *t)
+    #else
+        time_t __time32(time_t *t)
+    #endif
 #else
-time_t time(time_t *t)
+    time_t time(time_t *t)
 #endif
 {
     time_t time_now = 0;