diff --git a/ChangeLog b/ChangeLog
index 438b686df9..64de792d03 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Wed Dec  9 00:52:37 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* file.c (rb_stat_wr, rb_stat_ww): call get_stat only once and
+	  reduce checking struct.  patch by Yuki Kurihara in
+	  [ruby-core:71949].  [Misc #11789]
+
 Wed Dec  9 00:24:33 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* compile.c (iseq_ibf_dump): dump extra data just string length.
diff --git a/file.c b/file.c
index 9259c1c300..824fc800ab 100644
--- a/file.c
+++ b/file.c
@@ -5184,8 +5184,9 @@ static VALUE
 rb_stat_wr(VALUE obj)
 {
 #ifdef S_IROTH
-    if ((get_stat(obj)->st_mode & (S_IROTH)) == S_IROTH) {
-	return UINT2NUM(get_stat(obj)->st_mode & (S_IRUGO|S_IWUGO|S_IXUGO));
+    struct stat *st = get_stat(obj);
+    if ((st->st_mode & (S_IROTH)) == S_IROTH) {
+	return UINT2NUM(st->st_mode & (S_IRUGO|S_IWUGO|S_IXUGO));
     }
     else {
 	return Qnil;
@@ -5276,8 +5277,9 @@ static VALUE
 rb_stat_ww(VALUE obj)
 {
 #ifdef S_IROTH
-    if ((get_stat(obj)->st_mode & (S_IWOTH)) == S_IWOTH) {
-	return UINT2NUM(get_stat(obj)->st_mode & (S_IRUGO|S_IWUGO|S_IXUGO));
+    struct stat *st = get_stat(obj);
+    if ((st->st_mode & (S_IWOTH)) == S_IWOTH) {
+	return UINT2NUM(st->st_mode & (S_IRUGO|S_IWUGO|S_IXUGO));
     }
     else {
 	return Qnil;