diff --git a/dir.c b/dir.c
index 26ac80f2..d143a3dc 100644
--- a/dir.c
+++ b/dir.c
@@ -38,21 +38,17 @@ int
 dir_create_dir(const char *dir, mode_t mode)
 {
 	char copy[MAXPGPATH];
-	char *parent;
+	char parent[MAXPGPATH];
 
 	strncpy(copy, dir, MAXPGPATH);
-	parent = dirname(copy);
+	strncpy(parent, dirname(copy), MAXPGPATH);
 
 	/* Create parent first */
 	if (access(parent, F_OK) == -1)
 		dir_create_dir(parent, mode);
 
 	/* Create directory */
-#ifdef __darwin__
-	if (mkdir(copy, mode) == -1)
-#else
 	if (mkdir(dir, mode) == -1)
-#endif
 	{
 		if (errno == EEXIST)	/* already exist */
 			return 0;