[PATCH] ftsfind.c: avoid buffer overflow in -D code

[Bernhard Voelker]

Reported by GCC 8.1.1:

ftsfind.c: In function ‘get_fts_info_name’:
ftsfind.c:164:23: warning: ‘%d’ directive writing between 1 and 11 bytes into a 
region of size 9 [-Wformat-overflow=]
       sprintf (buf, "[%d]", info);
                       ^~
ftsfind.c:164:7: note: ‘sprintf’ output between 4 and 14 bytes into a 
destination of size 10
       sprintf (buf, "[%d]", info);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~

* find/ftsfind.c (get_fts_info_name): Increase buffer from 10 to 14
to be able to hold the 11-char string representation of the %d format,
the surrounding '[' and ']', plus the terminating NULL character.
---
 find/ftsfind.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/find/ftsfind.c b/find/ftsfind.c
index 607ea8d3..57804950 100644
--- a/find/ftsfind.c
+++ b/find/ftsfind.c
@@ -143,7 +143,7 @@ static void init_mounted_dev_list (void);
 static const char *
 get_fts_info_name (int info)
 {
-  static char buf[10];
+  static char buf[14];
   switch (info)
     {
       HANDLECASE(FTS_D);
-- 
2.18.0