[PATCH] Cygwin: Fix size of a buffer in the ps utility

[Jon Turney]

Fix the size of a temporary buffer used in the ps utility, reported as a
new warning by gcc-9.2.0

../../../../src/winsup/utils/ps.cc: In function 'const char* ttynam(int)':
../../../../src/winsup/utils/ps.cc:101:23: warning: 'sprintf' may write a terminating nul past the end of the destination [-Wformat-overflow=]
../../../../src/winsup/utils/ps.cc:101:11: note: 'sprintf' output between 9 and 10 bytes into a destination of size 9
---
 winsup/utils/ps.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/winsup/utils/ps.cc b/winsup/utils/ps.cc
index 2307f7955..63b92319e 100644
--- a/winsup/utils/ps.cc
+++ b/winsup/utils/ps.cc
@@ -90,7 +90,7 @@ to_time_t (FILETIME *ptr)
 static const char *
 ttynam (int ntty)
 {
-  static char buf[9];
+  static char buf[10];
   char buf0[9];
   if (ntty < 0)
     strcpy (buf0, "?");
-- 
2.21.0