From 528feb29dfe4ec34c36907171cdcb2e3eca62c3c Mon Sep 17 00:00:00 2001
From: Alex Dowad <alexinbeijing@gmail.com>
Date: Tue, 21 Apr 2015 06:40:29 -0700
Subject: [PATCH] Bug 4231 pt1: fd_open() not correctly handling empty
 descriptions

---
 src/fd.cc | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/fd.cc b/src/fd.cc
index 31018c61ff..f4adf142f9 100644
--- a/src/fd.cc
+++ b/src/fd.cc
@@ -242,8 +242,7 @@ fd_open(int fd, unsigned int type, const char *desc)
 
     fdUpdateBiggest(fd, 1);
 
-    if (desc)
-        xstrncpy(F->desc, desc, FD_DESC_SZ);
+    fd_note(fd, desc);
 
     ++Number_FD;
 }
@@ -252,7 +251,10 @@ void
 fd_note(int fd, const char *s)
 {
     fde *F = &fd_table[fd];
-    xstrncpy(F->desc, s, FD_DESC_SZ);
+    if (s)
+        xstrncpy(F->desc, s, FD_DESC_SZ);
+    else
+        *(F->desc) = 0; // ""-string
 }
 
 void
-- 
2.47.3