From d5273f0a77fd7535349839f16cc3501c0bc4e827 Mon Sep 17 00:00:00 2001
From: Alex Dowad <alexinbeijing@gmail.com>
Date: Thu, 23 Apr 2015 04:43:22 -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 9c00f1d337..db445ae387 100644
--- a/src/fd.cc
+++ b/src/fd.cc
@@ -241,8 +241,7 @@ 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;
 }
@@ -251,7 +250,10 @@ 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
-- 
2.47.2