From 97edc3a2ccdfe1a56edbdf3b387e09d8f02263e8 Mon Sep 17 00:00:00 2001
From: Kalle Olavi Niemitalo <kon@iki.fi>
Date: Mon, 5 Mar 2007 21:36:36 +0200
Subject: [PATCH] fsp: Don't call qsort with a NULL pointer.

---
 src/protocol/fsp/fsp.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/protocol/fsp/fsp.c b/src/protocol/fsp/fsp.c
index 344d1c02..f444788a 100644
--- a/src/protocol/fsp/fsp.c
+++ b/src/protocol/fsp/fsp.c
@@ -188,7 +188,10 @@ sort_and_display_entries(FSP_DIR *dir, const unsigned char dircolor[])
 		copy_struct(&table[size], &fentry);
 		size++;
 	}
-	qsort(table, size, sizeof(*table), compare);
+	/* If size==0, then table==NULL.  According to ISO/IEC 9899:1999
+	 * 7.20.5p1, the NULL must not be given to qsort.  */
+	if (size > 0)
+		qsort(table, size, sizeof(*table), compare);
 
 	for (i = 0; i < size; i++) {
 		display_entry(&table[i], dircolor);