From fa925dce70d1c3715b432592fd650374f5bf7284 Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Tue, 10 May 2016 00:16:20 +0000
Subject: [PATCH] Fix NULL dereference in "-S name" when syscall table has
 holes

* count.c (syscall_cmp): Do not pass NULL to strcmp.
---
 count.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/count.c b/count.c
index 4b16ee66..1393b6e4 100644
--- a/count.c
+++ b/count.c
@@ -112,8 +112,9 @@ time_cmp(void *a, void *b)
 static int
 syscall_cmp(void *a, void *b)
 {
-	return strcmp(sysent[*((int *) a)].sys_name,
-		      sysent[*((int *) b)].sys_name);
+	const char *a_name = sysent[*((int *) a)].sys_name;
+	const char *b_name = sysent[*((int *) b)].sys_name;
+	return strcmp(a_name ? a_name : "", b_name ? b_name : "");
 }
 
 static int