From: Roland McGrath <roland@redhat.com>
Date: Wed, 2 Feb 2005 04:42:25 +0000 (+0000)
Subject: 2004-12-20  Dmitry V. Levin  <ldv@altlinux.org>
X-Git-Tag: v4.5.18~441
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b77d0934b3fa9df0a5b3046f7fd187687bdb712f;p=strace

2004-12-20  Dmitry V. Levin  <ldv@altlinux.org>

	* syscall.c (call_summary): Fix potential NULL dereference.
	Fixes RH#143369.
---

diff --git a/syscall.c b/syscall.c
index a02b03cf..a9f17263 100644
--- a/syscall.c
+++ b/syscall.c
@@ -2658,7 +2658,7 @@ FILE *outf;
 		error_cum += counts[i].errors;
 		tv_add(&tv_cum, &tv_cum, &counts[i].time);
 	}
-	if (sortfun)
+	if (counts && sortfun)
 		qsort((void *) sorted_count, nsyscalls, sizeof(int), sortfun);
 	fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %s\n",
 		"% time", "seconds", "usecs/call",