From acb1d1a668b2167b6761d751363cfadd258d87dc Mon Sep 17 00:00:00 2001
From: Matthew White <mehw.is.me@inventati.org>
Date: Thu, 25 Aug 2016 15:26:18 +0200
Subject: [PATCH] Bugfix: Prevent sorting when there are less than two elements
* src/utils.c (stable_sort): Add condition nmemb > 1, sort only when
there is more than one element
Prevent SIGSEGV.
---
src/utils.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/utils.c b/src/utils.c
index 9ab1b907..dcf90a6c 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -2428,7 +2428,7 @@ void
stable_sort (void *base, size_t nmemb, size_t size,
int (*cmpfun) (const void *, const void *))
{
- if (size > 1)
+ if (nmemb > 1 && size > 1)
{
void *temp = xmalloc (nmemb * size);
mergesort_internal (base, temp, size, 0, nmemb - 1, cmpfun);