dnssec: don't qsort() empty hashlist

6bbb0b8e · Ondřej Surý · 6bf364ae · 6bbb0b8e
Commit 6bbb0b8e authored Oct 13, 2019 by Ondřej Surý
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bin/dnssec/dnssec-signzone.c bin/dnssec/dnssec-signzone.c +4 -1

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--- a/bin/dnssec/dnssec-signzone.c
+++ b/bin/dnssec/dnssec-signzone.c
@@ -787,7 +787,10 @@ hashlist_comp(const void *a, const void *b) {

 static void
 hashlist_sort(hashlist_t *l) {
-	qsort(l->hashbuf, l->entries, l->length, hashlist_comp);
+	INSIST(l->hashbuf != NULL || l->length == 0);
+	if (l->length > 0) {
+		qsort(l->hashbuf, l->entries, l->length, hashlist_comp);
+	}
 }

 static bool