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-rw-r--r--contrib/bind9/lib/dns/rbt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/contrib/bind9/lib/dns/rbt.c b/contrib/bind9/lib/dns/rbt.c
index 4e033d6..eb95d14 100644
--- a/contrib/bind9/lib/dns/rbt.c
+++ b/contrib/bind9/lib/dns/rbt.c
@@ -1537,6 +1537,8 @@ rehash(dns_rbt_t *rbt) {
return;
}
+ INSIST(rbt->hashsize > 0);
+
for (i = 0; i < rbt->hashsize; i++)
rbt->hashtable[i] = NULL;
@@ -1947,6 +1949,7 @@ dns_rbt_deletefromlevel(dns_rbtnode_t *delete, dns_rbtnode_t **rootp) {
COLOR(sibling) = COLOR(parent);
MAKE_BLACK(parent);
+ INSIST(RIGHT(sibling) != NULL);
MAKE_BLACK(RIGHT(sibling));
rotate_left(parent, rootp);
child = *rootp;
@@ -1984,6 +1987,7 @@ dns_rbt_deletefromlevel(dns_rbtnode_t *delete, dns_rbtnode_t **rootp) {
COLOR(sibling) = COLOR(parent);
MAKE_BLACK(parent);
+ INSIST(LEFT(sibling) != NULL);
MAKE_BLACK(LEFT(sibling));
rotate_right(parent, rootp);
child = *rootp;
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