Add index-out-of-bounds check in trie.contains

ebd5c6cd · Yulin Chen · 6a720386 · ebd5c6cd
Commit ebd5c6cd authored Sep 25, 2017 by Yulin Chen
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trie.go trie.go +3 -0

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--- a/trie.go
+++ b/trie.go
@@ -130,6 +130,9 @@ func (p *prefixTrie) contains(number rnet.NetworkNumber) (bool, error) {
 	if p.hasEntry() {
 		return true, nil
 	}
+	if p.targetBitPosition() < 0 {
+		return false, nil
+	}
 	bit, err := p.targetBitFromIP(number)
 	if err != nil {
 		return false, err