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whisper: fix issue in topic list copy

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Fixes #16271. What was appeneded was a pointer to
an object that changes during the iteration.
This commit is contained in:
Guillaume Ballet 2018-03-23 16:35:50 +01:00
parent 85ea9159d0
commit fd8a2786d4
1 changed files with 4 additions and 3 deletions
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7
whisper/whisperv6/api.go
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@ -558,9 +558,10 @@ func (api *PublicWhisperAPI) NewMessageFilter(req Criteria) (string, error) {
} }
if len(req.Topics) > 0 { if len(req.Topics) > 0 {
topics = make([][]byte, 0, len(req.Topics)) topics = make([][]byte, len(req.Topics))
for _, topic := range req.Topics { for i, topic := range req.Topics {
topics = append(topics, topic[:]) topics = append(topics, make([]byte, 0, len(topic)))
copy(topics[i], topic[:])
} }
} }