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core: fix potential issue with header list init

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If we're to receive some 500 headers (less than `headerBatchCount`) and quit
before receiving more of them we end up with clean `bc.headerList` that will
be inited going backwards to the `targetHash`, but code path doesn't add add
the `targetHash` itself which it should do in this particular case, otherwise
we end with no genesis block hash in the list.
This commit is contained in:
Roman Khimov 2019-11-06 18:00:14 +03:00
parent b5199625cd
commit c567307748
1 changed files with 1 additions and 1 deletions
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2
pkg/core/blockchain.go
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@ -153,6 +153,7 @@ func (bc *Blockchain) init() error {
return err return err
} }
targetHash = genesisBlock.Hash() targetHash = genesisBlock.Hash()
bc.headerList.Add(targetHash)
} }
headers := make([]*Header, 0) headers := make([]*Header, 0)
@ -164,7 +165,6 @@ func (bc *Blockchain) init() error {
headers = append(headers, header) headers = append(headers, header)
hash = header.PrevHash hash = header.PrevHash
} }
headerSliceReverse(headers) headerSliceReverse(headers)
for _, h := range headers { for _, h := range headers {
if !h.Verify() { if !h.Verify() {