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author | Gregory Maxwell <greg@xiph.org> | 2017-04-02 21:28:17 +0000 |
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committer | Gregory Maxwell <greg@xiph.org> | 2017-04-02 21:28:17 +0000 |
commit | ada0caa165905b50db351a56ec124518c922085a (patch) | |
tree | 952f3e34648798d4cd8fa956bd0c9a731a736443 /src/validation.cpp | |
parent | ebfd653798113a53a604dcaa98c56b2d6638ad5d (diff) | |
download | bitcoin-ada0caa165905b50db351a56ec124518c922085a.tar.xz |
Make GetWitnessCommitmentIndex callable on blocks without a coinbase txn.
This isn't actually needed anywhere, but it's less brittle.
Diffstat (limited to 'src/validation.cpp')
-rw-r--r-- | src/validation.cpp | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/validation.cpp b/src/validation.cpp index 6ade633988..7eae5fd800 100644 --- a/src/validation.cpp +++ b/src/validation.cpp @@ -2901,9 +2901,11 @@ bool IsWitnessEnabled(const CBlockIndex* pindexPrev, const Consensus::Params& pa static int GetWitnessCommitmentIndex(const CBlock& block) { int commitpos = -1; - for (size_t o = 0; o < block.vtx[0]->vout.size(); o++) { - if (block.vtx[0]->vout[o].scriptPubKey.size() >= 38 && block.vtx[0]->vout[o].scriptPubKey[0] == OP_RETURN && block.vtx[0]->vout[o].scriptPubKey[1] == 0x24 && block.vtx[0]->vout[o].scriptPubKey[2] == 0xaa && block.vtx[0]->vout[o].scriptPubKey[3] == 0x21 && block.vtx[0]->vout[o].scriptPubKey[4] == 0xa9 && block.vtx[0]->vout[o].scriptPubKey[5] == 0xed) { - commitpos = o; + if (!block.vtx.empty()) { + for (size_t o = 0; o < block.vtx[0]->vout.size(); o++) { + if (block.vtx[0]->vout[o].scriptPubKey.size() >= 38 && block.vtx[0]->vout[o].scriptPubKey[0] == OP_RETURN && block.vtx[0]->vout[o].scriptPubKey[1] == 0x24 && block.vtx[0]->vout[o].scriptPubKey[2] == 0xaa && block.vtx[0]->vout[o].scriptPubKey[3] == 0x21 && block.vtx[0]->vout[o].scriptPubKey[4] == 0xa9 && block.vtx[0]->vout[o].scriptPubKey[5] == 0xed) { + commitpos = o; + } } } return commitpos; |