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Add assert and comment for subtle pay-to-script-hash logic

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Gavin Andresen 2012-11-21 13:58:10 -05:00
parent 4725e96a3a
commit a91efb2d8d
1 changed files with 5 additions and 0 deletions
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src/script.cpp
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@ -1658,6 +1658,11 @@ bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const C
if (!scriptSig.IsPushOnly()) // scriptSig must be literals-only if (!scriptSig.IsPushOnly()) // scriptSig must be literals-only
return false; // or validation fails return false; // or validation fails
// stackCopy cannot be empty here, because if it was the
// P2SH HASH <> EQUAL scriptPubKey would be evaluated with
// an empty stack and the EvalScript above would return false.
assert(!stackCopy.empty());
const valtype& pubKeySerialized = stackCopy.back(); const valtype& pubKeySerialized = stackCopy.back();
CScript pubKey2(pubKeySerialized.begin(), pubKeySerialized.end()); CScript pubKey2(pubKeySerialized.begin(), pubKeySerialized.end());
popstack(stackCopy); popstack(stackCopy);