Differential D3473 Diff 10286 src/script/interpreter.cpp

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src/script/interpreter.cpp

Show First 20 Lines • Show All 1,000 Lines • ▼ Show 20 Lines	try {

// stack depth of the dummy element		// stack depth of the dummy element
const size_t idxDummy = idxTopSig + nSigsCount;		const size_t idxDummy = idxTopSig + nSigsCount;
if (stack.size() < idxDummy) {		if (stack.size() < idxDummy) {
return set_error(		return set_error(
serror, SCRIPT_ERR_INVALID_STACK_OPERATION);		serror, SCRIPT_ERR_INVALID_STACK_OPERATION);
}		}

		bool fSuccess = true;

		// Subset of script starting at the most recent
		// codeseparator
		CScript scriptCode(pbegincodehash, pend);

// A bug causes CHECKMULTISIG to consume one extra		// A bug causes CHECKMULTISIG to consume one extra
// argument whose contents were not checked in any way.		// argument whose contents were not checked in any way.
//		//
// Unfortunately this is a potential source of		// Unfortunately this is a potential source of
// mutability, so optionally verify it is exactly equal		// mutability, so optionally verify it is exactly equal
// to zero.		// to zero.
if ((flags & SCRIPT_VERIFY_NULLDUMMY) &&		if ((flags & SCRIPT_VERIFY_NULLDUMMY) &&
stacktop(-idxDummy).size()) {		stacktop(-idxDummy).size()) {
return set_error(serror, SCRIPT_ERR_SIG_NULLDUMMY);		return set_error(serror, SCRIPT_ERR_SIG_NULLDUMMY);
}		}

// Subset of script starting at the most recent
// codeseparator
CScript scriptCode(pbegincodehash, pend);

// Remove signature for pre-fork scripts		// Remove signature for pre-fork scripts
for (int k = 0; k < nSigsCount; k++) {		for (int k = 0; k < nSigsCount; k++) {
valtype &vchSig = stacktop(-idxTopSig - k);		valtype &vchSig = stacktop(-idxTopSig - k);
CleanupScriptCode(scriptCode, vchSig, flags);		CleanupScriptCode(scriptCode, vchSig, flags);
}		}

bool fSuccess = true;
size_t ikey = idxTopKey;		size_t ikey = idxTopKey;
size_t isig = idxTopSig;		size_t isig = idxTopSig;
int nSigsRemaining = nSigsCount;		int nSigsRemaining = nSigsCount;
int nKeysRemaining = nKeysCount;		int nKeysRemaining = nKeysCount;
while (fSuccess && nSigsRemaining > 0) {		while (fSuccess && nSigsRemaining > 0) {
valtype &vchSig = stacktop(-isig);		valtype &vchSig = stacktop(-isig);
valtype &vchPubKey = stacktop(-ikey);		valtype &vchPubKey = stacktop(-ikey);

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