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arangodb
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fixed undefined behavior

This commit is contained in:
Jan Steemann 2016-01-13 11:17:08 +01:00
parent 59a8cd13dc
commit 985c51cf72
1 changed files with 5 additions and 3 deletions
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8
arangod/Aql/CollectBlock.cpp
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@ -115,6 +115,7 @@ void SortedCollectBlock::CollectGroup::addValues(AqlItemBlock const* src,
if (count) {
groupLength += lastRow + 1 - firstRow;
} else {
TRI_ASSERT(src != nullptr);
auto block = src->slice(firstRow, lastRow + 1);
try {
TRI_IF_FAILURE("CollectGroup::addValues") {
@ -439,6 +440,7 @@ void SortedCollectBlock::emitGroup(AqlItemBlock const* cur, AqlItemBlock* res,
size_t row) {
if (row > 0) {
// re-use already copied AqlValues
TRI_ASSERT(cur != nullptr);
for (RegisterId i = 0; i < cur->getNrRegs(); i++) {
res->setValue(row, i, res->getValue(0, i));
// Note: if this throws, then all values will be deleted
@ -454,10 +456,9 @@ void SortedCollectBlock::emitGroup(AqlItemBlock const* cur, AqlItemBlock* res,
// that a group might theoretically consist of multiple documents, from
// different collections. but there
// is only one collection pointer per output register
auto document = cur->getDocumentCollection(it.second);
res->setValue(row, it.first,
AqlValue(new Json(_currentGroup.groupValues[i].toJson(
_trx, document, true))));
_trx, _currentGroup.collections[i], true))));
} else {
res->setValue(row, it.first, _currentGroup.groupValues[i]);
}
@ -471,8 +472,9 @@ void SortedCollectBlock::emitGroup(AqlItemBlock const* cur, AqlItemBlock* res,
size_t j = 0;
for (auto& it : _currentGroup.aggregators) {
RegisterId reg = _aggregateRegisters[j].second;
TRI_document_collection_t const* collection = cur->getDocumentCollection(reg);
if (_currentGroup.rowsAreValid) {
TRI_ASSERT(cur != nullptr);
TRI_document_collection_t const* collection = cur->getDocumentCollection(reg);
for (size_t r = _currentGroup.firstRow; r < _currentGroup.lastRow + 1; ++r) {
it->reduce(cur->getValueReference(r, reg), collection);
}