const DWARFDebugLine::LineTable *
DWARFDebugLine::getOrParseLineTable(DataExtractor debug_line_data,
uint32_t offset) {
- LineTableIter pos = LineTableMap.find(offset);
- if (pos == LineTableMap.end()) {
+ std::pair<LineTableIter, bool> pos =
+ LineTableMap.insert(LineTableMapTy::value_type(offset, LineTable()));
+ if (pos.second) {
// Parse and cache the line table for at this offset.
State state;
if (!parseStatementTable(debug_line_data, &offset, state))
return 0;
- // FIXME: double lookup.
- LineTableMap[offset] = state;
- return &LineTableMap[offset];
+ pos.first->second = state;
}
- return &pos->second;
+ return &pos.first->second;
}
bool