SymbolLookupSource
struct SymbolLookupSource;
SymbolLookupSource(int fd)
SymbolLookupSource* source = new(std::nothrow) SymbolLookupSource(fFD);
SymbolLookupSource* source = new(std::nothrow) SymbolLookupSource(fFD);
BReference<SymbolLookupSource> sourceReference(source, true);