12   std::string *Str;  member
14   Global() : Str(nullptr), Vec(nullptr) {}  in Global()
16     if (Str) {  in ~Global()
18         Vec->push_back(*Str);  in ~Global()
19       *Str = "Global::~Global";  in ~Global()
27   std::string &Str;  member
28   Local(std::string &S) : Str(S) {  in Local()
29     Str = "Local::Local";  in Local()
30     if (Glb.Str && !Glb.Str->empty())  in Local()
31       Str += std::string("(") + *Glb.Str + std::string(")");  in Local()
33   ~Local() { Str = "Local::~Local"; }  in ~Local()
39   Glb.Str = &GStr;  in SetStrings()