Comment # 12 on bug 914255 from Richard Biener

Hmm,  So you are comparing two std::string by pointer equality on their
c_str()?
Note that with the new C++ ABI now in effect the std::string implementation
changed so you might have relied on an implementation detail here (the old
string
was referenced counted copy-on-write while the new isn't).

So ...

    /**
     * !!! It should actualy be const !!!
     * But that way default copy and assingment can be used.
     **/
    std::string _name;

you are hit by this maybe?  With the old std::string copying/assigning
would have retained c_str () but the new std::string will copy.