Hi again,

Recently I have created my own library (dynamically linked, Linux controlled os) and managed to successfully linked my application to it.
Sadly I encountered a problem that in previous version (in which classes located now in library, where in application code). Where is the problem ?

Here is the code snippet which generates SIGSEGV exception.
Qt Code: 
  1. void WorkerQuery::worker_mode(const QSqlRecord& rec) {
  2.     w = new Worker(selfPointer);
  3.     w->setPrimaryKey(rec.value("idWorker").toInt());
  4.     w->setNames(rec.value("fname").toString(),rec.value("lname").toString()); //PROBLEM HERE
  5.     w->setLogin(rec.value("login").toString());                                            //PROBLEM ALSO HERE
  6.     w->setPriviliges(rec.value("authorization").toString());                            //BUT THIS LINE GENERATES NO ERROR
  7. }
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QtCreator right after it's caught the exception is moving me to Dissambler, where I can see disassembled operator= from QString library and debugger is pointing at
Qt Code: 
  1. 0x7ffff6921e50  <+032>:	lock decl (%rax)
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this instruction

One more thing...
here are declarations of the method setNames and setLogin
Qt Code: 
  1. void setLogin(const QString &login);
  2. void setNames(const QString &a,const QString &b);
  3. void setPriviliges(const QString &c);
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What is more interesting is that only setLogin, setNames generates exception but setPriviliges generates no error still having same declarations as for example setLogin.