C++ and sqlite3, connection only opens once after compilation - c++

Question

I am creating a wrapper class for working with sqlite3 in a command-line C++ application on my macbook. The database connection only works once after compilation.
First, the wrapper class (cmodel::dbpath is defined in another header, and I output it in the constructor to be sure):
class dbconnect {
sqlite3 *db;
const char *dbname;
public:
dbconnect();
~dbconnect();
};
dbconnect::dbconnect() :
dbname(cmodel::dbpath) {
// Output the path
std::cout << this->dbname << std::endl;
sqlite3_initialize();
// initialize this->db
int state = sqlite3_open_v2(this->dbname, &(this->db), SQLITE_OPEN_READWRITE, NULL);
if(state == SQLITE_OK) {
printf("Database opened successfully\n");
} else {
printf("%s\n", sqlite3_errmsg(this->db));
}
}
dbconnect::~dbconnect() {
std::cout << "Destructor called" << std::endl;
sqlite3_close_v2(this->db);
sqlite3_shutdown();
}
The main() function
int main() {
dbconnect db;
return 0;
}
And here is my prompt
$ make
g++ -lpthread -ldl ... /Users/awesomeuser/bin/cmodel
$ cmodel # first run
/Users/awesomeuser/.cmodel/cmodel.db
Database opened successfully
Destructor called
$ cmodel # second run
/Users/awesomeuser/.cmodel/cmodel.db
unable to open database file
Destructor called
To be honest, I'm not a big fan of these specific questions, but I'm just baffled. Any idea why this is happening?
UPDATE:
Ok here's something extra which is happening. When I open the db in the mode SQLITE_READWRITE | SQLITE_CREATE (which creates the database if it doesn't exist), a new database is created titled cmodel.XTUM in the same directory as cmodel.db. Does this sound familiar?