Class failure

dut.hh:13–25

namespace dut {
  
struct failure : public std::exception {
  std::string errstr;
  std::string sqlstate;
  const char* what() const throw()
  {
    return errstr.c_str();
  }
  failure(const char *s, const char *sqlstate_ = "") throw()
       : errstr(), sqlstate() {
    errstr = s;
    sqlstate = sqlstate_;
  };
};

struct broken : failure {
  broken(const char *s, const char *sqlstate_ = "") throw()