Method ErrConvString

sql/sql_error.h:534–538

  size_t buf_length;
public:
  ErrConvString(String *str)
  {
    buf_length= err_conv(err_buffer, sizeof(err_buffer), str->ptr(),
                         str->length(), str->charset());
  }

  ErrConvString(const char *str, const CHARSET_INFO* cs)
  {