Temporary header file '/tmp/UXC6gUTrVB/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED

  // add includes
  #include "/usr/include/libusb-1.0/libusb.h"

  // add classes
  itimerval* tmp_add_class_0;
  libusb_bos_descriptor* tmp_add_class_1;
  libusb_bos_dev_capability_descriptor* tmp_add_class_2;
  libusb_config_descriptor* tmp_add_class_3;
  libusb_container_id_descriptor* tmp_add_class_4;
  libusb_control_setup* tmp_add_class_5;
  libusb_device_descriptor* tmp_add_class_6;
  libusb_endpoint_descriptor* tmp_add_class_7;
  libusb_interface* tmp_add_class_8;
  libusb_interface_descriptor* tmp_add_class_9;
  libusb_iso_packet_descriptor* tmp_add_class_10;
  libusb_pollfd* tmp_add_class_11;
  libusb_ss_endpoint_companion_descriptor* tmp_add_class_12;
  libusb_ss_usb_device_capability_descriptor* tmp_add_class_13;
  libusb_transfer* tmp_add_class_14;
  libusb_usb_2_0_extension_descriptor* tmp_add_class_15;
  libusb_version* tmp_add_class_16;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/UXC6gUTrVB/dump1.h"