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

  // add defines
  #define __STDC_VERSION__ 201710L
#define _TIME_BITS 64
#define _FILE_OFFSET_BITS 64
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/systemd/sd-bus-protocol.h"
  #include "/usr/include/systemd/sd-bus-vtable.h"
  #include "/usr/include/systemd/sd-bus.h"
  #include "/usr/include/systemd/sd-daemon.h"
  #include "/usr/include/systemd/sd-device.h"
  #include "/usr/include/systemd/sd-event.h"
  #include "/usr/include/systemd/sd-gpt.h"
  #include "/usr/include/systemd/sd-hwdb.h"
  #include "/usr/include/systemd/sd-id128.h"
  #include "/usr/include/systemd/sd-journal.h"
  #include "/usr/include/systemd/sd-login.h"
  #include "/usr/include/systemd/sd-messages.h"
  #include "/usr/include/systemd/sd-path.h"

  // add classes
  _G_fpos64_t* tmp_add_class_0;
  _G_fpos_t* tmp_add_class_1;
  _IO_cookie_io_functions_t* tmp_add_class_2;
  cmsghdr* tmp_add_class_3;
  epoll_data* tmp_add_class_4;
  epoll_event* tmp_add_class_5;
  inotify_event* tmp_add_class_6;
  iovec* tmp_add_class_7;
  linger* tmp_add_class_8;
  mmsghdr* tmp_add_class_9;
  msghdr* tmp_add_class_10;
  osockaddr* tmp_add_class_11;
  sd_bus_vtable* tmp_add_class_12;
  sd_id128* tmp_add_class_13;
  signalfd_siginfo* tmp_add_class_14;
  sockaddr* tmp_add_class_15;
  sockaddr_storage* tmp_add_class_16;
  statx_timestamp* tmp_add_class_17;
  ucontext_t* tmp_add_class_18;
  ucred* tmp_add_class_19;

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