Temporary header file '/tmp/GSd1J5cEip/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
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/libscan.h"
  #include "/usr/include/libubi.h"
  #include "/usr/include/libubigen.h"

  // add classes
  ubi_attach_req* tmp_add_class_0;
  ubi_attach_request* tmp_add_class_1;
  ubi_blkcreate_req* tmp_add_class_2;
  ubi_dev_info* tmp_add_class_3;
  ubi_info* tmp_add_class_4;
  ubi_leb_change_req* tmp_add_class_5;
  ubi_map_req* tmp_add_class_6;
  ubi_mkvol_req* tmp_add_class_7;
  ubi_mkvol_request* tmp_add_class_8;
  ubi_rnvol_req* tmp_add_class_9;
  ubi_rsvol_req* tmp_add_class_10;
  ubi_scan_info* tmp_add_class_11;
  ubi_set_vol_prop_req* tmp_add_class_12;
  ubi_vol_info* tmp_add_class_13;
  ubigen_info* tmp_add_class_14;
  ubigen_vol_info* tmp_add_class_15;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/GSd1J5cEip/dump1.h"

In file included from /tmp/GSd1J5cEip/dump1.h:12:
/usr/include/libscan.h:59:24: error: ‘UBI_MAX_ERASECOUNTER’ was not declared in this scope
   59 |         EC_MAX       = UBI_MAX_ERASECOUNTER,
      |                        ^~~~~~~~~~~~~~~~~~~~