Temporary header file '/tmp/XDrUy_LHBL/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
#ifdef __cplusplus
// C17 compat layer
#define _Alignof(type) alignof(type)
#endif
#define getaddrinfo_a(a,b,c,d) 
#define _FILE_OFFSET_BITS 64

  // add includes
  #include "/usr/include/samba-4.0/libsmbclient.h"

  // add classes
  _SMBCCTX* tmp_add_class_0;
  f_owner_ex* tmp_add_class_1;
  file_handle* tmp_add_class_2;
  flock64* tmp_add_class_3;
  iovec* tmp_add_class_4;
  libsmb_file_info* tmp_add_class_5;
  print_job_info* tmp_add_class_6;
  smbc_dirent* tmp_add_class_7;
  smbc_notify_callback_action* tmp_add_class_8;
  statx_timestamp* tmp_add_class_9;
  utimbuf* tmp_add_class_10;

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