Temporary header file '/tmp/YVcpeV2Ohs/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/dssi.h"

  // add classes
  _DSSI_Descriptor* tmp_add_class_0;
  _DSSI_Program_Descriptor* tmp_add_class_1;
  _LADSPA_Descriptor* tmp_add_class_2;
  _LADSPA_PortRangeHint* tmp_add_class_3;
  snd_seq_addr* tmp_add_class_4;
  snd_seq_connect* tmp_add_class_5;
  snd_seq_ev_ctrl* tmp_add_class_6;
  snd_seq_ev_ext* tmp_add_class_7;
  snd_seq_ev_note* tmp_add_class_8;
  snd_seq_ev_queue_control* tmp_add_class_9;
  snd_seq_ev_raw32* tmp_add_class_10;
  snd_seq_ev_raw8* tmp_add_class_11;
  snd_seq_event* tmp_add_class_12;
  snd_seq_queue_skew* tmp_add_class_13;
  snd_seq_real_time* tmp_add_class_14;
  snd_seq_result* tmp_add_class_15;
  snd_seq_timestamp* tmp_add_class_16;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/YVcpeV2Ohs/dump1.h"