Temporary header file '/tmp/Qh7dAkGFI0/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/libunwind/__libunwind_config.h"
  #include "/usr/include/libunwind/libunwind.h"
  #include "/usr/include/libunwind/mach-o/compact_unwind_encoding.h"
  #include "/usr/include/libunwind/unwind.h"

  // add classes
  _Unwind_Control_Block* tmp_add_class_0;
  dwarf_eh_bases* tmp_add_class_1;
  unw_context_t* tmp_add_class_2;
  unw_cursor_t* tmp_add_class_3;
  unw_proc_info_t* tmp_add_class_4;
  unwind_info_compressed_second_level_page_header* tmp_add_class_5;
  unwind_info_regular_second_level_entry* tmp_add_class_6;
  unwind_info_regular_second_level_page_header* tmp_add_class_7;
  unwind_info_section_header* tmp_add_class_8;
  unwind_info_section_header_index_entry* tmp_add_class_9;
  unwind_info_section_header_lsda_index_entry* tmp_add_class_10;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/Qh7dAkGFI0/dump1.h"  -I/usr/include/libunwind