Temporary header file '/tmp/A_sF0bKxJN/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

  // add includes
  #include "/usr/include/libnftnl/batch.h"
  #include "/usr/include/libnftnl/chain.h"
  #include "/usr/include/libnftnl/common.h"
  #include "/usr/include/libnftnl/expr.h"
  #include "/usr/include/libnftnl/flowtable.h"
  #include "/usr/include/libnftnl/gen.h"
  #include "/usr/include/libnftnl/object.h"
  #include "/usr/include/libnftnl/rule.h"
  #include "/usr/include/libnftnl/ruleset.h"
  #include "/usr/include/libnftnl/set.h"
  #include "/usr/include/libnftnl/table.h"
  #include "/usr/include/libnftnl/trace.h"
  #include "/usr/include/libnftnl/udata.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;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/A_sF0bKxJN/dump1.h"