Temporary header file '/tmp/oKBJGezYF4/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/lfp/aux.h"
  #include "/usr/include/lfp/buildinfo.h"
  #include "/usr/include/lfp/dirent.h"
  #include "/usr/include/lfp/errno.h"
  #include "/usr/include/lfp/fcntl.h"
  #include "/usr/include/lfp/ioctl.h"
  #include "/usr/include/lfp/mman.h"
  #include "/usr/include/lfp/resource.h"
  #include "/usr/include/lfp/select.h"
  #include "/usr/include/lfp/sendfile.h"
  #include "/usr/include/lfp/signal.h"
  #include "/usr/include/lfp/socket.h"
  #include "/usr/include/lfp/spawn.h"
  #include "/usr/include/lfp/stat.h"
  #include "/usr/include/lfp/stdlib.h"
  #include "/usr/include/lfp/strerror.h"
  #include "/usr/include/lfp/string.h"
  #include "/usr/include/lfp/syslog.h"
  #include "/usr/include/lfp/time.h"
  #include "/usr/include/lfp/unistd.h"
  #include "/usr/include/lfp/wait.h"
  #include "/usr/include/lfp.h"

  // add classes
  cmsghdr* 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;
  itimerval* tmp_add_class_5;
  lfp_buildinfo* tmp_add_class_6;
  linger* tmp_add_class_7;
  mmsghdr* tmp_add_class_8;
  msghdr* tmp_add_class_9;
  osockaddr* tmp_add_class_10;
  rlimit64* tmp_add_class_11;
  sockaddr* tmp_add_class_12;
  sockaddr_storage* tmp_add_class_13;
  statx_timestamp* tmp_add_class_14;
  termio* tmp_add_class_15;
  ucontext_t* tmp_add_class_16;
  ucred* tmp_add_class_17;
  winsize* tmp_add_class_18;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/oKBJGezYF4/dump1.h"

In file included from /tmp/oKBJGezYF4/dump1.h:24:
/usr/include/lfp/spawn.h:127:31: error: expected ‘,’ or ‘...’ before ‘pid’
  127 | int lfp_spawn(pid_t *restrict pid,
      |                               ^~~
/usr/include/lfp/spawn.h:134:32: error: expected ‘,’ or ‘...’ before ‘pid’
  134 | int lfp_spawnp(pid_t *restrict pid,
      |                                ^~~
/tmp/oKBJGezYF4/dump1.h:42:3: error: ‘lfp_buildinfo’ does not name a type
   42 |   lfp_buildinfo* tmp_add_class_6;
      |   ^~~~~~~~~~~~~