Temporary header file '/tmp/PvW9H6JXLc/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/pb.h"
  #include "/usr/include/pb_common.h"
  #include "/usr/include/pb_decode.h"
  #include "/usr/include/pb_encode.h"

  // add namespaces
  namespace nanopb{typedef int tmp_add_type_1;}
  nanopb::tmp_add_type_1 tmp_add_func_1(){return 0;};

  // add classes
  pb_bytes_array_s* tmp_add_class_0;
  pb_callback_s* tmp_add_class_1;
  pb_extension_s* tmp_add_class_2;
  pb_extension_type_s* tmp_add_class_3;
  pb_field_iter_s* tmp_add_class_4;
  pb_istream_s* tmp_add_class_5;
  pb_msgdesc_s* tmp_add_class_6;
  pb_ostream_s* tmp_add_class_7;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/PvW9H6JXLc/dump1.h"