Temporary header file '/tmp/17q6J8HdsQ/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/lopsub-internal.h"
  #include "/usr/include/lopsub.h"

  // add classes
  lls_command* tmp_add_class_0;
  lls_opt_result* tmp_add_class_1;
  lls_option* tmp_add_class_2;
  lls_parse_result* tmp_add_class_3;
  lls_suite* tmp_add_class_4;
  lls_val* tmp_add_class_5;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/17q6J8HdsQ/dump1.h"

/tmp/17q6J8HdsQ/dump1.h:17:3: error: ‘lls_opt_result’ does not name a type
   17 |   lls_opt_result* tmp_add_class_1;
      |   ^~~~~~~~~~~~~~