Temporary header file '/tmp/mt1BvhuPlb/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/docopt/docopt.h"
  #include "/usr/include/docopt/docopt_private.h"
  #include "/usr/include/docopt/docopt_util.h"
  #include "/usr/include/docopt/docopt_value.h"

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

  // 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/mt1BvhuPlb/dump1.h"

In file included from /tmp/mt1BvhuPlb/dump1.h:13:
/usr/include/docopt/docopt_private.h: In member function ‘void docopt::BranchPattern::fix_repeating_arguments()’:
/usr/include/docopt/docopt_private.h:424:60: error: ‘split’ was not declared in this scope
  424 |                                                 newValue = split(leaf->getValue().asString());
      |                                                            ^~~~~