Temporary header file '/tmp/8mZXv6ptNL/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/sprng/interface.h"
  #include "/usr/include/sprng/sprng.h"
  #include "/usr/include/sprng/sprng_f.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/8mZXv6ptNL/dump1.h"

In file included from /tmp/8mZXv6ptNL/dump1.h:14:
/usr/include/sprng/sprng_f.h:66:11: error: ‘external’ does not name a type; did you mean ‘extern’?
   66 |           external fmake_new_seed
      |           ^~~~~~~~
      |           extern

