Building libcomps with GCC 14 fails here:
https://build.opensuse.org/package/live_build_log/openSUSE:Factory:Staging:Gcc7/libcomps/standard/x86_64

Due to (exhaustive list of errors):

libcomps-0.1.20/libcomps/tests/check_parse.c: In function ‘test_arch_fn’:
libcomps-0.1.20/libcomps/tests/check_parse.c:588:11: error: assignment to ‘COMPS_DocGroup *’ from incompatible pointer type ‘COMPS_DocCategory *’ [-Wincompatible-pointer-types]
  588 |         g = (COMPS_DocCategory*)it->comps_obj;
      |           ^
libcomps-0.1.20/libcomps/tests/check_parse.c:589:52: error: passing argument 1 of ‘comps_doccategory_get_id’ from incompatible pointer type [-Wincompatible-pointer-types]
  589 |         str = (COMPS_Str*)comps_doccategory_get_id(g);
      |                                                    ^
      |                                                    |
      |                                                    COMPS_DocGroup *
In file included from /home/abuild/rpmbuild/BUILD/libcomps-0.1.20/libcomps/tests/../src/comps_objradix.h:28,
                 from /home/abuild/rpmbuild/BUILD/libcomps-0.1.20/libcomps/tests/../src/comps_objdict.h:32,
                 from /home/abuild/rpmbuild/BUILD/libcomps-0.1.20/libcomps/tests/../src/comps_doc.h:24,
                 from /home/abuild/rpmbuild/BUILD/libcomps-0.1.20/libcomps/tests/check_parse.c:23:
libcomps-0.1.20/libcomps/tests/../src/comps_doccategory.h:110:24: note: expected ‘COMPS_DocCategory *’ but argument is of type ‘COMPS_DocGroup *’
  110 | HEAD_COMPS_PROP_GETTER(category, COMPS_DocCategory, id) /*comps_utils.h macro*/
      |
libcomps-0.1.20/libcomps/tests/../src/comps_utils.h:94:71: note: in definition of macro ‘HEAD_COMPS_PROP_GETTER’
   94 |                                                             (OBJTYPE *OBJNAME);
      |                                                                       ^~~~~~~
libcomps-0.1.20/libcomps/tests/check_parse.c:608:11: error: assignment to ‘COMPS_DocGroup *’ from incompatible pointer type ‘COMPS_DocEnv *’ [-Wincompatible-pointer-types]
  608 |         g = (COMPS_DocEnv*)it->comps_obj;
      |           ^
libcomps-0.1.20/libcomps/tests/check_parse.c:609:47: error: passing argument 1 of ‘comps_docenv_get_id’ from incompatible pointer type [-Wincompatible-pointer-types]
  609 |         str = (COMPS_Str*)comps_docenv_get_id(g);
      |                                               ^
      |                                               |
      |                                               COMPS_DocGroup *
libcomps-0.1.20/libcomps/tests/../src/comps_docenv.h:92:24: note: expected ‘COMPS_DocEnv *’ but argument is of type ‘COMPS_DocGroup *’
   92 | HEAD_COMPS_PROP_GETTER(env, COMPS_DocEnv, id) /*comps_utils.h macro*/
      |



See the meta bug#1220571 for more info.