test: code shrink supplementary groups

Since we don't use is_in_supplementary_groups() there's no need for
the cached_groupinfo structure to include the members required for
its support or for them to be initialised.

Saves 32 bytes.

2 files changed, 8 insertions, 0 deletions

diff --git a/coreutils/test.c b/coreutils/test.c
index b63e33cc0..3d38ead00 100644
--- a/coreutils/test.c
+++ b/coreutils/test.c
@@ -1022,10 +1022,14 @@ int test_main(int argc, char **argv)
 
         info.euid = -1;
         info.egid = -1;
+#if !ENABLE_PLATFORM_MINGW32
         info.ngroups = 0;
         info.supplementary_array = NULL;
+#endif
         r = test_main2(&info, argc, argv);
+#if !ENABLE_PLATFORM_MINGW32
         free(info.supplementary_array);
+#endif
 
         return r;
 }
diff --git a/include/libbb.h b/include/libbb.h
index ed8892562..bc1453e12 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1268,8 +1268,12 @@ gid_t *bb_getgroups(int *ngroups, gid_t *group_array) FAST_FUNC;
 struct cached_groupinfo {
         uid_t euid;
         gid_t egid;
+#if !ENABLE_PLATFORM_MINGW32
+        // If these are ever restored on Windows it will be necessary to alter
+        // globals_misc_size()/globals_misc_copy() in ash.
         int ngroups;
         gid_t *supplementary_array;
+#endif
 };
 uid_t FAST_FUNC get_cached_euid(uid_t *euid);
 gid_t FAST_FUNC get_cached_egid(gid_t *egid);