This behaviour does not pass on *this* platform.

--- m4-1.4.19/tests/test-posix_spawn_file_actions_addclose.c.old	2021-04-22 15:28:47.000000000 -0500
+++ m4-1.4.19/tests/test-posix_spawn_file_actions_addclose.c	2022-02-09 03:27:59.030000000 -0600
@@ -54,13 +54,6 @@
     errno = 0;
     ASSERT (posix_spawn_file_actions_addclose (&actions, -1) == EBADF);
   }
-  /* This behaviour is not mandated by POSIX, but happens to pass on all
-     platforms.  */
-  {
-    int bad_fd = big_fd ();
-    errno = 0;
-    ASSERT (posix_spawn_file_actions_addclose (&actions, bad_fd) == EBADF);
-  }
 
   posix_spawn_file_actions_destroy (&actions);