+}
+sub exit_hook_stop
+{
+ do { cluck "exit_hook_stop() without exit_hook_start()?"; return; }
+ if \&exit_hook ne \&CORE::GLOBAL::exit;
+ cluck "INTERNAL: exit_orig uninitialized" if !$exit_orig;
+ *CORE::GLOBAL::exit=$exit_orig;
+ $exit_orig=undef();
+}