PERLVAR(Ifilemode, int) /* so nextargv() can preserve mode */
PERLVAR(Ilastfd, int) /* what to preserve mode on */
PERLVAR(Ioldname, char *) /* what to preserve mode on */
-PERLVAR(IArgv, char **) /* stuff to free from do_aexec, vfork safe */
+PERLVAR(IArgv, const char **) /* stuff to free from do_aexec, vfork safe */
PERLVAR(ICmd, char *) /* stuff to free from do_aexec, vfork safe */
/* Elements in this array have ';' appended and are injected as a single line
into the tokeniser. You can't put any (literal) newlines into any program