pop_modules
if ((i = pop_modules(Oldlist.sl_nmods - 1))
if ((i = pop_modules(Oldlist.sl_nmods - 1)) !=
if ((j = pop_modules(i)) != i) {
if (pop_modules(1) != 1)
if ((i = pop_modules(npop)) != npop) {
static int pop_modules(int);