const struct workspace *ws)
{
int n_vars = count_one_bits (not_wild);
- struct cell *cell = xzalloc ((sizeof *cell));
+ struct cell *cell = XZALLOC (struct cell);
cell->values = xcalloc (n_vars, sizeof *cell->values);
cell->vars = xcalloc (n_vars, sizeof *cell->vars);
cell->not_wild = not_wild;