safe_alloc
ss = safe_alloc(sizeof (struct snapshot));
new = safe_alloc(sizeof (struct iodev_snapshot));
target = safe_alloc(1 + p2 - p1);
tptr = safe_alloc(sizeof (*old));
tptr->is_pretty = safe_alloc(strlen(old->is_pretty) + 1);
entry = safe_alloc(sizeof (disk_list_t));
rstr = safe_alloc(len);
item = safe_alloc(sizeof (mnt_t));
void *safe_alloc(size_t size);
df.if_names = safe_alloc(count * sizeof (char *));
tmp = safe_alloc(sizeof (format_t));
df.if_names = safe_alloc(df.if_max_iodevs * sizeof (char *));