abbrev = (struct abbrev_info *) xmalloc (sizeof (struct abbrev_info));
abbrev = (struct abbrev_info *) obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info));
dwarf_alloc_abbrev (void){  struct abbrev_info *abbrev;  abbrev = (struct abbrev_info *) xmalloc (sizeof (struct abbrev_info));  memset (abbrev, 0, sizeof (struct abbrev_info));  return (abbrev);}