unsigned char *end;
US_CHAR_TYPE *end;
insert_op2 (op, loc, arg1, arg2, end)    re_opcode_t op;    unsigned char *loc;    int arg1, arg2;    unsigned char *end;{  register unsigned char *pfrom = end;  register unsigned char *pto = end + 5;  while (pfrom != loc)    *--pto = *--pfrom;  store_op2 (op, loc, arg1, arg2);}