Symbol* MethodHandles::lookup_basic_type_signature(Symbol* sig, bool keep_last_arg, TRAPS) {
  Symbol* bsig = NULL;
  if (sig == NULL) {
    return sig;
  } else if (is_basic_type_signature(sig)) {
    sig->increment_refcount();
    return sig;  // that was easy
  } else if (sig->byte_at(0) != '(') {
    BasicType bt = char2type(sig->byte_at(0));
    if (is_subword_type(bt)) {
      bsig = vmSymbols::int_signature();
    } else {
      assert(bt == T_OBJECT || bt == T_ARRAY, "is_basic_type_signature was false");
      bsig = vmSymbols::object_signature();
    }
  } else {
    ResourceMark rm;
    stringStream buffer(128);
    buffer.put('(');
    int arg_pos = 0, keep_arg_pos = -1;
    if (keep_last_arg)
      keep_arg_pos = ArgumentCount(sig).size() - 1;
    for (SignatureStream ss(sig); !ss.is_done(); ss.next()) {
      BasicType bt = ss.type();
      size_t this_arg_pos = buffer.size();
      if (ss.at_return_type()) {
        buffer.put(')');
      }
      if (arg_pos == keep_arg_pos) {
        buffer.write((char*) ss.raw_bytes(),
                     (int)   ss.raw_length());
      } else if (bt == T_OBJECT || bt == T_ARRAY) {
        buffer.write(OBJ_SIG, OBJ_SIG_LEN);
      } else {
        if (is_subword_type(bt))
          bt = T_INT;
        buffer.put(type2char(bt));
      }
      arg_pos++;
    }
    const char* sigstr =       buffer.base();
    int         siglen = (int) buffer.size();
    bsig = SymbolTable::new_symbol(sigstr, siglen, THREAD);
  }
  assert(is_basic_type_signature(bsig) ||
         // detune assert in case the injected argument is not a basic type:
         keep_last_arg, "");
  return bsig;
}
Symbol* MethodHandles::lookup_basic_type_signature(Symbol* sig, bool keep_last_arg, TRAPS) {
  Symbol* bsig = NULL;
  if (sig == NULL) {
    return sig;
  } else if (is_basic_type_signature(sig)) {
    sig->increment_refcount();
    return sig;   
  } else if (sig->byte_at(0) != '(') {
    BasicType bt = char2type(sig->byte_at(0));
    if (is_subword_type(bt)) {
      bsig = vmSymbols::int_signature();
    } else {
      assert(bt == T_OBJECT || bt == T_ARRAY, "is_basic_type_signature was false");
      bsig = vmSymbols::object_signature();
    }
  } else {
    ResourceMark rm;
    stringStream buffer(128);
    buffer.put('(');
    int arg_pos = 0, keep_arg_pos = -1;
    if (keep_last_arg)
      keep_arg_pos = ArgumentCount(sig).size() - 1;
    for (SignatureStream ss(sig); !ss.is_done(); ss.next()) {
      BasicType bt = ss.type();
      size_t this_arg_pos = buffer.size();
      if (ss.at_return_type()) {
        buffer.put(')');
      }
      if (arg_pos == keep_arg_pos) {
        buffer.write((char*) ss.raw_bytes(),
                     (int)   ss.raw_length());
      } else if (bt == T_OBJECT || bt == T_ARRAY) {
        buffer.write(OBJ_SIG, OBJ_SIG_LEN);
      } else {
        if (is_subword_type(bt))
          bt = T_INT;
        buffer.put(type2char(bt));
      }
      arg_pos++;
    }
    const char* sigstr =       buffer.base();
    int         siglen = (int) buffer.size();
    bsig = SymbolTable::new_symbol(sigstr, siglen, THREAD);
  }
  assert(is_basic_type_signature(bsig) ||
          
         keep_last_arg, "");
  return bsig;
}