Stats

  • Locked Locked
  • Replies 1
  • Subscribers 65
  • Views 1269
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

help with e *** Error: list is empty - cannot access item 0

JAbusaid

I have the following structure:

struct collector_txn_s like any_sequence_item {
    kind : trans_kind_t;
    keep soft kind == GENERIC;
    %data    : list of byte;
........................
};

When I do the following:

    private send_odt()is {

      transfer = new GENERIC collector_txn_s with{
       for each (d) using index (byte_idx) in smp.D_sig_l {
        it.data[byte_idx] = d.get();
       };

I get the  Error: list is empty - cannot access item 0 error.

 

Any ideas why this might be happening?

  • Have you tried stepping through the code in the debugger, to see which line triggers the error?

    You might need to set the list size, because you're using a "new" action here, not a "gen" action. Whilst "gen" will allocate randomly all the lists, I believe "new" will not allocate anything that you have not explicitly asked it to do. In effect the code in the "with" block is just the same as putting it all as procedural code, thus:

    transfer = new GENERIC collector_txn_s;
    for each (d) using index ... { ... };

     

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.