Stack traces arising in pcode do not include line numbers

Consider the following code:

% doThings.m
i = 1;
j = 2;
k = 3;
l = seven; %seven is deliberately undefined

I pcode compile doThings.m to give me the following:

doThings.p

If I now run doThings in Matlab 2018a, I see this:

>> doThings
Undefined function or variable 'seven'.

Error in doThings

The same code, when run in Matlab 2013a gives me this:

>> doThings
Undefined function or variable 'seven'.

Error in
/home/rk/doThings.p>doThings
(line 4)

Notice that I get a line number in the stack trace from 2013a, but no line numbers from the stack trace in 2018a.

• Why are line numbers no longer visible in error traces of pcode-compiled matlab?
• Is there a configuration option to switch line numbering on for pcode-compiled matlab?
• If so, how can I set this option, assuming a headless installation?

Answer 1

[Hari Krishna Ravuri]

I understand that, line numbers are not being displayed in pcode error traces in your MATLAB 2018a.Please update your MATLAB to MATLAB 2019a.

[Rakesh Karia]

Are you able to link to any release notes / commentary from Mathworks that makes the removal and re-add explicit?

I can't see anything in the release notes or 2019a bugfix reports that point to this.

Answer 2

[Shivam Sardana]

The issue with pcode has been brought to the notice of developers. They will investigate the matter further.