Re: [ns] [bug] Segmentation violation

[Di-Fa Chang <difac@usc.edu>]

I run the two examples (wireless2.tcl and wireless3.tcl) with
ns-2-snapshot-20011119 and nam-1-snapshot-20011119 on RedHat 7.0
(kernel 2.4.2-2) but don't encounter the segmentation fault.
So, you may want to upgrade your ns and nam to the latest release.

- difa

On Mon, 19 Nov 2001, Ra�l Gil wrote:

> [Bug Report]
>
> -----------------------------
> Category:  Other
> Package:   ns 2.1b6
> OS:        linux suse 7.0
> Environment Variables:
> LD_LIBRARY_PATH=
> TCL_LIBRARY=
> TK_LIBRARY=
>
>
> -----------------------------
> Description:
>
> Description of Problem:
>
> When I open wireless2-out.nam and wireless3-out.nam (results of simulating wireless2.tcl and wireless3.tcl from Marc Greis's tutorial) with nam, it provokes segmentation violation.
>
> How Easily Reproducible:
> (e.g. every time, intermittent, once only, etc.)
>
> every time
>
> Steps to Reproduce:
> (describe the minimal set of steps necessary to trigger the bug)
> 1. download wireless2.tcl or wireless3.tcl from Marc Greis's tutorial
> 2. 'ns wireless2.tcl' or 'ns wireless3.tcl'
> 3. 'nam wireless2-out.nam' or 'ns wireless3-out.nam'
>
>
> Actual Results:
> (describe what the application did after performing the above steps)
>
> It shows message: segmentation violation
>
> Expected Results:
> (describe what the application should have done, were the bug not present)
>
> The nam should have opened for showing the simulation result.
>
> Additional Information:
> (e.g. URLs to your script, detailed output files, packet trace, etc. if they are big files.)
>
> I think '$ns_ initial_node_pos $node_($i) 20' is the line that provokes this situation. If I delete this line and change '$ns_ namtrace-all-wireless $namtrace $opt(x) $opt(y)' for '$ns_ namtrace-all $namtrace', the problem disappear but the show the fixes nodes only.
>