[ns] [bug] Segmentation violation

[Raúl Gil <raul.gil@upcnet.es>]

[Bug Report]

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Category:  Other
Package:   ns 2.1b6
OS:        linux suse 7.0
Environment Variables:
LD_LIBRARY_PATH=
TCL_LIBRARY=
TK_LIBRARY=


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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.