SIGSEGV error....help me please :(

[Giuseppe Ferrante]

i got this error:

Waf: Entering directory `/home/giuseppe/workspace/ns-3-lte-SpectrumSharing/build'

Waf: Leaving directory `/home/giuseppe/workspace/ns-3-lte-SpectrumSharing/build'

'build' finished successfully (0.497s)

Starting simulation.....

Command ['/home/giuseppe/workspace/ns-3-lte-SpectrumSharing/build/debug/scratch/multi_op', '1', '2', '40', '20', '20', '111'] terminated with signal SIGSEGV. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>").

searching from the web i also did this command to create a link between che library

/workspace/ns-3-lte-SpectrumSharing/build/debug$ sudo ln -s libns3.so /lib/libns3.so

but it doesn't work anyway!!

could someone help me!!

[Hanene GABTENI]

Hi, then I have actually the same problem. this is a segmentation error. that means: you point to an adress and you find nothing. then when debugging(in my case) I found "null pointer exception" . I try to make sure that all pointer and specially vectors variables are correctly instanciated.

I hope this will help.

2012/7/4 Giuseppe Ferrante <storx...@gmail.com>

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Hanene GABTENI

University of Haute Alsace
IUT - 34 rue du Grillenbreit 68008 Colmar - France
Email : gabteni.h...@gmail.com or hanene.gabteni@uha.fr
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tel: 07 86 33 93 39

[ahmed elawamry]

Dear all,

Please i want to assign asymmetry to the Wifi channel. Are there anyone can help me on doing this?

Best Regards,
Ahmed Elawamry

[OKONOR OBINNA]

Hi

In my own knowledge, this SIGSEGV means that there is an assignment that is wrong. i.e either that you created servers that are not connected properly to clients or that a particular node value was not properly assigned.  For this (./waf --run <program> --command-template="gdb --args %s <args>"), retype in your console changing <program> with your file name. You can then use gdb. I hope this will help you started.

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[Giuseppe Ferrante]

guys i can't solve my problem....can someone suggest me ....how set my debugger to understand where's the problem...?

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[Sara]

Hello,

I got this error message before and it means that there is a logical error like you have a 10 nodes and tray to send to node number 11 it will build the program but it gives a logical error, I think you can try to run a small pieces of the code if it is possible to find where the error is 

I hope this can give you better ides where to look

[Mitch Watrous]

Se this wiki that talks about finding segmentation faults in ns-3 using Insight:

    http://www.nsnam.org/wiki/index.php/HOWTO_understand_and_find_cause_of_terminated_with_signal_errors

Mitch

[crazy_bird]

aurora  is right. I had the same error several days ago because of "null pointer". So just debug in your code and take more attention to the pointers. You shall find out what's going wrong.

在 2012年7月4日星期三UTC+8下午7时29分11秒，Giuseppe Ferrante写道：