i have a new problem with ns2

edison_0927 · 05-29-2012, 11:11 PM

i got the error below when i using the ns2 to scenario my protocol

Starting program: /usr/local/bin/ns sim.tcl
num_nodes is set 25
INITIALIZE THE LIST xListHead
Loading scenario file...

Program received signal SIGSEGV, Segmentation fault.
0x0829c00b in MobileNode::update_position() ()

who can help to fix it ,thank you !!!!!!!

jhwilliams · 05-30-2012, 01:56 AM

Looks like the NS guys f*d up; segfaults aren't supposed to happen in good releases. You should report it as a bug.

But, to answer your question, try one of these:

Code:

strace /usr/local/bin/ns sim.tcl

Code:

gdb --args /usr/local/bin/ns sim.tcl
# type run, then bt

Code:

valgrind /usr/local/bin/ns sim.tcl

Then use your Googling skills to figure out what's wrong, based on the information those things return.

Also, double check your input file. You might be passing a bad value to update_position().

edison_0927 · 05-30-2012, 08:07 AM

i have fixed the problem already ..
thank you very much

unSpawn · 06-01-2012, 12:14 PM

Quote:

Originally Posted by edison_0927

i have fixed the problem already ..

Then list your fix for others please.