Re: [Discuss-gnuradio] problem with ofdm link

Hi alphonso,

i would realy do that but i have absolutely no idea how.

is there any assistance?

GNU Radio loves bugfixes: So sure, there is assistance :)

Have you been able to follow Martin's debugging leads? And can you modify the C++ source in order to execute the copying loop if (and only if) d_pilot_carriers.size() is not 0?

Best regards,
Marcus

On 19.07.2015 20:14, BHN66@web.de wrote:

hi martin,

i'm sorry for the late response but i had to work on an other project with a higher priority.

now i will pursue the problem with the carriers. you wrote

 

>>Do you want to submit a fix?

 

to me. i would realy do that but i have absolutely no idea how.

is there any assistance?

 

 

alphonso

 

Gesendet: Freitag, 19. Juni 2015 um 18:27 Uhr
Von: "Martin Braun" <martin.braun@ettus.com>
An: BHN66@web.de, discuss-gnuradio@gnu.org
Betreff: Re: [Discuss-gnuradio] problem with ofdm link

Alphonso,

looks like you've found a bug! Here's how I debugged this (it's a good
and easy learning example):

- Build GNU Radio w/ debug symbols
- On my system, I need to allow core dumps: Run `ulimit -c unlimited`
- Then run the app, it'll produce a file called `core`
- Open that with gdb: gdb /usr/bin/python core
- In the gdb command line, run `bt`

It'll show you it crashed on line 186. As you can see, the code makes
the assumption that d_pilot_carriers is populated, which it isn't --
there's your bug!

Do you want to submit a fix?

M

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