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Re: [Discuss-gnuradio] issue with GRC on ubuntu 12.10 - Segmentation Fau


From: Arturo Rinaldi
Subject: Re: [Discuss-gnuradio] issue with GRC on ubuntu 12.10 - Segmentation Fault when launching the tool
Date: Fri, 19 Oct 2012 16:00:14 +0200
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:16.0) Gecko/20121010 Thunderbird/16.0.1

Nella citazione in data Fri Oct 19 03:47:41 2012, Josh Blum ha scritto:


On 10/18/2012 05:49 PM, Arturo Rinaldi wrote:
After successfully building gnuradio 3.6.2 on *ubuntu quantal quetzal
12.10* i get this error when launching gnuradio-companion :
/*
*//address@hidden:/usr/local/bin$ gnuradio-companion */
/*Traceback (most recent call last):*//*
*//*  File "/usr/local/bin/gnuradio-companion", line 58, in <module>*//*
*//*    from gnuradio.grc.python.Platform import Platform*//*
*//*  File
"/usr/local/lib/python2.7/dist-packages/gnuradio/grc/python/Platform.py", line
22, in <module>*//*
*//*    from .. base.Platform import Platform as _Platform*//*
*//*  File
"/usr/local/lib/python2.7/dist-packages/gnuradio/grc/base/Platform.py",
line 22, in <module>*//*
*//*    from .. base import ParseXML, odict*//*
*//*  File
"/usr/local/lib/python2.7/dist-packages/gnuradio/grc/base/ParseXML.py",
line 20, in <module>*//*
*//*    from lxml import etree*//*
*//*  File "lxml.etree.pyx", line 67, in init lxml.etree
(src/lxml/lxml.etree.c:160085)*//*
*//*  File "/usr/lib/python2.7/io.py", line 51, in <module>*//*
*//*    import _io*//*
*//*TypeError: type '_io._IOBase' participates in gc and is a base type
but has inappropriate tp_free slot*//*
*//*Segmentation Fault (core dump created)


The error seems to be entirely from lxml. So I would guess that this is
an lxml issue not gnuradio related. Can you try to run python -c "from
lxml import etree" and see if the error happens?

-josh

*/I satisfied all the required dependencies with the build-gnuradio
script by SBRAC. Any ideas to solve this issue, it never happened to me
in any build of GNURadio from stable tarball. Do I have to install some
other python package ?

Thank you in advance

Kind Regards

               Arturo



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the python importing process (python -c "from lxml import etree") exits without any error. I decided to switch to the 3.6.1 version from quantal repos until the problem is solved. I tried to install different versions of lxml from pipy but without any success.

Regards, Arturo



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