Re: [Discuss-gnuradio] segfault

[michele]

Il Sun, 30 Nov 2014 21:16:12 +0100, Marcus Müller ha scritto:

> Hi Michele,
> 
> if you built GNU Radio/gqrx with gcc, then the GNU Debugger might be of
> immensive help.
> First make sure you've built GNU Radio with debugging symbols ("cmake
> -DCMAKE_BUILD_TYPE=RelWithDebInfo  [...]"), then start gqrx in the
> debugger:
> 
> ?> gdb $(which gqrx)
> [lots of text from gdb]
> (gdb) run [<enter>]
> 
> should start gqrx and run until it segfaults. then use the backtrace
> command in gdb:
> 
> (gdb) bt [<enter>]
> 
> which should show you in which function call hierarchy the fault
> occurred.
> 
> Greetings,
> Marcus
> 
> PS: don't worry about your English, it's quite fine :)
> On 11/29/2014 07:30 PM, michele wrote:
>> Hi to all.
>> This is my first post here...i hope to have choosen the right place to
>> ask....
>>
>> I'm currently trying to compile gqrx and gnuradio...everything went
>> well, but when i run gqrx it won't start and give me this error:
>>
>> gqrx[5865]: segfault at 12d0 ip 00007f570ee76d2f sp 00007fff60fd9000
>> error 4 in libgnuradio-pmt-3.7.6git.so.0.0.0[7f570ee44000+50000]
>>
>> I've asked on the gqrx group and the author (hi csete!!!) told me that
>> most probably it's a bug/problem on gnuradio.
>>
>> I've no idea what's wrong...
>>
>>
>> PS: it was running ok before i updated with git pull gnuradio (didn't
>> do that since 2 months...).
>>
>> PSS: Sorry for my english!!!!
>>
>>
>> _______________________________________________
>> Discuss-gnuradio mailing list address@hidden
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

the project uses qmake instead of cmake....but i've tryed anyway...
i get this from dbg:

Starting program: /home/michele/Scrivania/gqrx.git/build/gqrx 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6001d2f in pmt::string_to_symbol(std::string const&) () from /
usr/local/lib/libgnuradio-pmt-3.7.6git.so.0.0.0
(gdb) bt
#0  0x00007ffff6001d2f in pmt::string_to_symbol(std::string const&) () 
from /usr/local/lib/libgnuradio-pmt-3.7.6git.so.0.0.0
#1  0x00007ffff6002079 in pmt::intern(std::string const&) () from /usr/
local/lib/libgnuradio-pmt-3.7.6git.so.0.0.0
#2  0x00007fffee193a0d in ?? () from /usr/lib/x86_64-linux-gnu/libgnuradio-
blocks.so.3.7.3
#3  0x00007ffff7dea13a in call_init (l=<optimized out>, address@hidden, 
address@hidden, address@hidden) at dl-
init.c:78
#4  0x00007ffff7dea223 in call_init (env=<optimized out>, argv=<optimized 
out>, argc=<optimized out>, l=<optimized out>) at dl-init.c:36
#5  _dl_init (main_map=0x7ffff7ffe1c8, argc=1, argv=0x7fffffffe078, 
env=0x7fffffffe088) at dl-init.c:126
#6  0x00007ffff7ddb24a in _dl_start_user () from /lib64/ld-linux-
x86-64.so.2
#7  0x0000000000000001 in ?? ()
#8  0x00007fffffffe38c in ?? ()
#9  0x0000000000000000 in ?? ()

Is this what you meant?