# Gnuradio companion bug

**URL:** <https://www.ruby-forum.com/t/gnuradio-companion-bug/231900>\
**Category:** GNU Radio\
**Created:** [September 4, 2014, 9:22pm UTC](https://www.ruby-forum.com/t/gnuradio-companion-bug/231900 "2014-09-04T21:22:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [September 4, 2014, 9:22pm UTC](https://www.ruby-forum.com/t/gnuradio-companion-bug/231900/1 "2014-09-04T21:22:00Z")

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Hi guys,  
everyone has same issue:

Created default thread pool with 8 threads.

> > > gr\_fir\_fff: using SSE  
> > > swig/python detected a memory leak of type ‘gr::basic\_block\_sptr \*’, no  
> > > destructor found.  
> > > Traceback (most recent call last):  
> > > File “/home/aero/top\_block.py”, line 77, in   
> > > tb = top\_block()  
> > > File “/home/aero/top\_block.py”, line 63, in **init**  
> > > self.connect((self.digital\_gmsk\_mod\_0, 0), (self.osmosdr\_sink\_0, 0))  
> > > File “/usr/local/lib/python2.7/dist-packages/gras/GRAS\_PyHierBlocks.py”,  
> > > line 171, in connect  
> > > return internal\_connect\_\_(TopBlockPython.connect, self, \*args)  
> > > File “/usr/local/lib/python2.7/dist-packages/gras/GRAS\_PyHierBlocks.py”,  
> > > line 162, in internal\_connect\_\_  
> > > sink = to\_element(sink)  
> > > File “/usr/local/lib/python2.7/dist-packages/gras/GRAS\_PyHierBlocks.py”,  
> > > line 145, in to\_element  
> > > except: raise Exception(‘cant coerce obj %s to element’%(obj))  
> > > Exception: cant coerce obj \<gr\_block sink\_impl (0)\> to element

?

Very simple flow graph File Source -\> Packet Encoder -\> GMSK mod -\>  
osmocom sink (bladerf)

(grc attached)

Yury