#715: Parents probably not reclaimed due to too much caching
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       Reporter:  robertwb                          |         Owner:  somebody  
                               
           Type:  defect                            |        Status:  closed    
                               
       Priority:  major                             |     Milestone:  sage-5.5  
                               
      Component:  coercion                          |    Resolution:  fixed     
                               
       Keywords:  weak cache coercion Cernay2012    |   Work issues:            
                               
Report Upstream:  N/A                               |     Reviewers:  
Jean-Pierre Flori, Simon King, Nils Bruin
        Authors:  Simon King, Jean-Pierre Flori     |     Merged in:  
sage-5.5.beta0                           
   Dependencies:  #13145, to be merged with #11521  |      Stopgaps:            
                               
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Comment (by jpflori):

 Ok, I can reproduce a segfault on a x86_64 system when running
 ell_number_field.py tests under gdb.
 The end of the backtrace is similar to what mjo posted.
 The beginning involves twisted, so it feels like the segfault happens when
 Sage quits, somewhere in quit_sage.
 This might be
 
http://trac.sagemath.org/sage_trac/attachment/ticket/12215/trac12215_segfault_fixes.patch
 as the backtrace suggests, and removing the offending PARI deallocation
 suggests as well.

 I'll retry with the patch linked above and the other fix from #12313 for
 polybori.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:334>
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