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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: module_traverse segfault
Date: Mon, 16 Jun 2014 15:01:46 -0400
References: <539F2603.2020904@rptd.ch>
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Xref: csiph.com comp.lang.python:73323

On 6/16/2014 1:14 PM, Roland Pl=C3=BCss wrote:
> I'm still trying to get Python3 embedded working. The main problem I'm
> hitting now is an unexplainable segfault:

/unexplainable/unexplained/ ;-)

> Program received signal SIGSEGV, Segmentation fault.
> 0x00007fffffffc958 in ?? ()
> (gdb) bt
> #0  0x00007fffffffc958 in ?? ()
> #1  0x00007fffdd2f9ed0 in module_traverse () from
> /usr/lib64/libpython3.3.so.1.0
> #2  0x00007fffdd396cc7 in collect_with_callback () from
> /usr/lib64/libpython3.3.so.1.0
> #3  0x00007fffdd397738 in PyGC_Collect () from
> /usr/lib64/libpython3.3.so.1.0
> #4  0x00007fffdd3808ca in Py_Finalize () from /usr/lib64/libpython3.3.s=
o.1.0

Can you run (some of) the same code in a normal interpreter?  If so,=20
does it raise an uncaught exception?

Was the program supposed to be shutting down when this occurred? Or did=20
this happen during 'normal' execution?

In any case, switch to 3.4.1 or later for improved gc and finalization.

--=20
Terry Jan Reedy