[Python-Dev] Newly Built Python3 Binary Throws Segfault

[Guido van Rossum]

What I see in the strace:

... load libpython3.4m.so.1.0
... load libm
... open /dev/__properties__ and do something to it (what?)
... get current time
... allocate memory
... getuid
... segfault

That's not a lot to go on, but it doesn't look as if it has started to load
modules yet.

Does /dev/__properties__ ring a bell? Not to me.

That stack trace would be really helpful.

On Wed, Jan 28, 2015 at 8:34 AM, Cyd Haselton <chaselton at gmail.com> wrote:

> Apologies...I'm not sure what a stack track is, but I do have the
> strace.  Nearest I can tell, it happens due to an open call, though I
> am probably wrong.
> Attaching the strace output to this email.  I'm going to head back to
> the documentation and to back out of some Android-related changes in
> _localemodule.c
>
> On Wed, Jan 28, 2015 at 9:43 AM, Guido van Rossum <guido at python.org>
> wrote:
> > There could be a million differences relevant (unicode, ints, ...).
> Perhaps
> > the importlib bootstrap is failing. Perhaps the dynamic loading code
> > changed. Did you get a stack track? (IIRC strace shows a syscall trace --
> > also useful, but doesn't tell you precisely how it segfaulted.)
> >
> > On Wed, Jan 28, 2015 at 6:43 AM, Cyd Haselton <chaselton at gmail.com>
> wrote:
> >>
> >> All,
> >> I recently ditched my attempts to port Python 2.7.8 to Android in
> >> favor of Python 3.4.2.  Unfortunately, after using the same configure
> >> options in the same environment, and modifying the setup.py as needed,
> >> the newly built binary throws a segfault when the generate-posix-vars
> >> portion of the build is reached...and when it is run as well (i.e.
> >> ./python --help, ./python -E -S -m sysconfig, or similar)
> >>
> >> I took a strace of ./python, however I'm a bit lost when reviewing it.
> >> Any ideas as to what may be going on...i.e. why Python 2.7 works but
> >> 3.x throws a segfault?
> >>
> >> Thanks in advance,
> >> Cyd
> >> _______________________________________________
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> >
> >
> >
> >
> > --
> > --Guido van Rossum (python.org/~guido)
>



-- 
--Guido van Rossum (python.org/~guido)
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