given libpthread being involved, I guess it might have to do with GIL vs
NOGIL stuff...
On Thursday, May 11, 2017 at 10:50:39 AM UTC+1, vdelecroix wrote:
>
> Dear all,
>
> While working on [1] I stumbled on a strange segfault. Namely, with the
> branch applied I got
>
> {{{
> sage: a = matrix(QQ, 1)
> sage: a.randomize()
> sage: quit
> Exiting Sage (CPU time 0m1.48s, Wall time 0m5.80s).
> ------------------------------------------------------------------------
> .../cysignals/signals.so
> .../cysignals/signals.so
> .../cysignals/signals.so
> .../libpthread.so.0
> .../libpython2.7.so.1.0
> .../sage/misc/randstate.so
> <snip>
> ------------------------------------------------------------------------
> Unhandled SIGSEGV: A segmentation fault occurred.
> ------------------------------------------------------------------------
> }}}
>
> I indeed modified the randomization method to use flint random
> generators, you can have a look at commits [2] and [3]. But I don't
> understand at all where the error might come from.
>
> Any help would be more than welcome!
>
> [1] https://trac.sagemath.org/ticket/22970
> [2]
>
> https://git.sagemath.org/sage.git/commit?id=b52e2c347a28b301485c6cc5bb221873ca5ac636
>
> [3]
>
> https://git.sagemath.org/sage.git/commit?id=d5ea72b364534c3ce4374c6d78b54852c8333cc3
>
>
> Best,
> Vincent
>
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