Test hang with symbolic 2.7.1

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Test hang with symbolic 2.7.1

Orion Poplawski-2
 From https://savannah.gnu.org/bugs/?56234

Trying to build octave-symbolic 2.7.1 or latest git on Fedora 30+ the
following test hangs:

/home/orion/rpmbuild/BUILDROOT/octave-symbolic-2.7.1-5.fc31.x86_64/usr/share/octave/packages/symbolic-2.7.1/@sym/zeta.m
Fatal Python error: Cannot recover from stack overflow.

Current thread 0x00007fad71c4f680 (most recent call first):
File "/usr/lib/python3.7/site-packages/sympy/core/sympify.py", line 293
in sympify
File "/usr/lib/python3.7/site-packages/sympy/core/containers.py", line
51 in <genexpr>
File "/usr/lib/python3.7/site-packages/sympy/core/containers.py", line
52 in _new_
File "/usr/lib/python3.7/site-packages/sympy/core/containers.py", line
146 in <lambda>
File "/usr/lib/python3.7/site-packages/sympy/core/sympify.py", line 293
in sympify
File "/usr/lib/python3.7/site-packages/sympy/core/containers.py", line
51 in <genexpr>
File "/usr/lib/python3.7/site-packages/sympy/core/containers.py", line
52 in _new_
File "/usr/lib/python3.7/site-packages/sympy/core/containers.py", line
146 in <lambda>
File "/usr/lib/python3.7/site-packages/sympy/core/sympify.py", line 293
in sympify
File "/usr/lib/python3.7/site-packages/sympy/core/function.py", line
1218 in _new_
File "/usr/lib/python3.7/site-packages/sympy/core/function.py", line
1556 in _eval_derivative
File "/usr/lib/python3.7/site-packages/sympy/core/basic.py", line 1663
in _visit_eval_derivative_scalar
File "/usr/lib/python3.7/site-packages/sympy/core/basic.py", line 1658
in _accept_eval_derivative
File "/usr/lib/python3.7/site-packages/sympy/core/basic.py", line 1682
in _eval_derivative_n_times
File "/usr/lib/python3.7/site-packages/sympy/core/function.py", line
1392 in _new_
File "/usr/lib/python3.7/site-packages/sympy/core/expr.py", line 3095 in
diff
File "/usr/lib/python3.7/site-packages/sympy/core/function.py", line
2115 in doit
File "/usr/lib/python3.7/site-packages/sympy/core/function.py", line
2136 in evalf
File "/usr/lib/python3.7/site-packages/sympy/core/function.py", line
2136 in evalf
File "/usr/lib/python3.7/site-packages/sympy/core/function.py", line
2136 in evalf
File "/usr/lib/python3.7/site-packages/sympy/core/function.py", line
2136 in evalf
File "/usr/lib/python3.7/site-packages/sympy/core/function.py",
...
Waiting..............................................

This is with:
python3-3.7.3-2.fc31.x86_64
python3-sympy-1.4-1.fc31.noarch
octave-4.4.1-7.fc31.x86_64

Not sure where this is failing or how to further debug it.

--
Orion Poplawski
Manager of NWRA Technical Systems          720-772-5637
NWRA, Boulder/CoRA Office             FAX: 303-415-9702
3380 Mitchell Lane                       [hidden email]
Boulder, CO 80301                 https://www.nwra.com/


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Re: Test hang with symbolic 2.7.1

Colin Macdonald-2
On 2019-04-29 10:31 a.m., Orion Poplawski wrote:
>  From https://savannah.gnu.org/bugs/?56234
>
> Trying to build octave-symbolic 2.7.1 or latest git on Fedora 30+ the
> following test hangs:
>
> /home/orion/rpmbuild/BUILDROOT/octave-symbolic-2.7.1-5.fc31.x86_64/usr/share/octave/packages/symbolic-2.7.1/@sym/zeta.m
> Fatal Python error: Cannot recover from stack overflow.

Thanks Orion, I haven't seen this but I will try to debug it.

Colin