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Random crash with Singular #39292

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user202729 opened this issue Jan 6, 2025 · 1 comment
Closed

Random crash with Singular #39292

user202729 opened this issue Jan 6, 2025 · 1 comment
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@user202729
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user202729 commented Jan 6, 2025

Steps To Reproduce

E = EllipticCurve([4, -20])
F = E.change_ring(QQbar)
S = F(0).division_points(3)
M = number_field_elements_from_algebraics([a.x() for a in S if a], minimal=True, embedded=True)[0] # degree 24
[E.defining_polynomial()(x=a.x(), z=1).change_ring(M) for a in S if a]

Crash in naSetMap

Cython backtrace
----------------
#0  0x0000743f7eb25a70 in wait4 ()
#1  0x0000743f7e0e3270 in print_enhanced_backtrace ()
#2  0x0000743f7e0e39e0 in sigdie ()
#3  0x0000743f7e0e5d90 in cysigs_signal_handler ()
#4  0x0000000000000000 in ?? ()
#5  0x0000000000000000 in naSetMap(n_Procs_s*, n_Procs_s*) ()
#6  0x0000000000000000 in __pyx_f_4sage_4libs_8singular_8singular_sa2si_NF(_object*, ip_sring*) ()
#7  0x0000000000000000 in __pyx_pf_4sage_5rings_10polynomial_28multi_polynomial_libsingular_27MPolynomialRing_libsingular_12_element_constructor_(__pyx_obj_4sage_5rings_10polynomial_28multi_polynomial_libsingular_MPolynomialRing_libsingular*, _object*, _object*) ()
#8  0x00005ff36f2ea770 in cfunction_vectorcall_FASTCALL_KEYWORDS () at /usr/local/src/conda/python-3.11.10/Include/cpython/methodobject.h:52

( sa2si_NF )

@user202729
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duplicate of #36101

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