#12480: NTL segfault on OS X 10.7
--------------------------+-------------------------------------------------
Reporter: jdemeyer | Owner: was
Type: defect | Status: new
Priority: critical | Milestone: sage-5.0
Component: interfaces | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
--------------------------+-------------------------------------------------
On OS X 10.7 (compiled with gcc-4.6.2, #12369), executing the following
code:
{{{
R = Zp(5,5)
S.<x> = R[]
f = x^5 + 75*x^3 - 15*x^2 +125*x - 5
W.<w> = R.ext(f)
pol = ntl.ZZ_pX([5^40,5^42,3*5^41], 5^44)
W(pol, relprec = 0)
}}}
crashes Sage:
{{{
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000300000002
0x0000000101791ae1 in NTL::CopyPointer ()
(gdb) bt
#0 0x0000000101791ae1 in NTL::CopyPointer ()
#1 0x0000000101791d46 in NTL::ZZ_pContext::restore ()
#2 0x000000010164e1aa in ZZ_pX_conv_modulus ()
#3 0x00000001063a1ff7 in
__pyx_f_4sage_5rings_6padics_16pow_computer_ext_ZZ_pX_eis_shift_p
(__pyx_v_self=0x10db203f0, __pyx_v_x=0x10e057f18, __pyx_v_a=0x10e057f18,
__pyx_v_n=200, __pyx_v_finalprec=0) at pow_computer_ext.cpp:6173
#4 0x0000000106392871 in
__pyx_f_4sage_5rings_6padics_16pow_computer_ext_27PowComputer_ZZ_pX_small_Eis_eis_shift
(__pyx_v_self=0x10db203f0, __pyx_v_x=0x10e057f18, __pyx_v_a=0x10e057f18,
__pyx_v_n=200, __pyx_v_finalprec=0) at pow_computer_ext.cpp:12917
#5 0x000000010638aced in
__pyx_f_4sage_5rings_6padics_16pow_computer_ext_17PowComputer_ZZ_pX_eis_shift_capdiv
(__pyx_v_self=0x10db203f0, __pyx_v_x=0x10e057f18, __pyx_v_a=0x10e057f18,
__pyx_v_n=200, __pyx_v_finalprec=0) at pow_computer_ext.cpp:9448
#6 0x00000001064e0aba in
__pyx_f_4sage_5rings_6padics_22padic_ZZ_pX_CR_element_18pAdicZZpXCRElement__internal_lshift
(__pyx_v_self=0x10e057ef0, __pyx_v_shift=-200) at
padic_ZZ_pX_CR_element.cpp:9197
#7 0x00000001064dfd8b in
__pyx_f_4sage_5rings_6padics_22padic_ZZ_pX_CR_element_18pAdicZZpXCRElement__set_from_ZZ_pX_part2
(__pyx_v_self=0x10e057ef0, __pyx_v_poly=0x10e075f98) at
padic_ZZ_pX_CR_element.cpp:8445
#8 0x00000001064de4c7 in
__pyx_f_4sage_5rings_6padics_22padic_ZZ_pX_CR_element_18pAdicZZpXCRElement__set_from_ZZ_pX_rel
(__pyx_v_self=0x10e057ef0, __pyx_v_poly=0x10e075f98,
__pyx_v_ctx=0x10e078730, __pyx_v_relprec=0) at
padic_ZZ_pX_CR_element.cpp:8146
#9 0x00000001064fe4ee in
__pyx_pf_4sage_5rings_6padics_22padic_ZZ_pX_CR_element_18pAdicZZpXCRElement___init__
(__pyx_v_self=0x10e057ef0, __pyx_args=0x10db23d40, __pyx_kwds=0x10da8f290)
at padic_ZZ_pX_CR_element.cpp:5163
#10 0x000000010007a1a7 in type_call ()
Previous frame inner to this frame (gdb could not unwind past this frame)
(gdb)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12480>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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