#13636: %timeit unpickle_all() causes a SEGABRT
---------------------------------+------------------------------------------
Reporter: andrew.mathas | Owner: was
Type: defect | Status: new
Priority: major | Milestone: sage-5.5
Component: pickling | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by nbruin):
Usually asking for the stack backtrace is one of the most interesting
things:
{{{
Program received signal SIGABRT, Aborted.
0x00000031cfe36285 in raise () from /lib64/libc.so.6
...
(gdb) bt
#0 0x00000031cfe36285 in raise () from /lib64/libc.so.6
#1 0x00000031cfe37b9b in abort () from /lib64/libc.so.6
#2 0x00007fffed336797 in global_NTL_error_callback () from
/usr/local/sage/5.0/local/lib/libcsage.so
#3 0x00007fffece36eaf in NTL::Error (s=0x7fffece6b6b2 "InvMod: inverse
undefined") at tools.c:48
#4 0x00007fffecd8b5c6 in NTL::InvMod (a=<optimized out>, n=244) at
ZZ.c:351
#5 0x00007fffecdfb18c in inv (a=<optimized out>, x=<synthetic pointer>)
at ../include/NTL/lzz_p.h:278
#6 NTL::PlainRem (r=..., a=..., b=<optimized out>) at lzz_pX.c:1083
#7 0x00007fffece054c1 in NTL::GCD (d=..., u=<optimized out>, v=...) at
lzz_pX1.c:558
#8 0x00007fffd99939a8 in GCD (b=..., a=...) at
/usr/local/sage/5.0/local/include/NTL/lzz_pX.h:696
#9 gcd_univar_ntlp (G=..., F=...) at cf_gcd.cc:1036
#10 gcd_poly_p (f=<optimized out>, g=...) at cf_gcd.cc:546
#11 0x00007fffd998f272 in gcd_poly (f=..., g=...) at cf_gcd.cc:718
#12 0x00007fffd998f954 in gcd (f=..., g=...) at cf_gcd.cc:952
#13 0x00007fffd998fdaf in cf_content (f=..., g=...) at cf_gcd.cc:798
#14 0x00007fffd998ff58 in content (f=..., x=...) at cf_gcd.cc:851
#15 0x00007fffd998feed in content (f=..., x=...) at cf_gcd.cc:855
#16 0x00007fffd99b5966 in EZGCD_P (FF=<optimized out>, GG=<optimized out>)
at cf_gcd_smallp.cc:4168
#17 0x00007fffd998f0fe in gcd_poly (f=..., g=...) at cf_gcd.cc:704
#18 0x00007fffd998e0ce in chinrem_gcd (FF=<optimized out>, GG=<optimized
out>) at cf_gcd.cc:1195
#19 0x00007fffd998f156 in gcd_poly (f=..., g=...) at cf_gcd.cc:743
#20 0x00007fffd998f954 in gcd (f=..., g=...) at cf_gcd.cc:952
#21 0x00007fffd97f7a76 in singclap_gcd_r (f=0x7fffd966a328,
g=0x7fffd966a1e8, r=0x7fffd96371a0) at clapsing.cc:53
#22 0x00007fffd97f7c59 in singclap_gcd (f=0x7fffd966a328,
g=0x7fffd966a1e8) at clapsing.cc:109
#23 0x00007fffd9d939df in
__pyx_pf_4sage_5rings_10polynomial_28multi_polynomial_libsingular_23MPolynomial_libsingular_52gcd
(__pyx_v_self=0x5568500, __pyx_args=<optimized out>, __pyx_kwds=<optimized
out>)
at sage/rings/polynomial/multi_polynomial_libsingular.cpp:26669
#24 0x00007ffff7c711d3 in PyObject_Call (func=0x53a35f0, arg=<optimized
out>, kw=<optimized out>)
at Objects/abstract.c:2529
#25 0x00007ffff7d0e677 in PyEval_CallObjectWithKeywords (func=0x53a35f0,
arg=0x54b8210, kw=<optimized out>)
at Python/ceval.c:3882
#26 0x00007ffff7c87cec in methoddescr_call (descr=<optimized out>,
args=0x54b8210, kwds=0x5554ab0)
at Objects/descrobject.c:247
#27 0x00007ffff7c711d3 in PyObject_Call (func=0x1471f38, arg=<optimized
out>, kw=<optimized out>)
at Objects/abstract.c:2529
#28 0x00007ffff7d0e677 in PyEval_CallObjectWithKeywords (func=0x1471f38,
arg=0x54cbdd0, kw=<optimized out>)
at Python/ceval.c:3882
#29 0x00007fffe9f911c2 in
__pyx_pf_4sage_9structure_7element_16NamedBinopMethod_1__call__
(__pyx_v_self=0x54dabd8,
...
#91 0x00007ffff7d15bd5 in PyEval_EvalCodeEx (co=<optimized out>,
globals=<optimized out>, locals=<optimized out>,
args=<optimized out>, argcount=1, kws=0x6f32e0, kwcount=2,
defs=0x7fffee2bf068, defcount=2, closure=0x0)
at Python/ceval.c:3253
#92 0x00007ffff7d13e51 in fast_function (nk=<optimized out>, na=1,
n=<optimized out>, pp_stack=0x7fffffffd640,
func=0x7fffed7add70) at Python/ceval.c:4109
#93 call_function (oparg=<optimized out>, pp_stack=0x7fffffffd640) at
Python/ceval.c:4034
}}}
So, the error happens in NTL. I suppose that this is an error that
normally gets caught appropriately but due to `%timeit` doesn't? The
alternative is that the whole `%timeit` thing happens to cause a state in
NTL we aren't normally encountering.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13636#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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