Ok, just did it. I'm not sure who to CC on this. Best
Viviane 2015-04-15 14:12 GMT-04:00 Viviane Pons <[email protected]>: > I'll do it, but I was hopping to get more context about it, also checking > if it wasn't known somewhere. > > 2015-04-15 14:09 GMT-04:00 Vincent Delecroix <[email protected]>: > > Do you know how to open a ticket? >> >> >> On 15/04/15 20:08, Viviane Pons wrote: >> >>> More context about this: >>> >>> I'm here with Buck at PyCon and he said he actually had this line >>> running a >>> few years ago. I don't know anything about this stuff so it's difficult >>> to >>> track what's wrong now. >>> >>> But it's really bad, as you can see, it's not just a usual exception, >>> it's >>> actually crashing Sage... >>> >>> (also, this is on Sage 6.6 and I believe it was there before. Buck had >>> the >>> error on the previous version and updated it to see if was fixed on 6.6) >>> >>> Best >>> >>> Viviane >>> >>> 2015-04-15 14:04 GMT-04:00 Vincent Delecroix <[email protected] >>> >: >>> >>> Already the following fails >>>> >>>> sage: integrated = -(gamma(1/2*k, 1/2*R*k) - gamma(1/2*k))/gamma(1/2*k) >>>> sage: plot(integrated.subs(k=41), (R,0,6)) >>>> /home/vincent/bin/sage: line 134: 13683 Segmentation fault >>>> "$SAGE_ROOT/src/bin/sage" "$@" >>>> >>>> >>>> >>>> On 15/04/15 18:55, Buck Evan wrote: >>>> >>>> I'm trying to plot a function involving the gamma function. It's this >>>>> one: >>>>> >>>>> -(gamma(1/2*k, 1/2*R*k) - gamma(1/2*k))/gamma(1/2*k) >>>>> >>>>> >>>>> >>>>> If I try to plot the function with a k value any greater than 40, I >>>>> get a >>>>> segfault: >>>>> >>>>> >>>>> sum( >>>>> plot( >>>>> integrated(k=k), >>>>> (x, 0, 2.5), >>>>> ymax=1.6, >>>>> color=color, >>>>> legend_label='k=%i' % k, >>>>> figsize=6, >>>>> aspect_ratio=1.0, >>>>> ) >>>>> for k, color in zip( >>>>> [21, 22, 23, 26, 31, 41], >>>>> ['blue', 'brown', 'red', 'green', 'black', 'yellow', >>>>> 'orange'], >>>>> ) >>>>> ) >>>>> >>>>> /Users/buck/trees/mine/sage/sage: line 134: 12283 Segmentation fault: >>>>> 11 "$SAGE_ROOT/src/bin/sage" "$@" >>>>> [I 12:15:10.735 NotebookApp] KernelRestarter: restarting kernel (1/5) >>>>> >>>>> >>>>> This is extremely similar to the behavior I was getting with the >>>>> pre-built >>>>> 6.5 sage, so I think it's an old bug rather than a problem with my >>>>> build. >>>>> In 6.5 there was no output (I suspect the Segmentation Fault message >>>>> was >>>>> gobbled somehow), so I never tried to enable / debug a core dump in >>>>> 6.5. >>>>> >>>>> Inspecting the 6.6 core dump, I see that it used 27528, mostly calling >>>>> back >>>>> and forth between two functions. >>>>> Smells like stack overflow to me. >>>>> >>>>> (lldb) bt >>>>> [27503/47384] >>>>> * thread #1: tid = 0x0000, 0x0000000103588007 >>>>> libpython2.7.dylib`vgetargskeywords + 23, stop reason = signal SIGSTOP >>>>> * frame #0: 0x0000000103588007 libpython2.7.dylib`vgetargskeywords >>>>> + >>>>> 23 >>>>> frame #1: 0x000000010358890e >>>>> libpython2.7.dylib`PyArg_ParseTupleAndKeywords + 174 >>>>> frame #2: 0x000000010356c40e libpython2.7.dylib`builtin___ >>>>> import__ >>>>> + 94 >>>>> frame #3: 0x00000001034a377f >>>>> libpython2.7.dylib`PyObject_CallFunctionObjArgs + 367 >>>>> frame #4: 0x000000010774c1c4 coerce.so`__Pyx_Import(name=< >>>>> unavailable>, >>>>> from_list=0x0000000117da7560, level=<unavailable>) + 180 at coerce.c: >>>>> 20339 >>>>> frame #5: 0x000000010774d08e >>>>> coerce.so`__pyx_f_4sage_9structure_6coerce_py_scalar_ >>>>> parent(__pyx_v_py_type=<unavailable>, >>>>> __pyx_skip_dispatch=< >>>>> unavailable>) + 510 at coerce.c:2938 >>>>> frame #6: 0x0000000107760318 >>>>> coerce.so`__pyx_f_4sage_9structure_6coerce_24CoercionModel_cache_maps_ >>>>> canonical_coercion(__pyx_v_self=0x00000001 >>>>> 07648d50, __pyx_v_x=0x00007f8fbfc37238, __pyx_v_y=0x0000000118c5f390, >>>>> __pyx_skip_dispatch=<unavailable>) + 3128 at coerce.c:9585 >>>>> frame #7: 0x0000000107763cfe >>>>> coerce.so`__pyx_pw_4sage_9structure_6coerce_ >>>>> 24CoercionModel_cache_maps_ >>>>> 25canonical_coercion >>>>> + 13 at coerce.c:105 >>>>> 64 >>>>> frame #8: 0x0000000107763cf1 >>>>> coerce.so`__pyx_pw_4sage_9structure_6coerce_ >>>>> 24CoercionModel_cache_maps_ >>>>> 25canonical_coercion(__pyx_v_self=0x00000 >>>>> 00107648d50, __pyx_args=0x0000000117e5f248, >>>>> __pyx_kwds=0x0000000000000000) >>>>> + 65 >>>>> frame #9: 0x0000000103574f10 libpython2.7.dylib`PyEval_EvalFrameEx >>>>> + >>>>> 26208 >>>>> frame #10: 0x0000000103575fb0 libpython2.7.dylib`PyEval_EvalCodeEx >>>>> + >>>>> 2144 >>>>> frame #11: 0x00000001034dae0c libpython2.7.dylib`function_call >>>>> + 124 >>>>> frame #12: 0x000000010d680381 >>>>> pynac.so`__Pyx_PyObject_Call(func=0x0000000108f0c410, >>>>> arg=<unavailable>, >>>>> kw=PyObject * at scalar) + 65 at pynac >>>>> .cpp:26785 >>>>> frame #13: 0x000000010d6a76e9 >>>>> pynac.so`py_gcd(__pyx_v_n=0x00007f8fbfc37238, >>>>> __pyx_v_k=0x0000000118c5f390) >>>>> + 521 at pynac.cpp:8416 >>>>> frame #14: 0x000000010d7d0f28 >>>>> libpynac.1.dylib`GiNaC::gcd(GiNaC::numeric const&, GiNaC::numeric >>>>> const&) + >>>>> 56 >>>>> frame #15: 0x000000010d7ad100 >>>>> libpynac.1.dylib`GiNaC::add::integer_content() const + 496 >>>>> frame #16: 0x000000010d7acef0 >>>>> libpynac.1.dylib`GiNaC::ex::integer_content() const + 16 >>>>> frame #17: 0x000000010d79fe01 libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 1377 >>>>> frame #18: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #19: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #20: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #21: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #22: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #23: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #24: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #25: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #26: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #28: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #29: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> ... >>>>> frame #27502: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27503: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #27504: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27505: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #27506: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27507: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #27508: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27509: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #27510: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27511: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #27512: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27513: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #27514: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27515: 0x000000010d7a026b libpynac.1.dylib`GiNaC::mul:: >>>>> eval(int) >>>>> const + 2507 >>>>> frame #27516: 0x000000010d71ba91 >>>>> libpynac.1.dylib`GiNaC::ex::construct_from_basic(GiNaC::basic const&) >>>>> + >>>>> 113 >>>>> frame #27517: 0x000000010d7d1ccd >>>>> libpynac.1.dylib`GiNaC::operator*(GiNaC::ex const&, GiNaC::ex const&) >>>>> + >>>>> 77 >>>>> frame #27518: 0x000000010da76768 >>>>> expression.so`__pyx_f_4sage_8symbolic_10expression_ >>>>> 10Expression__mul_(__pyx_v_left=0x0000000117db6cb0, >>>>> __pyx_v_right=0x0000000117db6ea8, __pyx_skip_dispatch=<unavailable>) + >>>>> 2504 >>>>> at expression.cpp:18109 >>>>> frame #27519: 0x00000001075bed30 >>>>> element.so`__pyx_pw_4sage_9structure_7element_11RingElement_11__mul__ >>>>> + >>>>> 64 >>>>> at element.c:17301 >>>>> frame #27520: 0x00000001075becf0 >>>>> element.so`__pyx_pw_4sage_9structure_7element_ >>>>> 11RingElement_11__mul__(__pyx_v_left=0x0000000117db6cb0, >>>>> __pyx_v_right=0x0000000117db6ea8) + 14 >>>>> frame #27521: 0x000000010349ff8b libpython2.7.dylib`PyNumber_ >>>>> Multiply >>>>> + >>>>> 187 >>>>> frame #27522: 0x0000000117bceb47 >>>>> wrapper_py.so`interp_py(args=0x0000000117dbeda8, >>>>> constants=0x00007f8fbd980f30, stack=<unavailable>, >>>>> code=0x00007f8fbd9a8eac) >>>>> + 519 at interp_py.c:110 >>>>> frame #27523: 0x0000000117bc1cca >>>>> wrapper_py.so`__pyx_pw_4sage_3ext_12interpreters_10wrapper_ >>>>> py_10Wrapper_py_5__call__(__pyx_v_self=0x00000001181db380, >>>>> __pyx_args=0x0000000117dbed90, __pyx_kwds=0x0000000000000000) + 138 at >>>>> wrapper_py.c:1478 >>>>> frame #27524: 0x00000001034a2bd3 libpython2.7.dylib`PyObject_Call >>>>> + >>>>> 67 >>>>> frame #27525: 0x00000001035727bd libpython2.7.dylib`PyEval_ >>>>> EvalFrameEx >>>>> + 16141 >>>>> frame #27526: 0x0000000103575fb0 libpython2.7.dylib`PyEval_ >>>>> EvalCodeEx >>>>> + >>>>> 2144 >>>>> frame #27527: 0x000000010357513d libpython2.7.dylib`PyEval_ >>>>> EvalFrameEx >>>>> + 26765 >>>>> frame #27528: 0x000000010e399354 >>>>> >>>>> >>>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups >>>> "sage-support" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an >>>> email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at http://groups.google.com/group/sage-support. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>>> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "sage-support" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/sage-support. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You 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