On Fri, 01 Apr 2011 17:20:57 +0100
"Dr. David Kirkby" <david.kir...@onetel.net> wrote:
> On 04/ 1/11 12:54 PM, Burcin Erocal wrote:
> > On Fri, 01 Apr 2011 00:37:46 +0100
> > "Dr. David Kirkby"<david.kir...@onetel.net> wrote:
> >
> >> I've built Sage 64-bit on OpenSolaris but it crashes at startup. I've
> >> run gdb and find the bit of code that's causing the crash is this.
> >>
> >> ./devel/sage-main/sage/symbolic/function.cpp
> >>
> >>
> >> /* "sage/symbolic/function.pyx":109
> >> * raise ValueError, real_fname + " parameter must
> >> be callable" *
> >> * if not self._is_registered(): #<<<<<<<<<<<<<<
> >> * self._register_function()
> >> *
> >> */
> > <snip>
> >> allows Sage to run. It's not 100% stable, but much better than before.
> >>
> > <snip>
> >> Can anyone see if there might be something wrong with this code,
> >> which is causing Sage to segfault?
> >
> > It might be due to the linker initializing the library in a different
> > order. Can you post a backtrace so we can see which function it is
> > trying to construct?
>
> Here's a backtrace
<snip>
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000000003eb0a5 in ?? ()
> (gdb) bt
> #0 0x00000000003eb0a5 in ?? ()
> #1 0xfffffd7fff2ac5d1 in _Unwind_RaiseException_Body () from
> /lib/64/libc.so.1
> #2 0xfffffd7fff2ac855 in _Unwind_RaiseException () from /lib/64/libc.so.1
> #3 0xfffffd7ff91d6729 in __cxa_throw (obj=<value optimized out>,
> tinfo=<value
> optimized out>, dest=<value optimized out>)
> at ../../../../../gcc-4.5.0/libstdc++-v3/libsupc++/eh_throw.cc:78
> #4 0xfffffd7fcec6d5ff in GiNaC::function::find_function (name=@0x4a359b0,
> nparams=2) at function.cpp:1446
> #5 0xfffffd7fce9454ad in
> __pyx_f_4sage_8symbolic_8function_15BuiltinFunction__is_registered
> (__pyx_v_self=0x4a142f0) at sage/symbolic/function.cpp:7301
> #6 0xfffffd7fce950755 in
> __pyx_pf_4sage_8symbolic_8function_8Function___init__
> (__pyx_v_self=0x4a142f0, __pyx_args=<value optimized out>,
> __pyx_kwds=<value optimized out>) at sage/symbolic/function.cpp:2374
> #7 0xfffffd7fffde7a70 in ?? ()
<the stack is corrupted so the rest is useless>
David gave me an account on the machine. Here is the Python call stack:
File "/export/home/burcin/sage-4.7.alpha3/local/bin/sage-ipython", line 21,
in <module>
ipy_sage = IPython.Shell.start()
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/IPython/Shell.py",
line 1233, in start
return shell(user_ns = user_ns)
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/IPython/Shell.py",
line 78, in __init__
debug=debug,shell_class=shell_class)
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/IPython/ipmaker.py",
line 644, in make_IPython
force_import(profmodname)
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/IPython/ipmaker.py",
line 66, in force_import
__import__(modname)
File "ipy_profile_sage.py", line 7, in <module>
import sage.all_cmdline
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/all_cmdline.py",
line 14, in <module>
from sage.all import *
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/all.py",
line 75, in <module>
from sage.schemes.all import *
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/schemes/all.py",
line 25, in <module>
from hyperelliptic_curves.all import *
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/schemes/hyperelliptic_curves/all.py",
line 1, in <module>
from constructor import HyperellipticCurve
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/schemes/hyperelliptic_curves/constructor.py",
line 11, in <module>
from sage.schemes.generic.all import ProjectiveSpace
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/schemes/generic/all.py",
line 4, in <module>
from affine_space import AffineSpace, is_AffineSpace
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/schemes/generic/affine_space.py",
line 24, in <module>
import algebraic_scheme
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/schemes/generic/algebraic_scheme.py",
line 143, in <module>
import toric_variety
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/schemes/generic/toric_variety.py",
line 236, in <module>
from sage.geometry.cone import Cone, is_Cone
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/geometry/cone.py",
line 174, in <module>
from sage.combinat.posets.posets import FinitePoset
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/combinat/posets/posets.py",
line 24, in <module>
from sage.graphs.all import DiGraph
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/graphs/all.py",
line 16, in <module>
from graph_editor import graph_editor
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/graphs/graph_editor.py",
line 22, in <module>
from sagenb.misc.support import EMBEDDED_MODE
File
"/export/home/burcin/sage-4.7.alpha3/devel/sagenb/sagenb/misc/support.py", line
563, in <module>
from sage.symbolic.all import Expression, SR
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/symbolic/all.py",
line 9, in <module>
from sage.symbolic.relation import solve, solve_mod, solve_ineq
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/symbolic/relation.py",
line 314, in <module>
from sage.calculus.calculus import maxima
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/calculus/calculus.py",
line 374, in <module>
from sage.symbolic.integration.integral import indefinite_integral, \
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/symbolic/integration/integral.py",
line 129, in <module>
indefinite_integral = IndefiniteIntegral()
File
"/export/home/burcin/sage-4.7.alpha3/local/lib/python2.6/site-packages/sage/symbolic/integration/integral.py",
line 62, in __init__
BuiltinFunction.__init__(self, "integrate", nargs=2)
It seems that cones.py looks for posets.py, which needs the graphs
module, which initializes the graph_editor. The graph editor tries to
see if it's in the notebook or the command line, but sagenb imports SR
and Expression from sage.symbolic.all (line 563 of
sagenb/misc/support.py). This tries to initialize the functions
(integrate in this case) before pynac is initialized...
We need a better solution for making sure modules are initialized
properly before anything is imported from them. I thought putting an
__init__.py file in sage/symbolic/ with "import pynac" would solve the
problem. However, it seems that python just ignores that file.
Any suggestions on how to solve the general problem properly?
BTW, telling people to import from .all if they are outside the current
module is just asking for trouble. We can't put initialization code in
all.py, since it would just get imported to the main namespace.
Cheers,
Burcin
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