#17950: make modular_decomposition an optional spkg
-------------------------+-------------------------------------------------
Reporter: | Owner:
ncohen | Status: needs_review
Type: | Milestone: sage-6.6
enhancement | Resolution:
Priority: major | Merged in:
Component: graph | Reviewers:
theory | Work issues:
Keywords: | Commit:
Authors: | c19a921b7385396cd42a12774618418373887b82
Nathann Cohen | Stopgaps:
Report Upstream: N/A |
Branch: |
public/17950 |
Dependencies: |
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Comment (by dcoudert):
As I told you, we are making progress! I can now compile, start sage, pass
all tests, etc. without installing the spkg.
In the online doc of the `modular_decomposition` method. After `Note: In
order to use this method you must install the "modular_decomposition"
optional package.` you could add a `see blah blah blah`.
I'm now trying to install the spkg. I'm able to compile but:
{{{
sage: G = graphs.PetersenGraph()
sage: G.modular_decomposition()
/Users/dcoudert/sage/src/bin/sage-ipython:1:
********************************************************************************
Graph.modular_decomposition is known to return wrong results
This issue is being tracked at
http://trac.sagemath.org/sage_trac/ticket/13744.
********************************************************************************
('Prime', [2, 6, 3, 9, 7, 8, 0, 1, 5, 4])
sage: G.is_prime()
True
sage: G.modular_decomposition()
------------------------------------------------------------------------
Unhandled SIGSEGV: A segmentation fault occurred in Sage.
This probably occurred because a *compiled* component of Sage has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Sage will now terminate.
------------------------------------------------------------------------
./sage: line 134: 17334 Segmentation fault: 11 "$SAGE_ROOT/src/bin/sage"
"$@"
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/17950#comment:13>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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