Re: [graph-tool] Segmentation fault using shortest_distance

On 20.03.2016 09:25, alice wrote:

Hi Tiago,

I seem to have a similar problem as Juan had a few years back. Using shortest_distance leads to a segmentation fault. The code below works fine if I build random networks with less than 100 nodes, but if I increase the number of nodes to 150 the segmentation fault occurs almost always.

    #!/usr/bin/env python
    from graph_tool.all import *
    show_config()
    g = random_graph(150, lambda: (poisson(3), poisson(3)))
    print 'try shortest distance'
    s = shortest_distance(g) #seg fault occurs here
    print 'success!'

This returns:

/system/software/linux-x86_64/lib/python2.7/site-packages/graph_tool/draw/cairo_draw.py:1464: RuntimeWarning: Error importing Gtk module: No module named gi; GTK+ drawing will not work. warnings.warn(msg, RuntimeWarning) version: 2.12 (commit 1d6bf978, Fri Nov 6 15:54:18 2015 +0100) gcc version: 4.9.2 compilation flags: -I/system/software/linux-x86_64/lib/boost/python2.7/1_55_0/include -I/system /software/linux-x86_64/lib/cgal/4.3/include -I/system/software/linux-x86_64/lib/mpfr/3.1.2/include -I/system/software/linux-x86_64/lib/gmp/5.1.3/include -I/system/software/linux-x86_64 /lib/sparsehash/gcc-4.8.2/2.0.2/include -I/system/software/linux-x86_64/python/2.7.8__gcc- 4.8.2/include/python2.7 -I/system/software/linux-x86_64/lib/boost/python2.7/1_55_0/include

-I/system/software/linux-x86_64/lib/python2.7/site-packages/numpy/core/include

-DSPARSEHASH_PREFIX=/system/software/linux-x86_64/lib/sparsehash/gcc-4.8.2/2.0.2/include /sparsehash -Wall -Wextra -ftemplate-backtrace-limit=0 -O3 -mavx -std=gnu++14 -DNDEBUG -ftemplate-depth-250 -Wno-deprecated -Wno-unknown-pragmas -O3 -fvisibility=default -fvisibility- inlines-hidden -fopenmp -DSPARSEHASH_PREFIX=/system/software/linux-x86_64/lib/sparsehash /gcc-4.8.2/2.0.2/include/sparsehash -L/system/software/linux-x86_64/lib/boost/python2.7 /1_55_0/lib -lboost_python -lboost_iostreams -lboost_regex -lboost_graph -L/system/software/linux- x86_64/python/2.7.8/lib -lpython2.7 -L/system/software/linux-x86_64/lib/cgal/4.3/lib -L/system /software/linux-x86_64/python/2.7.8__gcc-4.8.2/lib -lpython2.7 install prefix: /system/software/linux-x86_64/graph-tool/2.12 python dir: /system/software/linux-x86_64/python/2.7.8__gcc-4.8.2/lib/python2.7/site-packages graph filtering: True openmp: True uname: Linux login11 2.6.32-504.el6.x86_64 #1 SMP Wed Oct 15 04:27:16 UTC 2014 x86_64 try shortest distance Segmentation fault (core dumped)

I cannot reproduce this. Could you run this under GDB and provide a backtrace of the segfault?

Also, do you also observe it with the newest version, 2.13?

Best, Tiago