#12054: crash in digraph.py
-----------------------------+----------------------------------------------
Reporter: emil | Owner: tbd
Type: PLEASE CHANGE | Status: new
Priority: major | Milestone: sage-4.8
Component: PLEASE CHANGE | Keywords: diagraph SIGABRT
feedback_edge_set
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
-----------------------------+----------------------------------------------
I compiled 4.7.2 on the Live CD and got this error:
sage -t -force_lib "devel/sage/sage/graphs/digraph.py" # Killed/
crashed
I ran the test with -verbose
{{{
Trying:
cycle.size()###line 1338:_sage_ >>> cycle.size()
Expecting:
5
# >>> dcycle.feedback_edge_set(value_only=True)
5.0
**********************************************************************
File "/mnt/sda6/COMPILE/sage-4.7.2/devel/sage/sage/graphs/digraph.py",
line 998, in __main__.example_22
Failed example:
cycle.size()###line 1338:_sage_ >>> cycle.size()
Expected:
5
# >>> dcycle.feedback_edge_set(value_only=True)
5.0
Got:
5
and then:
Trying:
feedback = dg.feedback_edge_set()###line 1348:_sage_ >>>
feedback = dg.feedback_edge_set()
Expecting nothing
Assertion failed: orig->m > 0 && orig->n > 0
Error detected in file glpapi09.c at line 289
/mnt/sda6/COMPILE/sage-4.7.2/local/lib/libcsage.so(print_backtrace
+0x3b)[0xb71f231e]
/mnt/sda6/COMPILE/sage-4.7.2/local/lib/libcsage.so(sigdie+0x17)
[0xb71f235e]
/mnt/sda6/COMPILE/sage-4.7.2/local/lib/libcsage.so(sage_signal_handler
+0x1c4)[0xb71f1e97]
[0xffffe400]
/lib/libc.so.6(abort+0x182)[0xb7472ab2]
/usr/local/lib/libglpk.so.0(+0x43b0e)[0xaea1eb0e]
/usr/local/lib/libglpk.so.0(+0x439ff)[0xaea1e9ff]
/usr/local/lib/libglpk.so.0(glp_intopt+0xae0)[0xae9e89b0]
/mnt/sda6/COMPILE/sage-4.7.2/local/lib/python/site-packages/sage/
numerical/backends/glpk_backend.so(+0x5c47)[0xaea99c47]
/mnt/sda6/COMPILE/sage-4.7.2/local/lib/python/site-packages/sage/
numerical/mip.so(+0x29036)[0xb0bcf036]
/mnt/sda6/COMPILE/sage-4.7.2/local/lib/libpython2.6.so.
1.0(PyCFunction_Call+0x128)[0xb7642c58]
.lotsof that sort..
/mnt/sda6/COMPILE/sage-4.7.2/local/lib/libpython2.6.so.1.0(Py_Main
+0xc7d)[0xb76d0c5d]
python(main+0x27)[0x8048667]
/lib/libc.so.6(__libc_start_main+0xe6)[0xb745bbc6]
python[0x80485a1]
------------------------------------------------------------------------
Unhandled SIGABRT: An abort() 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(). You might
want to run Sage under gdb with 'sage -gdb' to debug this.
Sage will now terminate.
------------------------------------------------------------------------
The doctested process was killed by signal 6
[5.7 s]
}}}
tread on sage-devel
[http://groups.google.com/group/sage-
devel/browse_thread/thread/e1886d5ba5ade945]
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12054>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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