#13719: Illegal free in graph_generators
------------------------+---------------------------------------------------
Reporter: nbruin | Owner: rlm
Type: defect | Status: new
Priority: critical | Milestone: sage-5.6
Component: memleak | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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On linux:
{{{
$ export MALLOC_CHECK_=3
$ sage -t -gdb -force_lib "devel/sage/sage/graphs/graph_generators.py"
}}}
produces a SIGABRT. gdb traceback (first bit):
{{{
#0 0x00000031cfe36285 in raise () from /lib64/libc.so.6
#1 0x00000031cfe37b9b in abort () from /lib64/libc.so.6
#2 0x00000031cfe7774e in __libc_message () from /lib64/libc.so.6
#3 0x00000031cfe7da76 in malloc_printerr () from /lib64/libc.so.6
#4 0x00007fffbe7eeead in sage_free (ptr=<optimized out>) at
/usr/local/sage/5.0/local/include/csage/memory.h:46
#5 __pyx_pf_4sage_6graphs_5trees_12TreeIterator_1__dealloc__
(__pyx_v_self=0x7fffbf10c930) at sage/graphs/trees.c:807
#6 __pyx_tp_dealloc_4sage_6graphs_5trees_TreeIterator (o=0x7fffbf10c930)
at sage/graphs/trees.c:2486
#7 0x00007ffff7cc6bf3 in tupledealloc (op=0x7fffc3890450) at
Objects/tupleobject.c:220
#8 0x00007ffff7d12c49 in do_call (nk=<optimized out>, na=<optimized out>,
pp_stack=0x7fffffffb990, func=0x7ffff7fc33e0) at Python/ceval.c:4233
...
}}}
This indicates a double free/other memory management problem. Refcount
wrong?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13719>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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