Opened 10 years ago
Last modified 10 years ago
#13719 closed defect
Illegal free in graph_generators — at Initial Version
| Reported by: | nbruin | Owned by: | rlm |
|---|---|---|---|
| Priority: | critical | Milestone: | sage-5.6 |
| Component: | graph theory | Keywords: | graphs segfault |
| Cc: | Merged in: | ||
| Authors: | Reviewers: | ||
| Report Upstream: | N/A | Work issues: | |
| Branch: | Commit: | ||
| Dependencies: | Stopgaps: |
Status badges
Description
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?
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