I rebuilt python-levenshtein with debugging symbols, here's a backtrace.
GNU gdb (GDB) 7.2-debian
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Reading symbols from /usr/bin/python2.7...(no debugging symbols found)...done.
(gdb) handle SIG33 pass nostop noprint
Signal Stop Print Pass to program Description
SIG33 No No Yes Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/bin/python2.7
[Thread debugging using libthread_db enabled]
Python 2.7.1+ (default, May 20 2011, 18:13:04)
[GCC 4.6.1 20110507 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> >>>
Program received signal SIGSEGV, Segmentation fault.
extract_stringlist (list=0xb7bd5ae8, name=0xb7fd9a43 "seqratio", n=3,
sizelist=0xbfffe7e0, strlist=0xbfffe7d8) at Levenshtein.c:1145
1145 if (PyObject_TypeCheck(first, &PyString_Type)) {
(gdb) backtrace full
#0 extract_stringlist (list=0xb7bd5ae8, name=0xb7fd9a43 "seqratio", n=3,
sizelist=0xbfffe7e0, strlist=0xbfffe7d8) at Levenshtein.c:1145
i = <value optimized out>
first = 0xa093d0a3
#1 0xb7fd151e in setseq_common (args=<value optimized out>, name=0xb7fd9a43
"seqratio", foo=..., lensum=0xbfffe83c) at Levenshtein.c:1298
n1 = 3
n2 = 3
strings1 = 0x0
strings2 = 0x0
sizes1 = 0x0
sizes2 = 0x0
strlist1 = 0xb7bd5ae8
strlist2 = 0xb7b96ed8
strseq1 = 0xb7b8e6cc
strseq2 = <value optimized out>
stringtype1 = <value optimized out>
stringtype2 = <value optimized out>
r = -1
#2 0xb7fd62a9 in seqratio_py (self=0x0, args=0xb7ba394c) at Levenshtein.c:1230
lensum = <value optimized out>
r = <value optimized out>
#3 0x080f989b in PyEval_EvalFrameEx ()
No symbol table info available.
#4 0x080ff8a4 in PyEval_EvalCodeEx ()
No symbol table info available.
#5 0x08100237 in PyEval_EvalCode ()
No symbol table info available.
#6 0x0811ce20 in ?? ()
No symbol table info available.
#7 0x0811e979 in PyRun_InteractiveOneFlags ()
No symbol table info available.
#8 0x0811eb15 in PyRun_InteractiveLoopFlags ()
No symbol table info available.
#9 0x0811edde in PyRun_AnyFileExFlags ()
No symbol table info available.
#10 0x0812e472 in Py_Main ()
No symbol table info available.
#11 0x0806026b in main ()
No symbol table info available.
(gdb) info registers
eax 0x827bec0 136822464
ecx 0xb7b8e40c -1212619764
edx 0xb7fd9a43 -1208116669
ebx 0xb7fde110 -1208098544
esp 0xbfffe740 0xbfffe740
ebp 0xb7fd06b0 0xb7fd06b0
esi 0xb7bd5ae8 -1212327192
edi 0xa093d0a3 -1600925533
eip 0xb7fd0df3 0xb7fd0df3 <extract_stringlist+51>
eflags 0x210293 [ CF AF SF IF RF ID ]
cs 0x73 115
ss 0x7b 123
ds 0x7b 123
es 0x7b 123
fs 0x0 0
gs 0x33 51
(gdb) x/16i $pc
=> 0xb7fd0df3 <extract_stringlist+51>: mov 0x4(%edi),%eax
0xb7fd0df6 <extract_stringlist+54>: cmp -0x8(%ebx),%eax
0xb7fd0dfc <extract_stringlist+60>: je 0xb7fd0ef8
<extract_stringlist+312>
0xb7fd0e02 <extract_stringlist+66>: mov -0x8(%ebx),%edx
0xb7fd0e08 <extract_stringlist+72>: mov %eax,(%esp)
0xb7fd0e0b <extract_stringlist+75>: mov %edx,0x4(%esp)
0xb7fd0e0f <extract_stringlist+79>: call 0xb7fcedc8 <PyType_IsSubtype@plt>
0xb7fd0e14 <extract_stringlist+84>: test %eax,%eax
0xb7fd0e16 <extract_stringlist+86>: jne 0xb7fd0ef8
<extract_stringlist+312>
0xb7fd0e1c <extract_stringlist+92>: mov 0x4(%edi),%eax
0xb7fd0e1f <extract_stringlist+95>: cmp -0x14(%ebx),%eax
0xb7fd0e25 <extract_stringlist+101>: je 0xb7fd0e41
<extract_stringlist+129>
0xb7fd0e27 <extract_stringlist+103>: mov -0x14(%ebx),%edx
0xb7fd0e2d <extract_stringlist+109>: mov %eax,(%esp)
0xb7fd0e30 <extract_stringlist+112>: mov %edx,0x4(%esp)
0xb7fd0e34 <extract_stringlist+116>: call 0xb7fcedc8 <PyType_IsSubtype@plt>
(gdb) thread apply all backtrace
Thread 1 (Thread 0xb7c4e6c0 (LWP 8908)):
#0 extract_stringlist (list=0xb7bd5ae8, name=0xb7fd9a43 "seqratio", n=3,
sizelist=0xbfffe7e0, strlist=0xbfffe7d8) at Levenshtein.c:1145
#1 0xb7fd151e in setseq_common (args=<value optimized out>, name=0xb7fd9a43
"seqratio", foo=..., lensum=0xbfffe83c) at Levenshtein.c:1298
#2 0xb7fd62a9 in seqratio_py (self=0x0, args=0xb7ba394c) at Levenshtein.c:1230
#3 0x080f989b in PyEval_EvalFrameEx ()
#4 0x080ff8a4 in PyEval_EvalCodeEx ()
#5 0x08100237 in PyEval_EvalCode ()
#6 0x0811ce20 in ?? ()
#7 0x0811e979 in PyRun_InteractiveOneFlags ()
#8 0x0811eb15 in PyRun_InteractiveLoopFlags ()
#9 0x0811edde in PyRun_AnyFileExFlags ()
#10 0x0812e472 in Py_Main ()
#11 0x0806026b in main ()
(gdb) quit
A debugging session is active.
Inferior 1 [process 8908] will be killed.
Quit anyway? (y or n)
Kind regards,
Ryan
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