invoke pure virtual function error

[tanbro]

code:

!/usr/bin/env python

-- coding: utf-8 --

import datetime
import uuid
import leveldb

def main():
n=10000

print("%s: write %d items to db.."%(datetime.datetime.now(),n))

db = leveldb.LevelDB("./leveldb.db")
for i in range(n):
    db.Put(str(i), "this is item %d"%(i))

print("%s: lookup a item from map..."%(datetime.datetime.now()))
print(db.Get("43"))
print("%s: ok"%(datetime.datetime.now()))



return 0

if name == 'main':
main()

error when exit
#0 0x008aa410 in __kernel_vsyscall ()
#1 0x0099ddf0 in raise () from /lib/libc.so.6
#2 0x0099f701 in abort () from /lib/libc.so.6
#3 0x00275b10 in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/libstdc++.so.6
#4 0x00273515 in ?? () from /usr/lib/libstdc++.so.6
#5 0x00273552 in std::terminate() () from /usr/lib/libstdc++.so.6
#6 0x00273c75 in __cxa_pure_virtual () from /usr/lib/libstdc++.so.6
#7 0x0013c91f in leveldb::InternalKeyComparator::Compare(leveldb::Slice const&, leveldb::Slice const&) const ()

from /usr/local/lib/python2.7/site-packages/leveldb.so
#8 0x0014d779 in leveldb::(anonymous namespace)::MergingIterator::FindSmallest() () from /usr/local/lib/python2.7/site-packages/leveldb.so
#9 0x0014e05c in leveldb::(anonymous namespace)::MergingIterator::Next() () from /usr/local/lib/python2.7/site-packages/leveldb.so
#10 0x0013698e in leveldb::DBImpl::DoCompactionWork(leveldb::DBImpl::CompactionState*) () from /usr/local/lib/python2.7/site-packages/leveldb.so
#11 0x00137241 in leveldb::DBImpl::BackgroundCompaction() () from /usr/local/lib/python2.7/site-packages/leveldb.so
#12 0x001377e8 in leveldb::DBImpl::BackgroundCall() () from /usr/local/lib/python2.7/site-packages/leveldb.so
#13 0x00153f92 in leveldb::(anonymous namespace)::PosixEnv::BGThreadWrapper(void*) () from /usr/local/lib/python2.7/site-packages/leveldb.so
#14 0x00af1832 in start_thread () from /lib/libpthread.so.0
#15 0x00a46e0e in clone () from /lib/libc.so.6

[forhappy]

Hello, thank you for testing at first!

But would you please provide a little more detailed information about your system environment(x86 or x64) and OS(ubuntu, centos,gentoo??), since the script you listed above could ran correctly on my computer, and here is the output:
$vim test-issue-1.py

#!/usr/bin/env python

-- coding: utf-8 --

import datetime
import uuid
import leveldb

def main():
n=10000
print("%s: write %d items to db.."%(datetime.datetime.now(),n))

db = leveldb.LevelDB("./leveldb.db")
for i in range(n):
    db.Put(str(i), "this is item %d"%(i))


print("%s: lookup a item from map..."%(datetime.datetime.now()))
print(db.Get("43"))
print("%s: ok"%(datetime.datetime.now()))

return 0

if name == 'main':
main()
Here are output, python exited normally:
$ python test-issue.py
2011-09-19 15:37:02.489891: write 10000 items to db..
2011-09-19 15:37:02.708287: lookup a item from map...
this is item 43
2011-09-19 15:37:02.708381: ok

And there was another guy met the same problem,here is the posts on google leveldb's offical issues site
(http://code.google.com/p/leveldb/issues/detail?id=40#c0)

So, I think this issues has to do with system configuration.

By the way, my platform and OS configuration:

OS: Ubuntu Linux forhappy 2.6.37.2utrace-generic #1 SMP Sat Mar 5 02:12:16 CST 2011 i686 GNU/Linux
CPU: Intel(R) Core(TM)2 Duo CPU
GCC: gcc (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
Python: Python 2.6.6

[tanbro]

thanks!
my environment:
OS: Linux centosHost 2.6.18-194.el5PAE #1 SMP Fri Apr 2 15:37:44 EDT 2010 i686 i686 i386 GNU/Linux
gcc: 4.1.2 20080704 (Red Hat 4.1.2-48)
Python: 2.7.1
CPU: Intel(R) Xeon(R) CPU E5335 @ 2.00GHz(1 CPU, 4 cores)