I tested http://python.org/ftp/python/3.3.0/python-3.3.0a4.amd64.msi bz2 module's decompression using the bz2 -files from: https://www.ee.oulu.fi/research/ouspg/PROTOS_Test-Suite_c10-archive
and found nothing. I did not use anything like Valgrind though. Should I try to run these tests again using Linux and Valgrind? Testscript is at: http://code.google.com/p/my-never-ending-projects/source/browse/trunk/tests/python3_3_bz2/test_decompress.py you might find it interesting.. or not. The test took about 2 hours and all the exceptions I got from tests were the like these two (exceptions.txt -file which was made by the test_decompress.py -testscript): -------- testcase 0: 00000184e108021bf3b3f860f1c7618c.bz2 file len: 76 local testtime: 2012-06-16 18:44:25 ('Traceback (most recent call last):\n', ' File "C:/projektit/bz2_python33_test/test_decompress.py", line 52, in <module>\n _ = bz2.decompress(fs)\n', ' File "C:\\Python33-0a4\\lib\\bz2.py", line 419, in decompress\n raise ValueError("Compressed data ended before the "\n', 'ValueError: Compressed data ended before the end-of-stream marker was reached\n') -------- testcase 1: 000001d8c11b84d738de284a8ba76226.bz2 file len: 3629 local testtime: 2012-06-16 18:44:25 ('Traceback (most recent call last):\n', ' File "C:/projektit/bz2_python33_test/test_decompress.py", line 52, in <module>\n _ = bz2.decompress(fs)\n', ' File "C:\\Python33-0a4\\lib\\bz2.py", line 417, in decompress\n results.append(decomp.decompress(data))\n', 'OSError: Invalid data stream\n') -- http://mail.python.org/mailman/listinfo/python-list