[issue23306] Within zipfile, use of zlib.crc32 raises OverflowError at argument-parsing time on large strings

[Gregory P. Smith]

Gregory P. Smith added the comment:

This appears to have been fixed by at least issue27130's https://hg.python.org/cpython/rev/2192edcfea02 recent commits.

greg:cpython/build27$ ./python -c "import zlib;zlib.crc32('a'*(1<<31))"
greg:cpython/build27$ ./python ../zipfile_2gb_test.py
True
greg:cpython/build27$ ls -al /tmp/zip_test.zip
-rw-rw-r-- 1 greg greg 2087407 Aug  7 09:28 /tmp/zip_test.zip
greg:~/sandbox/python/cpython/build27$ unzip -t /tmp/zip_test.zip
Archive:  /tmp/zip_test.zip
    testing: big                      OK
No errors detected in compressed data of /tmp/zip_test.zip.
greg:cpython/build27$ unzip -l /tmp/zip_test.zip
Archive:  /tmp/zip_test.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
2147483648  2016-08-07 09:27   big
---------                     -------
2147483648                     1 file

----------
resolution:  -> fixed
stage: needs patch -> resolved
status: open -> closed

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<http://bugs.python.org/issue23306>
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