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gh-82500: Fix asyncio sendfile overflow on 32bit (#107056)

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J. Nick Koston 2023-07-22 23:07:14 -05:00 • committed by GitHub
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commit 9eeb4b485f
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3
Lib/asyncio/unix_events.py
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@ -394,6 +394,9 @@ def _sock_sendfile_native_impl(self, fut, registered_fd, sock, fileno,
fut.set_result(total_sent)
return
# On 32-bit architectures truncate to 1GiB to avoid OverflowError
blocksize = min(blocksize, sys.maxsize//2 + 1)
try:
sent = os.sendfile(fd, fileno, offset, blocksize)
except (BlockingIOError, InterruptedError):

1
Misc/NEWS.d/next/Library/2023-07-22-16-44-58.gh-issue-82500.cQYoPj.rst Normal file
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@ -0,0 +1 @@
Fix overflow on 32-bit systems with :mod:`asyncio` :func:`os.sendfile` implemention.