[ python-Bugs-1174606 ] Reading /dev/zero causes SystemError

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Bugs item #1174606, was opened at 2005-04-01 04:48
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Category: Python Interpreter Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Adam Olsen (rhamphoryncus)
Assigned to: Nobody/Anonymous (nobody)
Summary: Reading /dev/zero causes SystemError

Initial Comment:
$ python -c 'open("/dev/zero").read()'
Traceback (most recent call last):
  File "<string>", line 1, in ?
SystemError: ../Objects/stringobject.c:3316: bad
argument to internal function

Compare with this two variants:

$ python -c 'open("/dev/zero").read(2**31-1)'
Traceback (most recent call last):
  File "<string>", line 1, in ?
MemoryError

$ python -c 'open("/dev/zero").read(2**31)'
Traceback (most recent call last):
  File "<string>", line 1, in ?
OverflowError: long int too large to convert to int

The unsized read should produce either MemoryError or
OverflowError instead of SystemError.

Tested with Python 2.2, 2.3, and 2.4.

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