[Python-bugs-list] [ python-Bugs-420502 ] seek/tell beyond eof without exceptions

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Bugs item #420502, was updated on 2001-05-01 10:40
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Category: Python Interpreter Core
Group: None
>Status: Closed
>Resolution: Works For Me
Priority: 5
Submitted By: Grzegorz Makarewicz (mpmak)
Assigned to: Nobody/Anonymous (nobody)
Summary: seek/tell beyond eof without exceptions

Initial Comment:

Methods from FileObject like seek/tell doesn`t check 
for errno value. The result is that python exceptions 
aren`t throwned.

Small example:

import sys
SEEK_END = 2

def main():
	fp=open(sys.argv[0],'rb')
	fp.seek(0,SEEK_END)
	off = fp.tell()
	fp.seek(off,SEEK_END)
	x = fp.tell()
	print 'tell?',x

main()


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>Comment By: Jeremy Hylton (jhylton)
Date: 2001-05-07 21:33

Message:
Logged In: YES 
user_id=31392

The seek and tell methods do check the return value and
raise
an exception if the C function returns an error.  I don't
believe
a seek call will fail merely because it seeks beyond the end
of a file.

If you've got a legit bug, please include a C program that
demonstrates the correct behavior.


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