[ python-Bugs-1274069 ] bz2module.c compiler warning

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Bugs item #1274069, was opened at 2005-08-26 10:25
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Category: Extension Modules
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Submitted By: Tim Peters (tim_one)
Assigned to: Nobody/Anonymous (nobody)
Summary: bz2module.c compiler warning

Initial Comment:
On Python HEAD, there's a new warning while 
compiling bz2module.c (MSVC 7.1):

python\Modules\bz2module.c(1095) : warning 
C4244: '=' :
   conversion from 'Py_off_t' to 'int', possible loss of data

Looks like a legitimate complaint to me.  The line in 
question:

	readsize = offset-bytesread;

Those have types int, Py_off_t, and int respectively.  Is 
it true that offset-bytesread _necessarily_ fits in an int?  
If so, a comment should explain why, and a cast should 
be added to squash the warning.  Or If the difference 
doesn't necessarily fit in an int, the code is wrong.

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