[ruby-core:30500] [Bug #1296] [trunk/22981] 64-bit issues on trunk in ext/zlib

Issue #1296 has been updated by Yusuke Endoh.

Priority changed from Normal to Low
Target version changed from 1.9.2 to 1.9.x

Hi,

Thank you, Benoit.

2010/5/30 Benoit Daloze <[e-mail]>:
> Well, actually there are hundreds of them:
> $ cat make.log | grep 'warning: implicit conversion shortens 64-bit
> value into a 32-bit value' | wc -l #=> 375

Umm...  I wonder why OP reported only about zlib's warnings.


And I remembered you had posted recent make.log in ticket #3255:
https://gist.github.com/c8034f83cc9afbf79e6b

I glanced over a part of zlib, and I guess nearly all warnings
are false positive.  Some struct fields of zlib are int types,
and RSTRING_LEN(buf), which returns long type, is assigned to
the field.  But the `buf' seems to be created based on int-typed
length.  So the warnings are benign.

Of course some may be malignant.  If anyone realizes actual issue,
please let us know.


> It would indeed be nice to not have these warnings, but I suppose it
> is not so easy to solve.

Agreed.
To fix them, tons of casts will be needed.  I'm afraid if it may
enbug another issue.  Thus, at least in 1.9.2 release, we won't
fix these warnings unless actual issue is reported.

Thanks again!

-- 
Yusuke Endoh <[e-mail]>
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