[Libjpeg-devel-6x] jchuff.c produces compiler warnings

[Adam F. <ada...@uk...>]

Hi There,

I'm trying to fix a bug whereby compiling jchuff.c (link below, to avoid 
ambiguity) causes the OpenJDK build to fail due to the array-bounds 
warning generated when these criteria are met:
- The platform is pLinux or zLinux 
- The gcc version is 4.8.5 (default release on many linux-based OS').
- The optimization level is -O3

OpenJDK's copy of jchuff: 
http://hg.openjdk.java.net/jdk/jdk/file/d9bc8557ae16/src/java.desktop/share/native/libjavajpeg/jchuff.c

After some poking around, I discovered that making a simple change to 
jchuff.c can prevent the warning.

http://cr.openjdk.java.net/%7Estuefe/webrevs/8200052-fix-warning-in-jchuff.c/webrev.00/webrev/src/java.desktop/share/native/libjavajpeg/jchuff.c.udiff.html

The OpenJDK community is willing to accept the change, but is concerned 
that the next merge from your upstream source will splat the change. 

Could I impose on you to add this change to your source, thus preventing 
said splat?

Best Regards

Adam

P.S. It would be great to get this source into the latest IJG source as 
well (e.g. 9c), but their contact page (url below) doesn't appear to work. 
A spinny thingy appears when you click send, but nothing else happens.

http://jpegclub.org/reference/contact/

Here's hoping the IJG, or someone with a line to them, is monitoring this 
list so we can get the fix across.

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