RFR: 8068230: java.util.zip.Deflater.init throws InternalError

[Ivan Gerasimov]

Thanks Sherman and Alan for the reference to JDK-8008759!

It does seem to be the root cause of this issue also.
I've just requested an approval to backport that fix into jdk 7u.

To improve the error message of Deflater.init, I've created another 
issue: JDK-8068338.

Sincerely yours,
Ivan

On 28.12.2014 18:04, Alan Bateman wrote:
> On 26/12/2014 08:58, Ivan Gerasimov wrote:
>> Hello!
>>
>> Some zlib-related tests fail on Solaris hosts, throwing InternalError 
>> with no detailed message.
>> This might be due to incompatible version of zlib library installed 
>> on the host.
>>
>> To have a better diagnostics, it is proposed to specifically check 
>> for Z_VERSION_ERROR error code and issue a specific message in that 
>> case.
>>
>> Would you please help review the fix?
>>
>> BUGURL: https://bugs.openjdk.java.net/browse/JDK-8068230
>> WEBREV: http://cr.openjdk.java.net/~igerasim/8068230/0/webrev/
>
> There isn't sufficient information in the bug report but since it is a 
> fastdebug build then it would be good to get JDK-8008759 back-ported 
> to 7uX and see if the issue duplicates.
>
> As regards the proposed change to improve then exception when an 
> incompatible zlib is encountered then it probably should be moved to 
> another issue. One suggestion is to keep it as an internal error and 
> use the same exception message as is already done in Inflater.init.
>
> -Alan.
>
>