[7u-60] backport request: 6571600 JNI use results in UnsatisfiedLinkError looking for libmawt.so

[david buck]

Hi!

Sergey Bylokhov and Artem Ananiev have reviewed this fix for 7u60 and 
have approved. Now all we need is the RM team to approve 
(7u60-critical-approved tag added in JBS).

Cheers,
-Buck

(2013/12/25 5:11), david buck wrote:
> Hi!
>
> I am resending this as a phase 2 request for inclusion into 7u60.
>
> This is a critical issue impacting multiple users and is an extremely
> low-risk change. I have tested jdk7 builds with this fix against our
> reproducer and all of the standard (default jprt) tests indicate no
> issues. This change has already passed review for inclusion into 5 / 6 / 9.
>
> Best Regards,
> -Buck
>
> (2013/12/24 6:02), david buck wrote:
>> Hi!
>>
>> This is a request to backport the flowing fix to JDK7.
>>
>> [ JDK-6571600 JNI use results in UnsatisfiedLinkError looking for
>> libmawt.so ]
>> https://bugs.openjdk.java.net/browse/JDK-657160
>>
>> The root cause of this issue is a name conflict with JNI_OnLoad provided
>> by awt_LoadLibrary.c and code loaded manually by the user (usually their
>> own JNI libraries). The fix is to use a different name for calling
>> dladdr that is much less likely to conflict with any names used by
>> customer code.
>>
>> The fix is exactly the same in JDK7 as it is in both JDK8 and JDK9. I
>> have of course tested the fix on JDK7 as well. The JDK9 fix can be found
>> here:
>>
>> http://hg.openjdk.java.net/jdk9/client/jdk/rev/35dfaa9954c2
>>
>> As the forest for JDK8u-dev is not up yet, I am submitting individual
>> requests to backport to both JDK8 and JDK7 in parallel.
>>
>> Cheers,
>> -Buck