[Bug 3134] New: JamVM is broken due to 2 new native methods in sun.misc.Unsafe (from S8158260)

[bugzilla-daemon at icedtea.classpath.org]

http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=3134

            Bug ID: 3134
           Summary: JamVM is broken due to 2 new native methods in
                    sun.misc.Unsafe (from S8158260)
           Product: IcedTea
           Version: 7-hg
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: blocker
          Priority: P5
         Component: JamVM
          Assignee: xerxes at zafena.se
          Reporter: tdaitx at gmail.com
                CC: unassigned at icedtea.classpath.org

Created attachment 1546
  --> http://icedtea.classpath.org/bugzilla/attachment.cgi?id=1546&action=edit
add 2 new sun.misc.unsafe methods to jamvm

[Issue]
The fix of OpenJDK's bug 8158260
(http://icedtea.classpath.org/hg/release/icedtea7-forest-2.6/hotspot/rev/4f8cbd54a9c6)
introduced 2 new native methods to the sun.misc.Unsafe class: isBigEndian0 and
unalignedAccess0. 

This completely broke JamVM and as of now it is impossible to start a jamvm
session. 

jtreg summary results:
hotspot   - Test results: passed: 5; failed: 309; error: 7
langtools - Test results: passed: 374; failed: 1,593; error: 1

An error output from a testcase:
----------System.err:(6/344)----------
Error initialising VM (initialiseMainThread)
Check the README for compatible class-libraries/versions
Exception occurred while printing exception (java/lang/NullPointerException)...
Original exception was java/lang/UnsatisfiedLinkError
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
result: Failed. Unexpected exit from test [exit code: 1]

Running java -jamvm -version fails the same way.


[Fix]
The simple fix is to add both methods to the natives.c file in the
classlib/openjdk directory.

I have tested this with IcedTea 2.6.7 and now jtreg passes:
hotspot   - Test results: passed: 220; failed: 90; error: 11
langtools - Test results: passed: 1,901; failed: 65; error: 2


I have reported this upstream at
https://sourceforge.net/p/jamvm/code/merge-requests/1/ and it is now waiting
review.

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