RFR (XS) 8076236: VM permits illegal flags for class init method

Karen Kinnear karen.kinnear at oracle.com
Fri Apr 3 12:31:47 UTC 2015


Harold,

Looks good.

thanks,
Karen

On Apr 3, 2015, at 8:15 AM, harold seigel wrote:

> Hi David,
> 
> Thanks for your comments.  I don't intend to backport this fix but this fix will affect old byte codes when they are run with JDK-9. Hopefully, this won't affect too many programs.
> 
> I guess there's always a trade-off between spec-affinity, compatibility, (and security).  See https://bugs.openjdk.java.net/browse/JDK-8076338 for example.
> 
> Thanks, Harold
> 
> On 4/2/2015 9:12 PM, David Holmes wrote:
>> Hi Harold,
>> 
>> Seems like a reasonable fix to become compliant with the spec, but it is technically a compatability issue. There may be generated bytecode out there from tools that didn't do the right thing with access modifiers and it will now be rejected. Possibly okay for 9 but I wouldn't backport this.
>> 
>> David
>> 
>> On 1/04/2015 10:11 PM, harold seigel wrote:
>>> Hi,
>>> 
>>> Please review this small fix for JDK-8076236.  The fix moves the check
>>> for multiple access flags so that it covers all methods in a class
>>> including instance initialization methods.
>>> 
>>> Open webrev:  http://cr.openjdk.java.net/~hseigel/bug_8076236/
>>> 
>>> JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8076236
>>> 
>>> The fix was tested with the JCK lang, vm, and api tests, hotspot jtreg
>>> tests, testbase split_verifier and quick tests, and the test cases
>>> provided in the bug.  No new tests are included with this fix because
>>> new JCK tests will test this.
>>> 
>>> Thanks, Harold
> 



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