RFR (XS) 8015265: revise the fix for 8007037

Calvin Cheung calvin.cheung at oracle.com
Thu May 23 12:18:10 PDT 2013


Hi Serguei,

Thanks for your quick review.

Calvin

On 5/23/2013 12:00 PM, serguei.spitsyn at oracle.com wrote:
> Hi Calvin,
>
> The fix looks fine.
> This is an interesting bug.
> Thank you for discovering and fixing it!
>
> Thanks,
> Serguei
>
> On 5/23/13 11:51 AM, Calvin Cheung wrote:
>> While working on a fix for 8014431, it was found that the fix for 
>> 8007037 in constantPool.cpp needs to be revised. David H. suggested 
>> that this should be addressed in a separate bug fix.
>>
>> The problem is that the following statement:
>> bool match = compare_entry_to(k1, cp2, k2, CHECK_false) &&
>>                         compare_operand_to(i1, cp2, i2, CHECK_false);
>>
>> expands to:
>>
>> bool match = compare_entry_to(k1, cp2, k2, THREAD);
>> if (HAS_PENDING_EXCEPTION) return false;
>> (0) && compare_operand_to(i1, cp2, i2, THREAD);
>> if (HAS_PENDING_EXCEPTION) return false;
>> (0);
>>
>> so the match has the wrong value.
>>
>> webrev: http://cr.openjdk.java.net/~ccheung/8015265/webrev/
>> bug: http://bugs.sun.com/view_bug.do?bug_id=8015265    (not available 
>> yet)
>> jbs: https://jbs.oracle.com/bugs/browse/JDK-8015265
>>
>> Testing:
>>     jprt
>>     vm.quick on linux_x64
>>
>> thanks,
>> Calvin
>



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