[10] RFR(XS): 8180587: Assert in layout_helper_log2_element_size(jint) compares bits instead of bytes

Tobias Hartmann tobias.hartmann at oracle.com
Thu May 18 14:52:30 UTC 2017


Hi Zoltan,

thanks for the review!

Best regards,
Tobias

On 18.05.2017 16:50, Zoltán Majó wrote:
> Hi Tobias,
> 
> 
> the proposed change looks good to me.
> 
> Thank you!
> 
> Best regards,
> 
> 
> Zoltan
> 
> 
> On 05/18/2017 09:47 AM, Tobias Hartmann wrote:
>> Hi,
>>
>> please review the following patch:
>> https://bugs.openjdk.java.net/browse/JDK-8180587
>> http://cr.openjdk.java.net/~thartmann/8180587/webrev.00/
>>
>> While working on value types, I wondered that the "l2esz <= LogBitsPerLong" assert in layout_helper_log2_element_size() did not fire although the array element size of a value type is greater than the size of a long. The problem is that the assert compares the log2 element size which is in bytes (see initialization in Klass::array_layout_helper()) to LogBitsPerLong which obviously is in bits.
>>
>> Thanks,
>> Tobias
> 


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