RFR 9: 8133022: Instant.toEpochMilli() silently overflows

Xueming Shen xueming.shen at oracle.com
Thu Aug 6 21:00:36 UTC 2015


looks good.

On 8/6/15 11:07 AM, Roger Riggs wrote:
> Hi,
>
> Please review the update to include the additional case and fix.
>
> http://cr.openjdk.java.net/~rriggs/webrev-overflow-8133022/
>
> Thanks, Roger
>
>
> On 8/6/2015 12:37 PM, Roger Riggs wrote:
>> Hi Ivan,
>>
>> I looked at that but didn't find a reproducer.
>> I'll add that test case and respin.
>>
>> Thanks, Roger
>>
>>
>> On 8/6/2015 12:34 PM, Ivan Gerasimov wrote:
>>> Hi Roger!
>>>
>>> There seems to be another numeric overflow possibility a the line# 
>>> 1235, when 'seconds' is a large negative and 'nanos' is a small 
>>> positive.
>>>
>>> For example,
>>> ------------
>>>         Instant inst = Instant.ofEpochSecond(-9223372036854776L, 1);
>>>         System.out.println(inst.toEpochMilli());
>>> ------------
>>> prints out 9223372036854775616.
>>>
>>>
>>> Sincerely yours,
>>> Ivan
>>>
>>> On 06.08.2015 18:33, Roger Riggs wrote:
>>>> Please review a small fix and test for Instant.toEpochMilli 
>>>> ArithmeticOverflow.
>>>>
>>>> Webrev:
>>>> http://cr.openjdk.java.net/~rriggs/webrev-overflow-8133022/
>>>>
>>>> Issue:
>>>>     https://bugs.openjdk.java.net/browse/JDK-8133022
>>>>
>>>> Thanks, Roger
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>
>




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