[9] RFR: 8168923: Use unsigned random long in a temp directory name

[Alan Bateman]

On 30/10/2016 03:43, Ivan Gerasimov wrote:
> Hello everyone!
>
> When File.createTempFile() is called, a random long value is 
> generated, which is then made positive with Math.abs() and then used 
> as a part of the directory name.
>
> Instead of using Math.abs() and Long.toString(), it would be better to 
> use Long.toUnsignedString():
> 1) no need to deal with the corner case of Long.MIN_VALUE,
> 2) increase the space of random values by the factor of 2.
>
> Would you please help review the fix?
>
> BUGURL: https://bugs.openjdk.java.net/browse/JDK-8168923
> WEBREV: http://cr.openjdk.java.net/~igerasim/8168923/00/webrev/
Looks okay, this code predates Long.toUnsignedString of course.

-Alan