8000330: (fc) FileChannel.truncate issues when given size > file size

[Alan Bateman]

On 03/11/2012 22:09, Jeff Hain wrote:
> >The webrev with the proposed changes is here:
> >
> >http://cr.openjdk.java.net/~alanb/8000330+8002180/webrev/ 
> <http://cr.openjdk.java.net/%7Ealanb/8000330+8002180/webrev/>
>
> position0(fd, p) is called even if position didn't change
> (was already the case before).
This is necessary because truncating the file can change the position, 
Windows in particular. It could re-factored to deal with platform 
specific behavior or the platform implementations could be changed to 
reset the position but it hardly seems worth it.

>
> Also the exception message could be "Negative size"
> for homogeneity with map method.
This make sense - thanks.

-Alan.
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