RFR(XS) 8037959: BitMap::resize frees old map before copying memory if !in_resource_area

[Jesper Wilhelmsson]

Looks good!
/Jesper

Mikael Gerdin skrev 21/3/14 10:39:
> Hi all,
>
> While reading through the code for BitMap I stumbled across a bug in the
> resize functionality for bitmaps not allocated in the resource area.
>
> The problem is that if a previous backing for the bitmap exists we free the
> backing memory before attempting to copy its contents to the new backing
> memory.
>
> I've followed the code paths leading to resize so I'm pretty sure this bug is
> currently benign since we never actually encounter this case but it seems like
> a good idea to fix this nevertheless.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8037959
> Webrev: http://cr.openjdk.java.net/~mgerdin/8037959/webrev.0
>
> /Mikael
>