RFR(XS) 8037959: BitMap::resize frees old map before copying memory if !in_resource_area
coleen.phillimore at oracle.com
Fri Mar 21 15:16:03 UTC 2014
Looks good :)
On 3/21/14 5:39 AM, Mikael Gerdin wrote:
> 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
> 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
More information about the hotspot-dev