Missing membar for constructors

[Doug Simon]

> On 10 Nov 2016, at 21:37, Andrew Haley <aph at redhat.com> wrote:
> 
> On 10/11/16 20:15, Doug Simon wrote:
>> We should move discussion of this patch to the github pull request once it exists.
> 
> OK.  My experience of github (and indeed git) is basically zero, so
> you'll need to have some patience with me.

No problem - a lot of us on the team sympathize with the learning curve having switched to git only somewhat recently.

The github documentation is fairly comprehensive but if you have any questions, feel free to ask here or in the graal-core Gitter room (https://gitter.im/graalvm/graal-core).

-Doug