[8u] Request for approval: 8087120: [GCC5] java.lang.StackOverflowError on Zero JVM initialization on non x86 platforms

[Rob McKenna]

Approved. Please add a suitable noreg label to the bug.

	-Rob

On 18/11/15 10:50, Severin Gehwolf wrote:
> Hi,
>
> I'd like to ask for approval of a Zero-specific hotspot 8 backport.
> Currently, the jdk8u forest fails to build the Zero variant with GCC 5
> due to this:
>
> src/os_cpu/linux_zero/vm/os_linux_zero.cpp:59:10: error: function returns address of local variable [-Werror=return-local-addr]
>     return dummy;
>            ^
> src/os_cpu/linux_zero/vm/os_linux_zero.cpp:58:11: note: declared here
>     address dummy = (address) &dummy;
>             ^
> Note: Fedora 22+ have GCC 5. The above problem and the actual overflow
> bug (if warning is ignored at build time + on relevant arch) goes away
> when JDK-8087120 gets backported to 8u.
>
> Original Bug: https://bugs.openjdk.java.net/browse/JDK-8087120
> 9 webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8087120/webrev.01/
> 9 review thread: http://mail.openjdk.java.net/pipermail/hotspot-dev/2015-June/018884.html
>
> The 9 webrev applies with no change to the 8 forest. I'd need somebody
> to sponsor this for me.
>
> Thanks,
> Severin
>