RFR (S): 7167254: Crash on OSX in Enumerator.nextElement() with compressed oops

Vladimir Kozlov vladimir.kozlov at oracle.com
Tue May 15 08:44:41 PDT 2012


Looks good. So other places where we check SIGSEG/SIGBUS signal are fine?

Thanks,
Vladimir

On 5/15/12 5:38 AM, Roland Westrelin wrote:
> http://cr.openjdk.java.net/~roland/7167254/webrev.00/
>
> Crashes were reported for 64 bit VMs on OSX running in "compressed oops with base" mode. The crash is caused by a SIGBUS on a correctly aligned access to the first page of the heap which is used for implicit null checks. With this change hotspot on OSX expects either a SIGBUS or SIGSEGV for implicit null checks.
>
> Roland.


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