[9] RFR(XS): 8169941: CodeBlob::is_frame_complete_at() does not honor CodeOffsets::frame_never_safe

[Vladimir Kozlov]

Good.

Thanks,
Vladimir

On 11/18/16 3:43 AM, Tobias Hartmann wrote:
> Hi,
>
> please review the following patch:
> https://bugs.openjdk.java.net/browse/JDK-8169941
> http://cr.openjdk.java.net/~thartmann/8169941/webrev.00/
>
> CodeBlob::is_frame_complete_at() should always return false if _frame_complete_offset is set to CodeOffsets::frame_never_safe (-1). Otherwise we may crash during profiling because frame::safe_for_sender() returns true for an unsafe runtime stub frame (see JDK-8169654).
>
> Tested with JPRT and RBT (running).
>
> Thanks,
> Tobias
>