RFR: JDK-8256258: some missing NULL checks or asserts after CodeCache::find_blob_unsafe

[Matthias Baesken]

On Thu, 12 Nov 2020 10:54:06 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Most return values of CodeCache::find_blob_unsafe are NULL checked or at least handled by an asserts. However especially on ppc a few are missing and should be added (e.g. in nativeInst_ppc.cpp).
>
> hb-subset-plan.lst line 2:
> 
>> 1: GRARNN: gr29643 used before defined gr29643 at:
>> 2:     0:      L4Z        gr29647=(hb_array_t<unsigned int>).length(gr29643,8)
> 
> What's this change?

seems this is somehow related to harfbuzz but it should be removed of course

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PR: https://git.openjdk.java.net/jdk/pull/1181