RFR (S): 8196485: FromCardCache default card index can cause crashes

[Aleksey Shipilev]

On 03/08/2018 09:59 AM, Thomas Schatzl wrote:
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8196485
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8196485/webrev/

Ha! Ouch. Looks good, except:

*) I feel uneasy about assigning negative values to unsigned vars. Intended to be UINTPTR_MAX?

static const uintptr_t InvalidCard = -1;

*) "heap region" here, probably:

 134   // of the given heapregion.


Thanks,
-Aleksey

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