[jdk19] RFR: 8289093: BlockLocationPrinter fails to decode addresses with G1 [v2]

[Thomas Schatzl]

On Sat, 25 Jun 2022 19:52:05 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Or fixing `block_is_obj`...
>
> Originally the method returned `nullptr`, but I'm not sure this is the best option, but probably the best for this change.

I just return `nullptr`, fixing `block_is_obj` (returning false for addresses >= top) does not seem to be worth.

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PR: https://git.openjdk.org/jdk19/pull/68