[crac] RFR: 8372933: [CRaC] Restore failed due to incompatible or missing CPU features, try using -XX:CPUFeatures=0xfoo, 0xbar on checkpoint [v2]

[Jan Kratochvil]

On Wed, 7 Jan 2026 16:15:55 GMT, Radim Vansa <rvansa at openjdk.org> wrote:

>> Jan Kratochvil has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:
>> 
>>  - return original prototype of is_failed(), add new get_failed_bitmap()
>>  - !EQUALS->SUBSET
>>  - conjunction->intersection
>>  - Merge branch 'crac' into crac-conjunction
>>  - 8372933: [CRaC] Restore failed due to incompatible or missing CPU features, try using -XX:CPUFeatures=0xfoo,0xbar on checkpoint
>
> src/java.base/share/native/libcrexec/image_constraints.hpp line 83:
> 
>> 81:     const void* data;
>> 82:     size_t data_size;
>> 83:     const void* intersection; // data_size
> 
> I think you can make this just (non-const) `unsigned char *` rather than all the nasty casts when computing the intersection.

I just copycatted the field `data` using similar casts.

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PR Review Comment: https://git.openjdk.org/crac/pull/278#discussion_r2670000071