RFR: 8338365: [PPC64, s390] Out-of-bounds array access in secondary_super_cache

[Andrew Haley]

On Wed, 14 Aug 2024 08:58:20 GMT, Amit Kumar <amitkumar at openjdk.org> wrote:

> Port for s390x and PPC for the bug: [JDK-8337958](https://bugs.openjdk.org/browse/JDK-8337958), Out-of-bounds array access in secondary_super_cache

src/hotspot/cpu/s390/macroAssembler_s390.cpp line 3323:

> 3321: 
> 3322:   // The bitmap is full to bursting.
> 3323:   z_cghi(r_array_length, Klass::SECONDARY_SUPERS_BITMAP_FULL - 2);

Suggestion:

  z_chi(r_array_length, Klass::SECONDARY_SUPERS_BITMAP_FULL - 2);

This probably doesn't matter, but it's a 32-bit length.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20578#discussion_r1718091900