RFR: 8344352: 32-bit builds crash after JDK-8305895 [v2]

Aleksey Shipilev shade at openjdk.org
Mon Nov 18 11:14:02 UTC 2024


> The underlying reason is that newly added `ObjLayout::initialize` is set up in `LP64` block, so 32-bit platforms miss it. I moved the initialization closer to VM init sequence, as it _is_ the essential part of VM init, not just argument parsing. This is the same thing I did in my POC patch in [JDK-8343648](https://bugs.openjdk.org/browse/JDK-8343648).
> 
> Additional testing:
>  - [x] Linux x86_32 fastdebug cross-build (now able to run simple things)
>  - [x] Linux arm32 fastdebug cross-build (now able to run simple things)
> 
> Both builds are still broken at build-time CDS creation steps due to CDS issues, but they do not fail with ObjLayout bug anymore.

Aleksey Shipilev 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 two additional commits since the last revision:

 - Merge branch 'master' into JDK-8344352-32bit-fail-objlayout
 - Fix

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/22196/files
  - new: https://git.openjdk.org/jdk/pull/22196/files/f11b954f..49b7ae79

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22196&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22196&range=00-01

  Stats: 60 lines in 4 files changed: 35 ins; 15 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/22196.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22196/head:pull/22196

PR: https://git.openjdk.org/jdk/pull/22196


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