8255466: C2 crashes at ciObject::get_oop() const+0x0

[sendaoYan]

Hi all,
This is backport of JDK-8255466, to fixes the corner case in C2. This PR also fix the compiler warning hotspot/src/share/vm/opto/type.cpp:2556:71: error: ‘this’ pointer is null with gcc13.
Patch does not apply cleanly due to in jdk8u, the jtreg tag @run main need add bootclasspath.
New test fails without the patch, passes with it.

Additional testing:

• linux x64 tier1/2/3 jtreg test
• linux aarch64 tier1/2/3 jtreg test

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8255466 needs maintainer approval

Issue

• JDK-8255466: C2 crashes at ciObject::get_oop() const+0x0 (Bug - P3)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk8u-dev.git pull/536/head:pull/536
$ git checkout pull/536

Update a local copy of the PR:
$ git checkout pull/536
$ git pull https://git.openjdk.org/jdk8u-dev.git pull/536/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 536

View PR using the GUI difftool:
$ git pr show -t 536

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk8u-dev/pull/536.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back syan! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 00: Full (95f32428)

[sendaoYan]

The GHA report several failures.

1. Some failures are CA issues, which is fixing by PR256. It's unrelated to this PR.

security/infra/java/security/cert/CertPathValidator/certification/CAInterop.java#digicerttlseccrootg5
security/infra/java/security/cert/CertPathValidator/certification/CAInterop.java#digicerttlsrsarootg5
security/infra/java/security/cert/CertPathValidator/certification/CAInterop.java#quovadisrootca1g3

2. Linux x86 gc/concurrentMarkSweep/SystemGCOnForegroundCollector.java report crash CompactibleFreeListSpace::block_size(HeapWord const*), which has been recorded by JDK-8303159, it's unrelated to this PR.
3. MacOS build fail, the GHA doesn't show any fail logs, maybe it's enviromental issue, or GHA can't pick up MacOS runner.

[sendaoYan]

/approval request Backport JDK-8255466 to fix the corner case in C2. The change has been verified on linux x64 and linux aarch64 with jtreg tier1/2/3.

[openjdk]

@sendaoYan
8255466: The approval request has been created successfully.

[phohensee]

This backport includes a backport of JDK-8250825. Please either do that backport first, or merge it with this PR.

[sendaoYan]

This backport includes a backport of JDK-8250825. Please either do that backport first, or merge it with this PR.

Thanks very much for your patience and careful review. I have created a backport PR of JDK-8250825.

[bridgekeeper]

@sendaoYan This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[sendaoYan]

Wait the prefixed PR merged.
/approval cancel

[openjdk]

@sendaoYan
8255466: The approval request has been cancelled successfully.

[bridgekeeper]

@sendaoYan This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[sendaoYan]

Wait the prefixed #552 merged.

[bridgekeeper]

@sendaoYan This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[sendaoYan]

/open

[openjdk]

@sendaoYan This pull request is already open

[bridgekeeper]

@sendaoYan This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[sendaoYan]

/open

[openjdk]

@sendaoYan This pull request is already open

[bridgekeeper]

@sendaoYan This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[sendaoYan]

/open

[openjdk]

@sendaoYan This pull request is already open