8275809: crash in [CommonComponentAccessibility getCAccessible:withEnv:]

[forantar]

Adding a JNI weak ref check. There's a couple of other similar places in the code where a JNI weak ref is checked for null, in the rest of the code we pass such refs to java where they are checked for null. So, I was not able to eye catch any other similar place in the a11y code where such check is also required.

---

Progress

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Issue

• JDK-8275809: crash in [CommonComponentAccessibility getCAccessible:withEnv:]

Reviewers

• Alexander Zuev (@azuev-java - Reviewer)
• Pankaj Bansal (@pankaj-bansal - Reviewer)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/6083/head:pull/6083
$ git checkout pull/6083

Update a local copy of the PR:
$ git checkout pull/6083
$ git pull https://git.openjdk.java.net/jdk pull/6083/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 6083

View PR using the GUI difftool:
$ git pr show -t 6083

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk/pull/6083.diff

[bridgekeeper]

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[openjdk]

@forantar The following label will be automatically applied to this pull request:

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[mlbridge]

Webrevs

• 00: Full (7d5d522f)

[victordyakov]

@azuev-java @pankaj-bansal please review

[openjdk]

@forantar This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8275809: crash in [CommonComponentAccessibility getCAccessible:withEnv:]

Reviewed-by: kizune, pbansal

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 16 new commits pushed to the master branch:

• 89671aa: 8273712: C2: Add mechanism for rejecting inlining of low frequency call sites and deprecate MinInliningThreshold.
• 3221a14: 8273678: TableAccessibility and TableRowAccessibility miss autorelease
• 7cf68b1: 8202932: java/awt/Component/NativeInLightShow/NativeInLightShow.java fails
• f610ef0: 8196440: Regression automated Test 'java/awt/TrayIcon/PopupMenuLeakTest/PopupMenuLeakTest.java' fails
• f143d2a: 8268595: java/io/Serializable/serialFilter/GlobalFilterTest.java#id1 failed in timeout
• 7f94302: 8275511: G1: Rename needs_remset_update to remset_is_tracked in G1HeapRegionAttr
• 0bcc174: 8275717: Reimplement STATIC_ASSERT to use static_assert
• f623298: 8271199: Mutual TLS handshake fails signing client certificate with custom sensitive PKCS11 key
• 1da5e6b: 8275104: IR framework does not handle client VM builds correctly
• 5dab76b: 8275381: G1: refactor 2 constructors of G1CardSetConfiguration
• ... and 6 more: https://git.openjdk.java.net/jdk/compare/4e647aa584cf12dae76e81e203ad4f1ebc08c1a2...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[pankaj-bansal]

looks good

[forantar]

/integrate

[openjdk]

Going to push as commit 7c88a59.
Since your change was applied there have been 29 commits pushed to the master branch:

• c9dec2f: 8273299: Unnecessary Vector usage in java.security.jgss
• b98ed55: 8275819: [TableRowAccessibility accessibilityChildren] method is ineffective
• 71d593e: 8275162: Use varargs in 'def' macros in mutexLocker.cpp
• 7ca053d: 8251904: vmTestbase/nsk/sysdict/vm/stress/btree/btree010/btree010.java fails with ClassNotFoundException: nsk.sysdict.share.BTree0LLRLRLRRLR
• 4be88d5: 8275047: Optimize existing fill stubs for AVX-512 target
• 63e0f34: 8275767: JDK source code contains redundant boolean operations in jdk.charsets
• 4961373: 8275137: jdk.unsupported/sun.reflect.ReflectionFactory.readObjectNoDataForSerialization uses wrong signature
• 174f553: 8275869: Problem list applications/jcstress/copy.java on Linux-aarch64
• 3ff085e: 8275582: Don't purge metaspace mapping lists
• 10e1610: 8251134: Unwrapping a key with a Private Key generated by Microsoft CNG fails
• ... and 19 more: https://git.openjdk.java.net/jdk/compare/4e647aa584cf12dae76e81e203ad4f1ebc08c1a2...master

Your commit was automatically rebased without conflicts.

[openjdk]

@forantar Pushed as commit 7c88a59.

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