8318144: Match on enum constants with body compiles but fails with MatchException

[lahodaj]

Hi all,

This pull request contains a backport of commit 541ff714 from the openjdk/jdk repository.

The commit being backported was authored by Jan Lahoda on 7 Nov 2023 and was reviewed by Chen Liang and Vicente Romero.

Thanks!

---

Progress

• JDK-8318144 needs maintainer approval
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8318144: Match on enum constants with body compiles but fails with MatchException (Bug - P3 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u.git pull/332/head:pull/332
$ git checkout pull/332

Update a local copy of the PR:
$ git checkout pull/332
$ git pull https://git.openjdk.org/jdk21u.git pull/332/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 332

View PR using the GUI difftool:
$ git pr show -t 332

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u/pull/332.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back jlahoda! 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 backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @lahodaj This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[lahodaj]

/approval This bug leads to pattern matching switch misbehavior for enum constants with class bodies. This fix is contained, and should be safe. Standard javac testing will be done.

[openjdk]

@lahodaj usage: /approval [<id>] (request|cancel) [<text>]

[mlbridge]

Webrevs

• 00: Full (272d9cf1)

[lahodaj]

/approval request This bug leads to pattern matching switch misbehavior for enum constants with class bodies. This fix is contained, and should be safe. Standard javac testing was done.

[openjdk]

@lahodaj
8318144: The approval request has been created successfully.

[openjdk]

@lahodaj 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:

8318144: Match on enum constants with body compiles but fails with MatchException

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 74 new commits pushed to the master branch:

• f01df29: 8315082: [REDO] Generational ZGC: Tests crash with assert(index == 0 || is_power_of_2(index))
• afc506e: 8319700: [AArch64] C2 compilation fails with "Field too big for insn"
• 3df010f: 8320280: RISC-V: Avoid passing t0 as temp register to MacroAssembler::lightweight_lock/unlock
• ecb199a: 8313616: support loading library members on AIX in os::dll_load
• 220b36c: 8310239: Add missing cross modifying fence in nmethod entry barriers
• d7a3ac7: 8318587: refresh libraries cache on AIX in print_vm_info
• 0941f2c: 8318562: Computational test more than 2x slower when AVX instructions are used
• e7bd0ab: 8319961: JvmtiEnvBase doesn't zero _ext_event_callbacks
• 21a003a: 8320209: VectorMaskGen clobbers rflags on x86_64
• 689b90d: 8318957: enhance agentlib:jdwp help output by info about allow option
• ... and 64 more: https://git.openjdk.org/jdk21u/compare/337271f833972f00a0928e658e9b5d2ebcee67b6...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.

[lahodaj]

/integrate

[openjdk]

Going to push as commit b42280b.
Since your change was applied there have been 74 commits pushed to the master branch:

• f01df29: 8315082: [REDO] Generational ZGC: Tests crash with assert(index == 0 || is_power_of_2(index))
• afc506e: 8319700: [AArch64] C2 compilation fails with "Field too big for insn"
• 3df010f: 8320280: RISC-V: Avoid passing t0 as temp register to MacroAssembler::lightweight_lock/unlock
• ecb199a: 8313616: support loading library members on AIX in os::dll_load
• 220b36c: 8310239: Add missing cross modifying fence in nmethod entry barriers
• d7a3ac7: 8318587: refresh libraries cache on AIX in print_vm_info
• 0941f2c: 8318562: Computational test more than 2x slower when AVX instructions are used
• e7bd0ab: 8319961: JvmtiEnvBase doesn't zero _ext_event_callbacks
• 21a003a: 8320209: VectorMaskGen clobbers rflags on x86_64
• 689b90d: 8318957: enhance agentlib:jdwp help output by info about allow option
• ... and 64 more: https://git.openjdk.org/jdk21u/compare/337271f833972f00a0928e658e9b5d2ebcee67b6...master

Your commit was automatically rebased without conflicts.

[openjdk]

@lahodaj Pushed as commit b42280b.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.