8286797: Guards of constant value false are not permitted

[biboudis]

Simple fix that addresses this line from the spec:

It is a compile-time error if a when expression is a constant expression (15.29) with the value false.

Extracts one small utility method isBooleanWithValue in TreeInfo.

---

Progress

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Issue

• JDK-8286797: Guards of constant value false are not permitted

Reviewers

• Vicente Romero (@vicente-romero-oracle - Reviewer) ⚠️ Review applies to 8814f4fb

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/8745/head:pull/8745
$ git checkout pull/8745

Update a local copy of the PR:
$ git checkout pull/8745
$ git pull https://git.openjdk.java.net/jdk pull/8745/head

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Checkout this PR locally:
$ git pr checkout 8745

View PR using the GUI difftool:
$ git pr show -t 8745

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Download this PR as a diff file:
https://git.openjdk.java.net/jdk/pull/8745.diff

[bridgekeeper]

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[openjdk]

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[mlbridge]

Webrevs

• 02: Full - Incremental (2983b9ab)
• 01: Full - Incremental (8814f4fb)
• 00: Full (a1dac89c)

[vicente-romero-oracle]

looks good, just a minor suggestion, don't need another iteration

[openjdk]

@biboudis 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:

8286797: Guards of constant value false are not permitted

Reviewed-by: vromero

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 52 new commits pushed to the master branch:

• 6e38666: 8286944: Loom: Common ContinuationEntry cookie handling
• 47500b2: 8286897: Loom: Cleanup x86_64 StubGenerator
• fc3edf2: 8285687: Remove jtreg tag manual=yesno for java/awt/print/PrinterJob/PageRangesDlgTest.java
• 022e717: 8286462: Incorrect copyright year for src/java.base/share/classes/jdk/internal/vm/FillerObject.java
• dbda0e2: 8286969: Add a new test library API to execute kinit in SecurityTools.java
• 26c7c92: 8286694: Incorrect argument processing in java launcher
• 2a2d54e: 8286984: (ch) Problem list java/nio/channels/FileChannel/LargeMapTest.java on Windows
• a617709: 8281268: Resolve duplication of test ClassTransformer class
• b523c88: 8286122: [macos]: App bundle cannot upload to Mac App Store due to info.plist embedded in java exe
• 8323787: 8255439: System Tray icons get corrupted when windows scaling changes
• ... and 42 more: https://git.openjdk.java.net/jdk/compare/5e5500cbd79b40a32c20547ea0cdb81ef6904a3d...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.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change. Possible candidates are the reviewers of this PR (@vicente-romero-oracle) but any other Committer may sponsor as well.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[biboudis]

/integrate

[openjdk]

@biboudis
Your change (at version 2983b9a) is now ready to be sponsored by a Committer.

[vicente-romero-oracle]

/sponsor

[openjdk]

Going to push as commit fd36f37.
Since your change was applied there have been 56 commits pushed to the master branch:

• fa1b56e: 8280696: C2 compilation hits assert(is_dominator(c, n_ctrl)) failed
• af7cda5: 8285733: [s390] Vector Instruction Emitters for element-wise access are broken
• d24c84e: 8286873: Improve websocket test execution time
• db19dc6: 8284688: Minor cleanup could be done in java.security.jgss
• 6e38666: 8286944: Loom: Common ContinuationEntry cookie handling
• 47500b2: 8286897: Loom: Cleanup x86_64 StubGenerator
• fc3edf2: 8285687: Remove jtreg tag manual=yesno for java/awt/print/PrinterJob/PageRangesDlgTest.java
• 022e717: 8286462: Incorrect copyright year for src/java.base/share/classes/jdk/internal/vm/FillerObject.java
• dbda0e2: 8286969: Add a new test library API to execute kinit in SecurityTools.java
• 26c7c92: 8286694: Incorrect argument processing in java launcher
• ... and 46 more: https://git.openjdk.java.net/jdk/compare/5e5500cbd79b40a32c20547ea0cdb81ef6904a3d...master

Your commit was automatically rebased without conflicts.

[openjdk]

@vicente-romero-oracle @biboudis Pushed as commit fd36f37.

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