Error Prone 2.40.0

Changes:

• Bug fixes and improvements
• Releases (including snapshots) have migrated from OSSRH to the Central Publisher Portal

Full changelog: v2.39.0...v2.40.0

Error Prone 2.39.0

Changes:

• Temporarily downgrade to Guava 33.4.0 (#5108)

Checks:

• BooleanLiteral: Prefer true to Boolean.TRUE
• ExpensiveLenientFormatString: Renamed from PreconditionsExpensiveString, detects unnecessary calls to String.format in the arguments of lenient formatting methods.
• UnnecessaryQualifier: Detects @Qualifier or @BindingAnnotation annotations that have no effect, and can be removed

Issues: #4996, #5045

Full changelog: v2.38.0...v2.39.0

Error Prone 2.38.0

New checks:

• AddNullMarkedToPackageInfo: adds @org.jspecify.annotations.NullMarked annotation to package-info files
• IntLiteralCast: Suggests a literal of the desired type instead of casting an int literal to a long, float, or double
• MisleadingEmptyVarargs: Discourages calling varargs methods that expect at least one argument with no arguments, like Mockito's thenThrow
• PreconditionsExpensiveString: Discourages expensive string formatting in Guava Preconditions checks
• SelfSet: Detects mistakes like proto.setFoo(proto.getFoo())
• UnnecessaryCopy: detect unnecessary copies of proto Lists and Maps.

Closed issues: #4924, #4897, #4995

Full changelog: v2.37.0...v2.38.0

Error Prone 2.37.0

Changes:

• The annotations that were previously in error_prone_type_annotations have been been merged into error_prone_annotations. error_prone_type_annotations is now deprecated, and will be removed in a future release.

New checks:

• AssignmentExpression - The use of an assignment expression can be surprising and hard to read; consider factoring out the assignment to a separate statement.
• IntFloatConversion - Detect calls to scalb that should be using the double overload instead
• InvalidSnippet - Detects snippets which omit the : required for inline code.
• JUnit4EmptyMethods - Detects empty JUnit4 @Before, @After, @BeforeClass, and @AfterClass methods.
• MockIllegalThrows - Detects cases where Mockito is configured to throw checked exception types which are impossible.
• NegativeBoolean - Prefer positive boolean names.
• RuleNotRun - Detects TestRules not annotated with @Rule, that won't be run.
• StringConcatToTextBlock - Replaces concatenated multiline strings with text blocks.
• TimeInStaticInitializer - Detects accesses of the system time in static contexts.

Closed issues:

• Propagate check flags in patch mode (#4699)
• Fixes a crash in ComputeIfAbsentAmbiguousReference (#4736)
• Show the field name in HidingField diagnostics (#4775)
• Add support for jakarta annotations to some checks (#4782)
• FloatingPointAssertionWithinEpsilonTest depends on default locale (#4815)
• @InlineMe patching of Strings.repeat produces broken code (#4819)
• Fix a crash in IdentifierName on unnamed (_) variables (#4847)
• Fix a crash in ArgumentParameterSwap (#490)

Full changelog: v2.36.0...v2.37.0

Error Prone 2.36.0

Changes:

• Add new matcher interfaces to ErrorProneScanner for AST nodes introduced after Java 11 (e5fd194)
• Fix compatibility with latest JDK 24 EA builds (d67bc15)
• Check that --should-stop=ifError=FLOW is set when using the -Xplugin integration (e71db1f)

New checks:

• DuplicateBranches: Discourage conditional expressions and if statements where both branches are the same
• RedundantControlFlow: Reports redundant continue statements.

Closed issues: #4633, #4646

Full changelog: v2.35.1...v2.36.0

Error Prone 2.35.1

Error Prone's dependency on protobuf has been downgraded to 3.25.5 for this release.

Version 3.25.5 of protobuf still fixes CVE-2024-7254. This release is provided for users who aren't ready to update to 4.x, see also #4584 and #4634. Future versions of Error Prone will upgrade back to protobuf 4.x.

Full changelog: v2.35.0...v2.35.1

Error Prone 2.35.0

Changes:

• Fix handling of \s before the trailing delimiter in MisleadingEscapedSpace
• TimeUnitMismatch improvements: handle binary trees, consider trees like fooSeconds * 1000 to have units of millis

New checks:

• JavaDurationGetSecondsToToSeconds: Prefer duration.toSeconds() over duration.getSeconds()

Full changelog: v2.34.0...v2.35.0

Error Prone 2.34.0

Changes:

• Passing the javac flag --should-stop=ifError=FLOW is now required when running Error Prone (#4595)
• The MemberName check was renamed to IdentifierName

New checks:

• FutureTransformAsync: The usage of transformAsync is not necessary when all the return values of the transformation function are immediate futures.
• MisformattedTestData: Reformats Java source code inside Error Prone test cases.
• MisleadingEscapedSpace: Using \s anywhere except at the end of a line in a text block is potentially misleading.
• ThrowIfUncheckedKnownUnchecked: throwIfUnchecked(knownUnchecked) is equivalent to throw knownUnchecked.

Closed issues: #4595, #4598, #4620

Full changelog: v2.33.0...v2.34.0

Error Prone 2.33.0

Similar to release 2.32.0, the minimum supported JDK version to run Error Prone is JDK 17 (#3803). Using Error Prone to compile code that is deployed to earlier versions is still fully supported, but will require using JDK 17 or newer for compilation and setting --release or -source/-target/-bootclasspath.

Changes:

• Update protobuf version for CVE-2024-7254

New checks:

• ArrayRecordComponent: Record components should not be arrays.

Full changelog: v2.32.0...v2.33.0

Error Prone 2.32.0

The minimum support JDK version to run Error Prone is now JDK 17 (#3803).

Using Error Prone to compile code that is deployed to earlier versions is still fully supported, but will requires using JDK 17 or newer for compilation and setting --release or -source/-target/-bootclasspath.

Full changelog: v2.31.0...v2.32.0