New Inspections in This Release

C#

Name	Description
Check .NET source code coverage	Reports methods, classes and files whose coverage is below a certain threshold.
Redundant 'partial' modifier on type declaration	Redundant 'partial' modifier on type declaration.
Redundant using directive	Redundant using directive.
Type member is never used (private accessibility)	Type member is never used (private accessibility).

CSS

Name	Description
W3C CSS validator	Reports a discrepancy detected by the W3C CSS Validator.

Cmake

Name	Description
Deprecated command used	Reports a usage of a deprecated command.
Mismatched command arguments	Reports mismatched arguments in opening- and closing commands.

Dockerfile

Name	Description
Heredoc as a last argument (destination) to ADD/COPY	Reports heredoc used as a last argument (destination) to ADD/COPY command.
Heredoc mismatched delimiters	Reports unclosed heredoc delimiters at the end of the file.

Gdscript

Name	Description
Classes	.
Local variables	.
Method validation	Validates the content of a method, supports the following checks method has a return type defined + quickfix method doesn't return when required method return type doesn't match its parent + quickfix unreachable code detection all code paths returning value detection constructor super validation.
Methods	.
Parameters	.
Problematic leading whitespace	.
Signals	.
Type mismatch	.

HCL

Name	Description
Conflicting properties	Reports conflicting properties in an HCL block.
Deprecated blocks/properties	Reports deprecated blocks or properties.
Duplicated output	Reports duplicate outputs.
Duplicated property	Reports duplicate properties inside one block.
Duplicated provider	Reports duplicate providers.
Duplicated variable	Reports duplicate variables.
HIL expression can be converted to HCL2	Reports old style HCL expressions and suggests converting them to HCL2 expressions.
Illegal interpolation	Reports illegal interpolations.
Incorrect .tfvars content	Reports errors in vars files.
Incorrect variable type	Reports incorrect variable type.
Invalid block names	Reports invalid block labels or incorrect number of labels according to the schema.
Invalid string and number literal	Reports string and number invalid literals.
Missing required property	Reports blocks with missing required properties.
Module directory isn't initialized	Reports if terraform was not initialized in the current working directory.
Suboptimal expression	Reports suboptimal HCL2 expressions and suggests simplifications.
Unknown block type	Reports blocks with an unknown type (first literal).
Unknown encryption key provider	Detects non-existing encryption key providers references in OpenTofu encryption block configuration.
Unknown encryption method	Detects non-existing encryption methods references in OpenTofu encryption block configuration.
Unknown property	Reports unknown properties in blocks.
Unknown resource type	Detects resources/datasources that cannot be resolved against known providers.
Unresolved module	Reports unresolved modules and suggests running terraform get to update the modules.
Unused elements	Reports unused variables, locals, and data sources in a Terraform module and provides a quick-fix to remove them.

HIL

Name	Description
Operation argument type mismatch	Reports operations incorrect argument types.
Unavailable scope	Reports usage of unavailable scopes, e.g.
Unknown resource types referenced	Reports unknown (non-used in module) resource type usage.

Http request

Name	Description
GRPC request schema can be substituted or omitted	Reports unnecessary `grpc` or standard `http[s]` schemes usage in gRPC requests.

JVM

Name	Description
ActionUpdateThread is missing	Reports actions, action groups and other ActionUpdateThreadAware classes that do not explicitly state their mode.
Component/Action not registered	Reports plugin components and actions that are not registered in a plugin.xml descriptor.
Extension class should be final and non-public	Reports extension classes that are non-final or public.
Extension registered as service/component	Reports extension implementation being additionally registered as a service/component.
Inspection description checker	Reports inspections that are missing an HTML description file, i.e.
Intention description checker	Reports intentions that are missing an HTML description file, before.template file or after.template file.
JComponent must use UiDataProvider	Reports JComponent classes implementing incorrect data provider interface.
Light service must be final	Reports classes annotated with the @com.intellij.openapi.components.Service annotation that are not final.
Listener implementation implements 'Disposable'	Reports listener implementations that implement com.intellij.openapi.Disposable.
Mismatch between light service level and its constructor	Reports mismatches between light service levels and its constructors.
Postfix template description checker	Reports postfix templates missing an HTML description file, before.template file or after.template file.

Java

Name	Description
Enhanced 'for' with a record pattern can be used	Reports local variable declarations and accessors to record components that can be replaced with pattern variables in enhanced `for` statements, which are usually more compact.
Injection annotation is not applicable	Reports when a @Language annotation is applied to an element with a type other than String or String[].
Java annotator	Allows viewing the problems reported by the Java annotator: compilation problems, unresolved by IDEA references, and so on.
Java sanity	Reports unresolved references in Java code.
Language mismatch	Reports when the language of a reference does not match the expected language of the usage context.
Non-annotated Method overrides @Pattern Method	Reports when a method without any @Pattern annotation overrides a @Pattern annotated method.
Pattern annotation is not applicable	Reports when a @Pattern annotation is applied to an element with a type other than String.
Unknown Language ID	Reports when the ID of the language used in a @Language annotation is unknown.
Using PsiElement string representation to generate new expression is incorrect	Reports direct usage of PsiElement and PsiType in strings.
Validate annotated patterns	Reports expressions passed as arguments for @Pattern parameters and returned from @Pattern-annotated methods that do not match the specified pattern.

Json

Name	Description
Unknown inspection id in meta information	Reports unknown inspection ids in metaInformation.json files.
Unreal Engine json inspection	RIDER-83134.

Kotlin

Name	Description
Companion object in extensions	Reports incorrect companion objects' usage in extensions.
Forbidden in suspend context method usage	Reports inappropriate usages of methods in Kotlin coroutines, which uses threading context (annotated with @RequiresBlockingContext).
Generate implementation	Reports absent of implementation for the entity.
Kotlin object registered as extension	Reports Kotlin objects that are registered as plugin extensions.
Kotlin sanity	Reports unresolved references in Kotlin code.
Obsolete version of entity implementation	Reports existence of the obsolete implementation for the entity.
OpenAPI documentation for current module is missing	Reports that there is no OpenAPI documentation for the current Ktor module.
Unsupported 'var' field in entity	Detects unsupported var fields in the inheritors of WorkspaceEntity interface Interface implementing WorkspaceEntity have to have only val fields because it's immutable.
Use 'com.intellij.util.io.ProcessKt.awaitExit()'	Reports usages of Process.waitFor() and Process.onExit() in coroutine context.

Msbuild

Name	Description
TargetFramework tag checks	RIDER-83136.

Multiple

PHP

Name	Description
Passing 'E_USER_ERROR' to 'trigger_error()' is deprecated since PHP 8.4	Reports passing a non-empty string as the $enclosure parameter of the CSV-related methods and functions: SplFileObject::setCsvControl() SplFileObject::fputcsv() SplFileObject::fgetcsv() fputcsv() fgetcsv() str_getcsv().
Vulnerabilities scanner	Call of this function may be unsafe.
Vulnerable paths scanner	Global taint analysis inspection.

Properties

Name	Description
Message format validation in properties files	Reports the following MessageFormat problems in property values: Unknown format types MessageFormat supports only these format types: number date time choice Other format types will be reported.

Python

Name	Description
Check Python source code coverage	Reports methods, classes and files whose coverage is below a certain threshold.
Type cast with impossible types	Reports calls to `typing.cast` where no possible value of the source type can be assignable to the target type.
Unnecessary type cast	Reports unnecessary calls to typing.cast when the expression already has the specified target type.
Unresolved columns	Reports attempts to access PySpark DataFrame columns that do not exist in the schema.

Requirements

Name	Description
Requirement is outdated	Reports packages mentioned in requirements files (for example, requirements.txt, or dependencies section in pyproject.toml files) which are outdated.

Rust

Name	Description
Ambiguous method call (experimental)	Reports ambiguous method calls (E0034).
Invalid macro definition	Reports errors in `macro_rules!` definitions.

Tftpl

Name	Description
No template data language selected	Reports Terraform Template files with no data language selected.

UAST

Name	Description
'UastHintedVisitorAdapter' hints problems	Reports missing or redundant hints in UastHintedVisitorAdapter creation.
A service can be converted to a light one	Reports classes that can be marked as light services using the @com.intellij.openapi.components.Service annotation instead of being registered as services in plugin.xml A service that is not intended for overriding is not required to be registered in the plugin.xml file.
Accessible context is missing	Reports Swing components that do not provide accessibility context.
Application service assigned to a static final field or immutable property	Reports assignments of application services to static final fields / immutable properties.
Calculate Kotlin and Java code metrics	Counts the number of code lines.
Calling method should be annotated with @RequiresBlockingContext	Highlights calls of method annotated with @RequiresBlockingMethod inside non-annotated method.
Cancellation check in loops	Reports loops, forEach-like methods, and ContainerUtil.process() with missing cancellation checks.
Cancellation exception handled incorrectly	Reports ProcessCanceledException and CancellationException handled incorrectly.
Check Kotlin and Java source code coverage	Reports methods and classes whose coverage is below a certain threshold.
Component type mismatch	Reports incorrect registration of plugin components (Actions and Components).
Eager creation of action presentation	Reports any actions that are registered in the plugin.xml file and instantiate the com.intellij.openapi.actionSystem.Presentation object in their constructors.
Field blocks intention preview	Reports fields in LocalQuickFix and IntentionAction implementations that prevent intention preview action from functioning properly.
File.equals() usage	Reports usages of java.io.File.equals()/hashCode()/compareTo() methods.
Incorrect parentDisposable parameter	Reports using Application or Project as a parent Disposable in plugin code.
Incorrect service retrieving	Reports the following problems when retrieving services: Attempts to retrieve an unregistered service.
Invalid icon path in @Presentation	Reports invalid and deprecated value for icon attribute in com.intellij.ide.presentation.Presentation annotation.
Map key may leak	Reports using Language or FileType as a map key in plugin code.
Migrate to getOptionPane()	Reports createOptionsPanel() methods in inspection implementation, which can be automatically converted to getOptionsPane().
Non-default constructor in serializable class	Reports non-default constructor in serializable classes.
Non-default constructors for service and extension class	Reports extension/service class having a non-default (empty) constructor.
Non-platform TokenSet declared in ParserDefinition	Reports TokenSet field declarations referencing non-platform element types in ParserDefinition classes.
Potential deadlock in service initialization	Reports read/write actions and invokeAndWait called from the scope of service initialization: service constructors and initialization blocks (including static) service companion object's initialization blocks (Kotlin) service methods used in initialization blocks and fields initialization PersistentStateComponent initialization lifecycle methods: loadState noStateLoaded initializeComponent Running a read/write action or calling invokeAndWait during service initialization may cause deadlocks.
QuickFix's getFamilyName() implementation must not depend on a specific context	Reports QuickFix.getFamilyName() using contextual information.
Simplifiable service retrieving	Reports service getting calls that can be replaced with a calls to an existing static getInstance() or getInstance(Project) methods.
Stateful extension	Reports extensions and quick-fixes holding potentially leaking state.
Static initialization in extension point implementations	Reports static initialization in extension point implementations.
Threading and concurrency problems	Reports threading and concurrency issues in code using information from com.intellij.util.concurrency.annotations annotations.
UElement as PsiElement usage	Reports usage of UAST UElement as PsiElement.
Undesirable class usage	Reports usages of undesirable classes (mostly Swing components).
Unresolved plugin configuration reference	Reports unresolved references to plugin configuration elements.
Unsafe return statements visitor	Reports unsafe use of JavaRecursiveElementVisitor.visitReturnStatement().
Unsafe VFS recursion	Reports usage of VirtualFile.getChildren() inside recursive methods.
Unspecified action place	Reports passing unspecified place parameter for ActionManager.createActionToolbar() and ActionManager.createActionPopupMenu().
Usage of IntelliJ API not available in older IDEs	Reports usages of IntelliJ Platform API introduced in a version newer than the one specified in <idea-version> @since-build in plugin.xml.
Use 'PluginId#equals(Object)'	Reports comparing PluginId instances using ==.
Use 'PsiType#equals(Object)' with primitive types	Reports comparing PsiPrimitiveType instances using ==.
Use 'VirtualFile#equals(Object)'	Reports comparing VirtualFile instances using ==.
Use Darcula aware JBColor	Reports usages of java.awt.Color.
Use DPI-aware borders	Reports usages of javax.swing.border.EmptyBorder and JBUI.Borders.emptyXyz() that can be simplified.
Use DPI-aware insets	Reports usages of java.awt.Insets and JBUI.insetsXyz() that can be simplified.
Using new Color(a,a,a)	Reports usages of java.awt.Color to create gray colors.

XML

Name	Description
Extension class is a Kotlin object	Reports extensions which are instantiated by the IntelliJ Platform, but are declared as Kotlin objects.
Live templates i18n	Reports hardcoded text in live template description.
Phing inspection	Reports unresolved resource references in Phing build files.
Plugin Logo check	Reports missing plugin logo.
Plugin.xml dynamic plugin verification	Reports dynamic plugin problems.
Plugin.xml extension registration	Reports problems with extension registration in plugin.xml.
Plugin.xml i18n verification	Reports hardcoded texts in plugin.xml.
Plugin.xml text capitalization	Reports text capitalization problems in plugin.xml.
Plugin.xml validity	Reports problems in plugin.xml.

Go

Name	Description
Check GO source code coverage	Reports methods and files whose coverage is below a certain threshold.

Last modified: 18 September 2025

Name	Description
The parameter expects a constant for optimal performance	The parameter expects a constant for optimal performance.
#warning directive	#warning directive.
'#warning' directive	'#warning' directive.
'?:' expression has identical true and false branches	'?:' expression has identical true and false branches.
'??' condition is known to be null or not null	'??' condition is known to be null or not null.
'??' condition is never null according to nullable reference types' annotations	'??' condition is never null according to nullable reference types' annotations.
'attribute modifier' is not a recognized attribute location. All attributes in this block will be ignored	'attribute modifier' is not a recognized attribute location.
'attribute modifier' is not a valid attribute location for this declaration. All attributes in this block will be ignored	'attribute modifier' is not a valid attribute location for this declaration.
'Banana in a box' [()] violation in Angular 2 binding	'Banana in a box' [()] violation in Angular 2 binding.
'Camera.main' is expensive	'Camera.main' is expensive.
'contains' member function can be used	'contains' member function can be used.
'ContainsKey' call is redundant before adding the item to the dictionary	'ContainsKey' call is redundant before adding the item to the dictionary.
'DefaultParameterValueAttribute' must be used in conjunction with 'OptionalAttribute'	'DefaultParameterValueAttribute' must be used in conjunction with 'OptionalAttribute'.
'Enumerable.Sum' invocation in explicit unchecked context	'Enumerable.Sum' invocation in explicit unchecked context.
'GC.SuppressFinalize' is invoked for type without destructor	'GC.SuppressFinalize' is invoked for type without destructor.
'goto case' value is not implicitly convertible to required type	'goto case' value is not implicitly convertible to required type.
'if' can be replaced by 'if consteval'	'if' can be replaced by 'if consteval'.
'if' expression can be replaced with its condition	'if' expression can be replaced with its condition.
'if' statement can be rewritten as '?:' expression	'if' statement can be rewritten as '?:' expression.
'if' statement can be rewritten as '??' expression	'if' statement can be rewritten as '??' expression.
'if' statement can be rewritten as '??=' assignment	'if' statement can be rewritten as '??=' assignment.
'if-return' statement can be rewritten as 'return' statement	'if-return' statement can be rewritten as 'return' statement.
'Inline arrays' language feature is not supported for inline array types with element field which is either a 'ref' field, or has type that is not valid as a type argument.	'Inline arrays' language feature is not supported for inline array types with element field which is either a 'ref' field, or has type that is not valid as a type argument.
'long' floats are not allowed by the C++ standard	'long' floats are not allowed by the C++ standard.
'MonoBehaviour' instances must be instantiated with 'GameObject.AddComponent<T>()' instead of 'new'	'MonoBehaviour' instances must be instantiated with 'GameObject.AddComponent<T>()' instead of 'new'.
'Object.ReferenceEquals' is always false because it is called with value type	'Object.ReferenceEquals' is always false because it is called with value type.
'out' parameter is not assigned upon exit	'out' parameter is not assigned upon exit.
'params' modifier is always ignored on overrides	'params' modifier is always ignored on overrides.
'ref' or 'out' parameter with [Optional] attribute	'ref' or 'out' parameter with [Optional] attribute.
'ScriptableObject' instances must be instantiated with 'ScriptableObject.CreateInstance<T>()' instead of 'new'	'ScriptableObject' instances must be instantiated with 'ScriptableObject.CreateInstance<T>()' instead of 'new'.
'std::erase'/'std::erase_if' can be used instead of the remove-erase idiom	'std::erase'/'std::erase_if' can be used instead of the remove-erase idiom.
'std::is_constant_evaluated' will always evaluate to constant	'std::is_constant_evaluated' will always evaluate to constant.
'true' is redundant as 'for'-statement condition	'true' is redundant as 'for'-statement condition.
'value' parameter is not used	'value' parameter is not used.
'void' method is annotated with the [MustDisposeResource] attribute	'void' method is annotated with the [MustDisposeResource] attribute.
'void' method is annotated with the [MustUseReturnValue] attribute	'void' method is annotated with the [MustUseReturnValue] attribute.
'void' method is annotated with the [Pure] attribute	'void' method is annotated with the [Pure] attribute.
'with' expression is used instead of object initializer	'with' expression is used instead of object initializer.
'with' expression modifies all accessible instance members	'with' expression modifies all accessible instance members.
[[nodiscard]] cannot be applied to functions without a return value	[[nodiscard]] cannot be applied to functions without a return value.