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feat(extractor): borrow checker — pooled-buffer Span view used after Return → OWN002 (POOL002) #400

feat(extractor): borrow checker — pooled-buffer Span view used after Return → OWN002 (POOL002)

feat(extractor): borrow checker — pooled-buffer Span view used after Return → OWN002 (POOL002) #400

Triggered via pull request June 21, 2026 16:31
Status Success
Total duration 1m 38s
Artifacts

ci.yml

on: pull_request
lint (ruff + mypy --strict)
12s
lint (ruff + mypy --strict)
extended codegen fuzz
34s
extended codegen fuzz
golden C# compiles & runs (.NET)
30s
golden C# compiles & runs (.NET)
C# leak extractor (Roslyn) -> OwnIR -> core
37s
C# leak extractor (Roslyn) -> OwnIR -> core
own-check repo scan (github + msbuild) + composite action
51s
own-check repo scan (github + msbuild) + composite action
own-check SARIF -> GitHub code scanning (dog-food)
28s
own-check SARIF -> GitHub code scanning (dog-food)
corpus benchmark (real C# recall + specificity)
1m 35s
corpus benchmark (real C# recall + specificity)
Matrix: tests
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Annotations

20 errors and 41 warnings
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/FlowLocalsSample.cs#L90
IDisposable local 'forLeak' is never disposed (leak)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/FlowLocalsSample.cs#L78
IDisposable local 'foreachLeak' is never disposed (leak)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/FlowLocalsSample.cs#L67
IDisposable local 'whileLeak' is never disposed (leak)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/FlowLocalsSample.cs#L27
IDisposable local 'leak' may not be disposed on every path (leak)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/FlowLocalsSample.cs#L18
IDisposable local 'uad' is used after it is disposed
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/DisposableFieldViewModel.cs#L10
IDisposable field '_cts' (type 'CancellationTokenSource') is never disposed — its owner 'ReportViewModel' leaks it (leak)
own-check repo scan (github + msbuild) + composite action
singleton 'PrimaryCtorService' captures scoped service 'AppDbContext' (captive dependency: PrimaryCtorService -> AppDbContext)
own-check repo scan (github + msbuild) + composite action
singleton 'CacheService' captures scoped service 'IRepo' (captive dependency: CacheService -> IRepo)
own-check repo scan (github + msbuild) + composite action
singleton 'EmailSender' captures scoped service 'AppDbContext' (captive dependency: EmailSender -> AppDbContext)
OWN001: frontend/roslyn/samples/FlowLocalsSample.cs#L90
[OWN001] IDisposable local 'forLeak' is never disposed (leak) [resource: disposable]
OWN001: frontend/roslyn/samples/FlowLocalsSample.cs#L78
[OWN001] IDisposable local 'foreachLeak' is never disposed (leak) [resource: disposable]
OWN001: frontend/roslyn/samples/FlowLocalsSample.cs#L67
[OWN001] IDisposable local 'whileLeak' is never disposed (leak) [resource: disposable]
OWN003: frontend/roslyn/samples/FlowLocalsSample.cs#L37
[OWN003] IDisposable local 'dbl' is disposed more than once [resource: disposable]
OWN001: frontend/roslyn/samples/FlowLocalsSample.cs#L27
[OWN001] IDisposable local 'leak' may not be disposed on every path (leak) [resource: disposable]
OWN002: frontend/roslyn/samples/FlowLocalsSample.cs#L18
[OWN002] IDisposable local 'uad' is used after it is disposed [resource: disposable]
OWN001: frontend/roslyn/samples/DisposableFieldViewModel.cs#L10
[OWN001] IDisposable field '_cts' (type 'CancellationTokenSource') is never disposed — its owner 'ReportViewModel' leaks it (leak) [resource: disposable field]
DI001: frontend/roslyn/samples/DiCaptiveSample.cs#L160
[DI001] singleton 'PrimaryCtorService' captures scoped service 'AppDbContext' (captive dependency: PrimaryCtorService -> AppDbContext) [consumed by the 'PrimaryCtorService' constructor at frontend/roslyn/samples/DiCaptiveSample.cs:33] [resource: DI lifetime]
DI001: frontend/roslyn/samples/DiCaptiveSample.cs#L157
[DI001] singleton 'CacheService' captures scoped service 'IRepo' (captive dependency: CacheService -> IRepo) [consumed by the 'CacheService' constructor at frontend/roslyn/samples/DiCaptiveSample.cs:28] [resource: DI lifetime]
DI001: frontend/roslyn/samples/DiCaptiveSample.cs#L149
[DI001] singleton 'EmailSender' captures scoped service 'AppDbContext' (captive dependency: EmailSender -> AppDbContext) [consumed by the 'EmailSender' constructor at frontend/roslyn/samples/DiCaptiveSample.cs:25] [resource: DI lifetime]
tests (py3.12)
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
tests (py3.13)
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
tests (py3.11)
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
lint (ruff + mypy --strict)
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
golden C# compiles & runs (.NET)
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
own-check SARIF -> GitHub code scanning (dog-food)
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
own-check SARIF -> GitHub code scanning (dog-food): frontend/roslyn/OwnSharp.Extractor/Program.cs#L1411
Argument of type 'IEnumerable<string?>' cannot be used for parameter 'collection' of type 'IEnumerable<string>' in 'HashSet<string>.HashSet(IEnumerable<string> collection, IEqualityComparer<string>? comparer)' due to differences in the nullability of reference types.
extended codegen fuzz
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
C# leak extractor (Roslyn) -> OwnIR -> core
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
C# leak extractor (Roslyn) -> OwnIR -> core: frontend/roslyn/OwnSharp.Extractor/Program.cs#L1411
Argument of type 'IEnumerable<string?>' cannot be used for parameter 'collection' of type 'IEnumerable<string>' in 'HashSet<string>.HashSet(IEnumerable<string> collection, IEqualityComparer<string>? comparer)' due to differences in the nullability of reference types.
own-check repo scan (github + msbuild) + composite action
singleton 'WeakCache' weakly captures scoped service 'AppDbContext' (WeakReference): 'AppDbContext' is still resolved from the root provider and promoted to application lifetime — the weak reference avoids pinning it for the GC but does not fix the captive-dependency lifetime violation (WeakCache -> AppDbContext)
own-check repo scan (github + msbuild) + composite action
singleton 'ConnectionWarmer' captures transient IDisposable 'PooledConnection': it is promoted to application lifetime and disposed only when the root provider is disposed (ConnectionWarmer -> PooledConnection)
own-check repo scan (github + msbuild) + composite action
singleton 'PrimaryCtorService' captures scoped service 'AppDbContext' (captive dependency: PrimaryCtorService -> AppDbContext)
own-check repo scan (github + msbuild) + composite action
singleton 'CacheService' captures scoped service 'IRepo' (captive dependency: CacheService -> IRepo)
own-check repo scan (github + msbuild) + composite action
singleton 'EmailSender' captures scoped service 'AppDbContext' (captive dependency: EmailSender -> AppDbContext)
own-check repo scan (github + msbuild) + composite action
singleton 'WrapperResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (WrapperResolver -> MidConnection -> PooledConnection)
own-check repo scan (github + msbuild) + composite action
singleton 'ExprBodiedResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (ExprBodiedResolver -> PooledConnection)
own-check repo scan (github + msbuild) + composite action
singleton 'ConnectionResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (ConnectionResolver -> PooledConnection)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/CustomerViewModel.cs#L15
event 'bus.CustomerChanged' is subscribed (handler 'OnCustomerChanged') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'CustomerViewModel' alive (possible leak)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/AliasedSourceViewModel.cs#L23
event 'src.CustomerChanged' is subscribed (handler 'OnAliased') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'AliasedSourceViewModel' alive (possible leak)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/LambdaHandlerViewModel.cs#L21
event 'bus.CustomerChanged' is subscribed (handler '(s, e) => _count++') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'LambdaHandlerViewModel' alive (possible leak — and being an inline lambda it has no '-=' handle, so it could never be detached)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/ExternalRefSubscription.cs#L20
event '_bus.Changed' is subscribed (handler 'OnChanged') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'ExternalRefSubscription' alive (possible leak)
own-check repo scan (github + msbuild) + composite action
singleton 'WeakCacheOpt' weakly captures scoped service 'AppDbContext' (WeakReference): 'AppDbContext' is still resolved from the root provider and promoted to application lifetime — the weak reference avoids pinning it for the GC but does not fix the captive-dependency lifetime violation (WeakCacheOpt -> AppDbContext)
own-check repo scan (github + msbuild) + composite action
singleton 'WeakCache' weakly captures scoped service 'AppDbContext' (WeakReference): 'AppDbContext' is still resolved from the root provider and promoted to application lifetime — the weak reference avoids pinning it for the GC but does not fix the captive-dependency lifetime violation (WeakCache -> AppDbContext)
own-check repo scan (github + msbuild) + composite action
singleton 'ConnectionWarmer' captures transient IDisposable 'PooledConnection': it is promoted to application lifetime and disposed only when the root provider is disposed (ConnectionWarmer -> PooledConnection)
own-check repo scan (github + msbuild) + composite action
singleton 'WrapperResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (WrapperResolver -> MidConnection -> PooledConnection)
own-check repo scan (github + msbuild) + composite action
singleton 'ExprBodiedResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (ExprBodiedResolver -> PooledConnection)
own-check repo scan (github + msbuild) + composite action
singleton 'ConnectionResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (ConnectionResolver -> PooledConnection)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/CustomerViewModel.cs#L15
event 'bus.CustomerChanged' is subscribed (handler 'OnCustomerChanged') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'CustomerViewModel' alive (possible leak)
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/samples/AliasedSourceViewModel.cs#L23
event 'src.CustomerChanged' is subscribed (handler 'OnAliased') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'AliasedSourceViewModel' alive (possible leak)
OWN001: frontend/roslyn/samples/ExternalRefSubscription.cs#L20
[OWN001] event '_bus.Changed' is subscribed (handler 'OnChanged') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'ExternalRefSubscription' alive (possible leak) [resource: subscription token]
DI002: frontend/roslyn/samples/DiCaptiveSample.cs#L182
[DI002] singleton 'WeakCacheOpt' weakly captures scoped service 'AppDbContext' (WeakReference): 'AppDbContext' is still resolved from the root provider and promoted to application lifetime — the weak reference avoids pinning it for the GC but does not fix the captive-dependency lifetime violation (WeakCacheOpt -> AppDbContext) [consumed by the 'WeakCacheOpt' constructor at frontend/roslyn/samples/DiCaptiveSample.cs:60] [resource: DI lifetime]
DI002: frontend/roslyn/samples/DiCaptiveSample.cs#L179
[DI002] singleton 'WeakCache' weakly captures scoped service 'AppDbContext' (WeakReference): 'AppDbContext' is still resolved from the root provider and promoted to application lifetime — the weak reference avoids pinning it for the GC but does not fix the captive-dependency lifetime violation (WeakCache -> AppDbContext) [consumed by the 'WeakCache' constructor at frontend/roslyn/samples/DiCaptiveSample.cs:57] [resource: DI lifetime]
DI003: frontend/roslyn/samples/DiCaptiveSample.cs#L173
[DI003] singleton 'ConnectionWarmer' captures transient IDisposable 'PooledConnection': it is promoted to application lifetime and disposed only when the root provider is disposed (ConnectionWarmer -> PooledConnection) [consumed by the 'ConnectionWarmer' constructor at frontend/roslyn/samples/DiCaptiveSample.cs:50] [resource: DI lifetime]
DI004: frontend/roslyn/samples/DiCaptiveSample.cs#L137
[DI004] singleton 'WrapperResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (WrapperResolver -> MidConnection -> PooledConnection) [singleton registered at frontend/roslyn/samples/DiCaptiveSample.cs:205] [resource: DI lifetime]
DI004: frontend/roslyn/samples/DiCaptiveSample.cs#L123
[DI004] singleton 'ExprBodiedResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (ExprBodiedResolver -> PooledConnection) [singleton registered at frontend/roslyn/samples/DiCaptiveSample.cs:201] [resource: DI lifetime]
DI004: frontend/roslyn/samples/DiCaptiveSample.cs#L79
[DI004] singleton 'ConnectionResolver' resolves transient IDisposable 'PooledConnection' by hand from its injected root IServiceProvider (GetService/GetRequiredService — the service-locator anti-pattern): the root provider tracks every IDisposable it resolves and frees them only at application shutdown, so each call leaks a transient that should be scope-lived — resolve it from an IServiceScope instead (ConnectionResolver -> PooledConnection) [singleton registered at frontend/roslyn/samples/DiCaptiveSample.cs:192] [resource: DI lifetime]
OWN001: frontend/roslyn/samples/CustomerViewModel.cs#L15
[OWN001] event 'bus.CustomerChanged' is subscribed (handler 'OnCustomerChanged') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'CustomerViewModel' alive (possible leak) [resource: subscription token]
OWN001: frontend/roslyn/samples/AliasedSourceViewModel.cs#L23
[OWN001] event 'src.CustomerChanged' is subscribed (handler 'OnAliased') but never unsubscribed; its source is an injected dependency whose lifetime is unknown, so it may outlive and keep 'AliasedSourceViewModel' alive (possible leak) [resource: subscription token]
own-check repo scan (github + msbuild) + composite action: frontend/roslyn/OwnSharp.Extractor/Program.cs#L1411
Argument of type 'IEnumerable<string?>' cannot be used for parameter 'collection' of type 'IEnumerable<string>' in 'HashSet<string>.HashSet(IEnumerable<string> collection, IEqualityComparer<string>? comparer)' due to differences in the nullability of reference types.
corpus benchmark (real C# recall + specificity)
Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/