PH2133.md

PH2133: Unmanaged objects need disposing

Property	Value
Package	Philips.CodeAnalysis.MaintainabilityAnalyzers
Diagnostic ID	PH2133
Category	RuntimeFailure
Analyzer	UnmanagedObjectsNeedDisposingAnalyzer
CodeFix	No
Severity	Error
Enabled By Default	Yes

Introduction

Every class that holds fields that reference unmanaged objects, should implement IDisposable. This to ensure the unmanaged objects are freed properly when finalizing the .NET class.

How to solve

Implement IDisposable and adhere to the dispose guidelines stated on MS Learn

Example

Code that triggers a diagnostic:

public class BadExample {
  private IntPtr pointer;
}

And the replacement code:

public sealed class GoodExample : IDisposable {
  private IntPtr pointer;
  
  public void Dispose() {
    Free(pointer);
  }
}

Configuration

This analyzer does not offer any special configuration. The general ways of suppressing diagnostics apply.