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C#

C# static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your C# code

  • All rules 493
  • Vulnerability46
  • Bug88
  • Security Hotspot24
  • Code Smell335

  • Quick Fix 61
Filtered: 11 rules found
multi-threading
    Impact
      Clean code attribute
        1. Blocks should not be synchronized on local variables

           Bug
        2. Threads should not lock on objects with weak identity

           Code Smell
        3. "Thread.Resume" and "Thread.Suspend" should not be used

           Bug
        4. "this" should not be exposed from constructors

           Code Smell
        5. "ConfigureAwait(false)" should be used

           Code Smell
        6. "async" methods should not return "void"

           Bug
        7. "ThreadStatic" fields should not be initialized

           Bug
        8. Instance members should not write to "static" fields

           Code Smell
        9. Shared resources should not be used for locking

           Bug
        10. Blocks should be synchronized on read-only fields

           Bug
        11. Locks should be released on all paths

           Bug

        Instance members should not write to "static" fields

        intentionality - complete
        maintainability
        Code Smell
        • multi-threading

        This rule raises an issue each time a static field is updated from a non-static method or property.

        Why is this an issue?

        More Info

        Updating a static field from a non-static method introduces significant challenges and potential bugs. Multiple class instances and threads can access and modify the static field concurrently, leading to unintended consequences for other instances or threads (unexpected behavior, race conditions and synchronization problems).

        class MyClass
        {
          private static int count = 0;
        
          public void DoSomething()
          {
            //...
            count++;  // Noncompliant: make the enclosing instance property 'static' or remove this set on the 'static' field.
          }
        }
        
        interface MyInterface
        {
          private static int count = 0;
        
          public void DoSomething()
          {
            //...
            count++;  // Noncompliant: remove this set, which updates a 'static' field from an instance method.
          }
        }
        
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