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invalidFunctionPointerInDelegate MDA

.NET Framework 4.5

.NET Framework 4
.NET Framework 3.0
.NET Framework 3.5
.NET Framework 2.0

The invalidFunctionPointerInDelegate managed debugging assistant (MDA) is activated when an invalid function pointer is passed in to construct a delegate over a native function pointer.

Symptoms

Access violations or unexpected memory corruption when using a delegate over a function pointer.

Cause

An invalid function pointer was specified.

Resolution

Specify a valid function pointer

Effect on the Runtime

This MDA has no effect on the CLR.

Output

The invalid function pointer.

Configuration

<mdaConfig>
  <assistants>
    <invalidFunctionPointerInDelegate enable="false" />
  </assistants>
</mdaConfig>

Reference

MarshalAsAttribute

Concepts

Diagnosing Errors with Managed Debugging Assistants

Other Resources

Interop Marshaling

Interoperability

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