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Compiler Warning (level 3) C4638
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Compiler Warning (level 3) C4638

Error Message

XML document comment target: reference to unknown symbol 'symbol'

The compiler was unable to resolve a symbol (symbol). The symbol must be valid in the compilation.

The following sample generates C4638:

// C4638.cpp
// compile with: /clr /doc /LD /W3
using namespace System;

/// Text for class MyClass.
public ref class MyClass { 
public:
   /// <summary> Text </summary>
   /// <see cref="aSymbolThatAppearsNowhereInMyProject"/>
   // Try the following line instead:
   // /// <see cref="System::Console::WriteLine"/>
   void MyMethod() {}
};   // C4638

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