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Compiler Error C3749

  • Article

'attribute': a custom attribute may not be used inside a function

A custom attribute cannot be used inside a function. For more information on custom attributes, see the topic attribute.

Example

The following sample generates C3749:

// C3749a.cpp
// compile with: /clr /c
using namespace System;

[AttributeUsage(AttributeTargets::All)]
public ref struct ABC : public Attribute {
   ABC() {}
};

void f1() { [ABC]; };  // C3749