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Compiler Error CS8150

By-value returns may only be used in methods that return by value

Example

The following sample generates CS8150:

// CS8150.cs (6,9)

class C
{
    ref int M()
    {
        return new();
    }
}

To correct this error

To return by value, refactor the method from being by reference. For example:

// CS8150.cs (6,9)

class C
{
    int M()
    {
        return new();
    }
}