When creating a delegate with a function that does not match the funcdef's signature, the error message given does not refer to the function name, but rather to the funcdef name:

funcdef void Foo();

class Bar
{
	bool Callback()
	{
		return true;
	}
}

Bar bar;

Foo@ pCallback = Foo( bar.Callback );

This gives the following error message:

No matching signatures to 'void Foo()'

This can be rather confusing.