public static unsafe void TestByRefLikeRefReturn()
{
ByRefLike brl = new ByRefLike();
ByRefLike *pBrl = &brl;
MethodInfo mi = typeof(TestClass <int>).GetMethod(nameof(TestClass <int> .ByRefLikeRefReturningMethod));
try
{
// Don't use Assert.Throws because that will make a lambda and invalidate the pointer
object o = mi.Invoke(null, new object[] { Pointer.Box(pBrl, typeof(ByRefLike *)) });
// If this is reached, it means `o` is a boxed byref-like type. That's a GC hole right there.
throw new Xunit.Sdk.XunitException("Boxed a byref-like type.");
}
catch (NotSupportedException)
{
// We expect a NotSupportedException from the Invoke call. Methods returning byref-like types by reference
// are not reflection invokable.
}
}
public static void Run()
{
Console.WriteLine(nameof(TestByRefLikeTypeMethod));
// Ensure things we reflect on are in the static callgraph
if (string.Empty.Length > 0)
{
default(ByRefLike).ToString();
ToStringDelegate s = null;
s = s.Invoke;
}
Type byRefLikeType = GetTestType(nameof(TestByRefLikeTypeMethod), nameof(ByRefLike));
MethodInfo toStringMethod = byRefLikeType.GetMethod("ToString");
var toString = (ToStringDelegate)toStringMethod.CreateDelegate(typeof(ToStringDelegate));
ByRefLike foo = new ByRefLike(123);
if (toString(ref foo) != "123")
{
throw new Exception();
}
}