libraries/

Add special case for array construction during Invoke.

src/libraries/System.Private.CoreLib/src/System/Reflection/RuntimeConstructorInfo.cs

@@ -158,14 +158,25 @@ public override object Invoke(BindingFlags invokeAttr, Binder? binder, object?[]
                 throw new TargetParameterCountException(SR.Arg_ParmCnt);
             }
 
+            // Array construction is a special case.
+            if (DeclaringType is not null && DeclaringType.IsArray)
+            {
+                Span<int> args = stackalloc int[actualCount];
+                for (int i = 0; i < actualCount; ++i)
+                {
+                    args[i] = (int)parameters![i]!;
+                }
+                return InvokeArrayCtorWorker(in args);
+            }
+
             StackAllocedArguments stackArgs = default;
             Span<object?> arguments = default;
             if (actualCount != 0)
             {
                 arguments = CheckArguments(ref stackArgs, parameters, binder, invokeAttr, culture, ArgumentTypes);
             }
 
-            object retValue = InvokeCtorWorker(invokeAttr, arguments);
+            object retValue = InvokeCtorWorker(invokeAttr, in arguments);
 
             // copy out. This should be made only if ByRef are present.
             // n.b. cannot use Span<T>.CopyTo, as parameters.GetType() might not actually be typeof(object[])