From 1bd96d89adce5f7e265c56ca757aebd31bee1d77 Mon Sep 17 00:00:00 2001
From: Daniel Cazzulino <daniel@cazzulino.com>
Date: Sun, 4 Oct 2026 12:06:24 -0300
Subject: [PATCH] Name the non-array default argument.

---
 src/Stunts/DefaultValueProvider.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Stunts/DefaultValueProvider.cs b/src/Stunts/DefaultValueProvider.cs
index afc5abe..781e1c8 100644
--- a/src/Stunts/DefaultValueProvider.cs
+++ b/src/Stunts/DefaultValueProvider.cs
@@ -204,7 +204,8 @@ public GeneratedDefault(Func<DefaultValueProvider, object?> create, Func<object?
 
         [RequiresDynamicCode("Array defaults require the element type's array instantiation. Register a typed factory for Native AOT.")]
         static object CreateArray(Type type) => Array.CreateInstance(
-            type.GetElementType() ?? throw new ArgumentException(nameof(type)), new int[type.GetArrayRank()]);
+            type.GetElementType() ?? throw new ArgumentException("Type must be an array type.", nameof(type)),
+            new int[type.GetArrayRank()]);
 
         static object CreateEnumerable(Type type) => Enumerable.Empty<object>();