Fix #20595 - automatically unittest destroy(T.init)

druntime/src/object.d

@@ -3781,6 +3781,22 @@ template RTInfo(T)
         enum RTInfo = rtinfoNoPointers;
     else
         enum RTInfo = RTInfoImpl!(pointerBitmap).ptr;
+
+    static if (is (T == struct) && is(typeof(T.init) == T))
+    {
+        /// Verify that `destroy` works with `T.init`.
+        /// TODO: explain why
+        /// TODO: move the `hasElaborateDestructor` out of the `unittest`
+        unittest
+        {
+            import core.internal.traits : hasElaborateDestructor;
+            static if (hasElaborateDestructor!T)
+            {
+                T t = T.init;
+                .destroy!(true, T)(t);
+            }
+        }
+    }
 }
 
 /**