refactor: clarify error msg. for de-allocated ResourceAny

crates/wasmtime/src/runtime/component/resources/host_tables.rs

@@ -177,7 +177,7 @@ impl<'a> HostResourceTables<'a> {
         // precise error, such as a lift operation.
         if let Some(actual) = actual {
             if actual.generation != idx.generation() {
-                bail!("host-owned resource is being used with the wrong type");
+                bail!("host-owned resource was already de-allocated");
             }
         }
 

tests/all/component_model/resources.rs

@@ -187,7 +187,27 @@ fn resource_any() -> Result<()> {
         // reuse of `t` should fail, despite it pointing to a valid resource
         assert_eq!(
             t_dtor.call(&mut store, (t,)).unwrap_err().to_string(),
-            "host-owned resource is being used with the wrong type"
+            "host-owned resource was already de-allocated"
+        );
+    }
+
+    {
+        let mut store = Store::new(&engine, ());
+        let i = linker.instantiate(&mut store, &c)?;
+        let t_ctor = i.get_typed_func::<(u32,), (ResourceAny,)>(&mut store, "[constructor]t")?;
+        let t_dtor = i.get_typed_func::<(ResourceAny,), ()>(&mut store, "drop-t")?;
+
+        // `t0` is placed at host index 0
+        let (t0,) = t_ctor.call(&mut store, (100,))?;
+        t_dtor.call(&mut store, (t0,))?;
+
+        // `t1` is also placed at host index 0 since `t0` was deallocated
+        let (_t1,) = t_ctor.call(&mut store, (100,))?;
+
+        // reuse of `t0` should fail, despite it pointing to a valid resource
+        assert_eq!(
+            t_dtor.call(&mut store, (t0,)).unwrap_err().to_string(),
+            "host-owned resource was already de-allocated"
         );
     }