From c3b06d773f1fabd2519d6c705d68381d13f1c07f Mon Sep 17 00:00:00 2001
From: Zachary Yedidia
Date: Tue, 23 Aug 2022 17:20:12 -0700
Subject: Backport .toTarget deprecation warning information (3.5.x) (#2697)

---
 src/test/scala/chiselTests/ToTargetSpec.scala | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/test/scala/chiselTests/ToTargetSpec.scala')

diff --git a/src/test/scala/chiselTests/ToTargetSpec.scala b/src/test/scala/chiselTests/ToTargetSpec.scala
index dc4ec448..de46cdcb 100644
--- a/src/test/scala/chiselTests/ToTargetSpec.scala
+++ b/src/test/scala/chiselTests/ToTargetSpec.scala
@@ -49,4 +49,21 @@ class ToTargetSpec extends ChiselFlatSpec with Utils {
     val q = m.q.toTarget.toString
     assert(q == s"~$mn|Queue")
   }
+
+  it should "warn on non-hardware types and provide information" in {
+    class Example extends Module {
+      val tpe = UInt(8.W)
+
+      val in = IO(Input(tpe))
+      val out = IO(Output(tpe))
+      out := in
+    }
+
+    var e: Example = null
+    chisel3.stage.ChiselStage.elaborate { e = new Example; e }
+    val (log, foo) = grabLog(e.tpe.toTarget)
+    log should include(
+      "Accessing the .instanceName or .toTarget of non-hardware Data is deprecated: 'tpe', in module 'Example'"
+    )
+  }
 }
-- 
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