allowReflectiveAutoCloneType must work outside of Builder context (#1811)

2 files changed, 10 insertions, 2 deletions

diff --git a/core/src/main/scala/chisel3/internal/Builder.scala b/core/src/main/scala/chisel3/internal/Builder.scala
index b1016a2e..084bdc88 100644
--- a/core/src/main/scala/chisel3/internal/Builder.scala
+++ b/core/src/main/scala/chisel3/internal/Builder.scala
@@ -532,8 +532,12 @@ private[chisel3] object Builder extends LazyLogging {
     dynamicContext.currentReset = newReset
   }
 
-  // This should only be used for testing
-  def allowReflectiveAutoCloneType: Boolean = dynamicContext.allowReflectiveAutoCloneType
+  // This should only be used for testing, must be true outside of Builder context
+  def allowReflectiveAutoCloneType: Boolean = {
+    dynamicContextVar.value
+                     .map(_.allowReflectiveAutoCloneType)
+                     .getOrElse(true)
+  }
   def allowReflectiveAutoCloneType_=(value: Boolean): Unit = {
     dynamicContext.allowReflectiveAutoCloneType = value
   }
diff --git a/src/test/scala/chiselTests/AutoClonetypeSpec.scala b/src/test/scala/chiselTests/AutoClonetypeSpec.scala
index a6e5562a..e0e6b2f0 100644
--- a/src/test/scala/chiselTests/AutoClonetypeSpec.scala
+++ b/src/test/scala/chiselTests/AutoClonetypeSpec.scala
@@ -127,6 +127,10 @@ class AutoClonetypeSpec extends ChiselFlatSpec with Utils {
     } }
   }
 
+  "Autoclonetype" should "work outside of a builder context" in {
+    new BundleWithIntArg(8).cloneType
+  }
+
   def checkSubBundleInvalid() = {
     elaborate { new Module {
       val io = IO(new Bundle{}).suggestName("io")