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-rw-r--r--src/test/scala/chiselTests/Stack.scala5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/test/scala/chiselTests/Stack.scala b/src/test/scala/chiselTests/Stack.scala
index ac799c8a..0ce228de 100644
--- a/src/test/scala/chiselTests/Stack.scala
+++ b/src/test/scala/chiselTests/Stack.scala
@@ -1,8 +1,11 @@
// See LICENSE for license details.
package chiselTests
+
import scala.collection.mutable.Stack
-import Chisel._
+
+import chisel._
+import chisel.util._
class ChiselStack(val depth: Int) extends Module {
val io = new Bundle {