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-rw-r--r--src/main/scala/chisel3/testers/BasicTester.scala2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/scala/chisel3/testers/BasicTester.scala b/src/main/scala/chisel3/testers/BasicTester.scala
index 6d1a4913..7bb441ba 100644
--- a/src/main/scala/chisel3/testers/BasicTester.scala
+++ b/src/main/scala/chisel3/testers/BasicTester.scala
@@ -13,7 +13,7 @@ import internal.sourceinfo.SourceInfo
class BasicTester extends Module() {
// The testbench has no IOs, rather it should communicate using printf, assert, and stop.
- val io = IO(new Bundle())
+ val io = IO(new Bundle() {})
def popCount(n: Long): Int = n.toBinaryString.count(_=='1')