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-rw-r--r--src/main/scala/firrtl/passes/ZeroWidth.scala1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/main/scala/firrtl/passes/ZeroWidth.scala b/src/main/scala/firrtl/passes/ZeroWidth.scala
index 83fc1b6b..e01cfffc 100644
--- a/src/main/scala/firrtl/passes/ZeroWidth.scala
+++ b/src/main/scala/firrtl/passes/ZeroWidth.scala
@@ -114,6 +114,7 @@ object ZeroWidth extends Transform {
case Seq(x) => x
case seq => DoPrim(Cat, seq, consts, tpe) map onExp
}
+ case DoPrim(Andr, Seq(x), _, _) if (bitWidth(x.tpe) == 0) => UIntLiteral(1) // nothing false
case other => other.tpe match {
case UIntType(IntWidth(ZERO)) => UIntLiteral(ZERO, IntWidth(BigInt(1)))
case SIntType(IntWidth(ZERO)) => SIntLiteral(ZERO, IntWidth(BigInt(1)))