Report Builder.error errors as exceptions outside hardware context (#1425)

* Immediately throw Builder.error errors outside hardware context

* Add example of hidden no-hardware-context error from #1422

Co-authored-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/test/scala/chiselTests/ImplicitConversionsSpec.scala b/src/test/scala/chiselTests/ImplicitConversionsSpec.scala
index d5939b24..bde43717 100644
--- a/src/test/scala/chiselTests/ImplicitConversionsSpec.scala
+++ b/src/test/scala/chiselTests/ImplicitConversionsSpec.scala
@@ -39,5 +39,10 @@ class ImplicitConversionsSpec extends ChiselFlatSpec {
     import chisel3.util._
     assertTypeError("Decoupled(UInt(8.W)).target")
   }
-}
 
+  "X.B for X not in [0,1]" should "throw an exception, even outside hardware context" in {
+    a [ChiselException] should be thrownBy {
+      65.B
+    }
+  }
+}