Removed leading zeros from UInt constants

2 files changed, 12 insertions, 1 deletions

diff --git a/src/main/stanza/bigint.stanza b/src/main/stanza/bigint.stanza
index ad4a5bde..bc13bdbf 100644
--- a/src/main/stanza/bigint.stanza
+++ b/src/main/stanza/bigint.stanza
@@ -39,7 +39,8 @@ public defn BigInt (len: Int) :
          ;println(digit)
          val hex = as-hex(digit)
          ;println(hex)
-         str = string-join([str hex])
+         if str == "h" and hex == "0" and (i + 4 < len) : false
+         else : str = string-join([str hex])
        string-join([ "\"" str "\""])
      defmethod to-bin (this) -> String :
        string-join $
diff --git a/test/features/BigInt.fir b/test/features/BigInt.fir
new file mode 100644
index 00000000..225f1d8b
--- /dev/null
+++ b/test/features/BigInt.fir
@@ -0,0 +1,10 @@
+; RUN: firrtl -i %s -o %s.v -X verilog -p c 2>&1 | tee %s.out | FileCheck %s
+circuit Top : 
+  module Top : 
+    node x = UInt("h2")
+    node y = UInt("h100000")
+    node z = UInt("h00")
+
+;CHECK: node x = UInt("h2")
+;CHECK: node z = UInt("h0")
+;CHECK: Done!