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-rw-r--r--src/cjr.sml1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/cjr.sml b/src/cjr.sml
index 74c4bca2..ac30bd9f 100644
--- a/src/cjr.sml
+++ b/src/cjr.sml
@@ -60,6 +60,7 @@ datatype exp' =
| ERel of int
| ENamed of int
| ECon of datatype_kind * patCon * exp option
+ | ENone of typ
| ESome of typ * exp
| EFfi of string * string
| EFfiApp of string * string * exp list