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-rw-r--r--src/lem_interp/interp_lib.lem1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/lem_interp/interp_lib.lem b/src/lem_interp/interp_lib.lem
index 20bf11b5..feb99c02 100644
--- a/src/lem_interp/interp_lib.lem
+++ b/src/lem_interp/interp_lib.lem
@@ -186,6 +186,7 @@ let rec neg v = match v with
| L_zero -> L_one end) la)
| V_unknown -> V_unknown
| V_track v r -> taint (neg v) r
+ | V_tuple [v] -> neg v
end
;;