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-rw-r--r--src/elab_err.sig1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/elab_err.sig b/src/elab_err.sig
index fbe55a5b..3dfd5d4e 100644
--- a/src/elab_err.sig
+++ b/src/elab_err.sig
@@ -58,6 +58,7 @@ signature ELAB_ERR = sig
| CRecordFailure of Elab.con * Elab.con * (Elab.con * Elab.con * Elab.con) option
| TooLifty of ErrorMsg.span * ErrorMsg.span
| TooUnify of Elab.con * Elab.con
+ | TooDeep
val cunifyError : ElabEnv.env -> cunify_error -> unit