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-rw-r--r--kernel/type_errors.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/type_errors.ml b/kernel/type_errors.ml
index 30dcbafe6..d0ecf9e9b 100644
--- a/kernel/type_errors.ml
+++ b/kernel/type_errors.ml
@@ -30,6 +30,7 @@ type guard_error =
| RecCallInCaseArg of constr
| RecCallInCasePred of constr
| NotGuardedForm of constr
+ | ReturnPredicateNotCoInductive of constr
type arity_error =
| NonInformativeToInformative