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Diffstat (limited to 'pretyping/typeclasses_errors.ml')
| -rw-r--r-- | pretyping/typeclasses_errors.ml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/pretyping/typeclasses_errors.ml b/pretyping/typeclasses_errors.ml index fc4362875..6a193e910 100644 --- a/pretyping/typeclasses_errors.ml +++ b/pretyping/typeclasses_errors.ml @@ -53,3 +53,9 @@ let unsatisfiable_constraints env evd ev = (env, UnsatisfiableConstraints (evd, Some (evi, kind))))) let mismatched_ctx_inst env c n m = typeclass_error env (MismatchedContextInstance (c, n, m)) + +let rec unsatisfiable_exception exn = + match exn with + | TypeClassError (_, UnsatisfiableConstraints _) -> true + | Ploc.Exc (_, e) -> unsatisfiable_exception e + | _ -> false |