From 802fc606ff18c261eb591d7ae6dbb99fe9c48af9 Mon Sep 17 00:00:00 2001
From: Adam Chlipala <adam@chlipala.net>
Date: Fri, 4 May 2012 10:33:04 -0400
Subject: More diagnostic information about some type class resolution failures

---
 src/elab_env.sig | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/elab_env.sig')

diff --git a/src/elab_env.sig b/src/elab_env.sig
index 662d7071..e0c589c4 100644
--- a/src/elab_env.sig
+++ b/src/elab_env.sig
@@ -73,6 +73,7 @@ signature ELAB_ENV = sig
     val isClass : env -> Elab.con -> bool
     val resolveClass : (Elab.con -> Elab.con) -> (Elab.con * Elab.con -> bool)
                        -> env -> Elab.con -> Elab.exp option
+    val resolveFailureCause : unit -> Elab.con option
     val listClasses : env -> (Elab.con * (Elab.con * Elab.exp) list) list
 
     val pushERel : env -> string -> Elab.con -> env
-- 
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