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diff src/elab_err.sig @ 1639:6c00d8af6239

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Add a new scoping check for unification variables, to fix a type inference bug
author Adam Chlipala <adam@chlipala.net>
date Sun, 18 Dec 2011 11:29:13 -0500
parents e525ad571e15
children 0bafdfae2ac7
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line diff
--- a/src/elab_err.sig	Sat Dec 17 20:42:39 2011 -0500
+++ b/src/elab_err.sig	Sun Dec 18 11:29:13 2011 -0500
@@ -35,6 +35,7 @@
     datatype kunify_error =
              KOccursCheckFailed of Elab.kind * Elab.kind
            | KIncompatible of Elab.kind * Elab.kind
+           | KScope of Elab.kind * Elab.kind
 
     val kunifyError : ElabEnv.env -> kunify_error -> unit
 
@@ -59,6 +60,7 @@
            | TooLifty of ErrorMsg.span * ErrorMsg.span
            | TooUnify of Elab.con * Elab.con
            | TooDeep
+           | CScope of Elab.con * Elab.con
 
     val cunifyError : ElabEnv.env -> cunify_error -> unit