# HG changeset patch
# User Adam Chlipala <adam@chlipala.net>
# Date 1315054633 14400
# Node ID 396e8d88120593c4a95d8c5bf11586c231afb89d
# Parent  4105f779de7be47e3a7cc29a1ae2faeabf72cfdb
Better detection of type class witnesses in local bindings

diff -r 4105f779de7b -r 396e8d881205 src/elaborate.sml
--- a/src/elaborate.sml	Sun Aug 28 19:32:20 2011 -0400
+++ b/src/elaborate.sml	Sat Sep 03 08:57:13 2011 -0400
@@ -2184,6 +2184,9 @@
 
                     val () = checkCon env e' et pt
 
+                    val env' = E.patBinds env p'
+                    (* Redo to get proper detection of type class witnesses *)
+
                     val pt = normClassConstraint env pt
                 in
                     case exhaustive (env, et, [p'], loc) of