--- a/src/share/classes/com/sun/tools/javac/code/Type.java	Fri Jul 26 12:46:37 2013 +0100
+++ b/src/share/classes/com/sun/tools/javac/code/Type.java	Fri Jul 26 13:20:55 2013 +0100
@@ -1379,7 +1379,7 @@
         }
         
         public void addBound(InferenceBound ib, Type bound, Types types, boolean update) {
-            Type bound2 = toTypeVarMap.apply(bound);
+            Type bound2 = toTypeVarMap.apply(bound).baseType();
             List<Type> prevBounds = bounds.get(ib);
             for (Type b : prevBounds) {
                 //check for redundancy - use strict version of isSameType on tvars

--- a/src/share/classes/com/sun/tools/javac/comp/Attr.java	Fri Jul 26 12:46:37 2013 +0100
+++ b/src/share/classes/com/sun/tools/javac/comp/Attr.java	Fri Jul 26 13:20:55 2013 +0100
@@ -2384,7 +2384,7 @@
 
             ResultInfo bodyResultInfo = lambdaType.getReturnType() == Type.recoveryType ?
                 recoveryInfo :
-                new LambdaResultInfo(lambdaType.getReturnType(), funcContext);
+                new ResultInfo(VAL, lambdaType.getReturnType(), funcContext);
             localEnv.info.returnResult = bodyResultInfo;
 
             Log.DeferredDiagnosticHandler lambdaDeferredHandler = new Log.DeferredDiagnosticHandler(log);
@@ -2590,28 +2590,6 @@
                         super.compatible(found, req, warn);
             }
         }
-        
-        class LambdaResultInfo extends ResultInfo {
-
-            LambdaResultInfo(Type pt, CheckContext checkContext) {
-                super(VAL, pt, checkContext);
-            }
-            
-            @Override
-            protected Type check(DiagnosticPosition pos, Type found) {
-                return super.check(pos, found.baseType());
-            }
-
-            @Override
-            protected ResultInfo dup(CheckContext newContext) {
-                return new LambdaResultInfo(pt, newContext);
-            }
-
-            @Override
-            protected ResultInfo dup(Type newPt) {
-                return new LambdaResultInfo(newPt, checkContext);
-            }
-        }
 
         /**
         * Lambda compatibility. Check that given return types, thrown types, parameter types

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/lambda/8021567/T8021567.java	Fri Jul 26 13:20:55 2013 +0100
@@ -0,0 +1,26 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8021567
+ * @summary Javac doesn't report "java: reference to method is ambiguous" any more
+ * @compile/fail/ref=T8021567.out -XDrawDiagnostics T8021567.java
+ */
+
+class T8021567 {
+    
+    interface I_int { int m(); } 
+
+    interface I_char { char m(); } 
+
+    interface I_byte { byte m(); } 
+
+    void m(I_byte b) { }
+    void m(I_char b) { }
+    void m(I_int b) { }
+
+    void test() {
+        m(() -> 1); //ambiguous
+        m(() -> 256); //ok - only method(I_int) applicable
+        m(() -> { int i = 1; return i; }); //ok - only method(I_int) applicable
+        m(() -> { int i = 256; return i; }); //ok - only method(I_int) applicable
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/lambda/8021567/T8021567.out	Fri Jul 26 13:20:55 2013 +0100
@@ -0,0 +1,2 @@
+T8021567.java:21:9: compiler.err.ref.ambiguous: m, kindname.method, m(T8021567.I_byte), T8021567, kindname.method, m(T8021567.I_char), T8021567
+1 error