diff -r 9f0ec00514b6 -r 3fef0cae83b3 test/tools/javac/lambda/LambdaConv25.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/lambda/LambdaConv25.java	Thu Feb 21 15:27:05 2013 +0000
@@ -0,0 +1,21 @@
+/*
+ * @test /nodynamiccopyright/
+ * @summary check that merged inherited descriptors preservers type-parameters
+ * @compile/fail/ref=LambdaConv25.out -XDrawDiagnostics LambdaConv25.java
+ */
+class LambdaConv25 {
+
+    interface A {
+        <X> void m();
+    }
+
+    interface B {
+        <X> void m();
+    }
+
+    interface C extends A, B { }
+
+    void test() {
+        C c = ()->{}; //should fail
+    }
+}