type compatibility constrain: unchecked conversion: return type is inference variable case

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/constraints/TypeCompatibilityUncheckedConversionReturnConstraints.java

@@ -0,0 +1,10 @@
+public class Sample {
+  interface G<A> {}
+  interface G1 extends G {}
+
+  <B> B bar(B b) {return null;}
+
+  void f(G1 g1) {
+    G<String> l11 = bar(g1);
+  }
+}

java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/ConstraintsInferenceMiscTest.java

@@ -38,6 +38,10 @@ public class ConstraintsInferenceMiscTest extends LightDaemonAnalyzerTestCase {
     doTest(false);
   }
 
+  public void testTypeCompatibilityUncheckedConversionReturnConstraints() throws Exception {
+    doTest(false);
+  }
+
   private void doTest(final boolean checkWarnings) {
     doTestNewInference(BASE_PATH + "/" + getTestName(false) + ".java", checkWarnings, false);
   }