assignment: stop bounds promotion inside nested wildcards (IDEA-139161)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/StopBoundsPromotionInsideNestedWildcards.java

@@ -0,0 +1,8 @@
+interface A<T extends B<? extends T>> { }
+interface B<T extends A<?>> { }
+
+class C {
+  void foo(A<?> x){
+    <error descr="Incompatible types. Found: 'A<capture<?>>', required: 'A<? extends B<? extends A<?>>>'">A<? extends B<? extends A<?>>>  y =  x;</error>
+  }
+}