Java: Don't report the catch section as unreachable where a subclass of declared exception can be thrown (IDEA-175863)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/CatchSubclassOfThrownException.java

@@ -0,0 +1,23 @@
+class C {
+  void foo(boolean b) throws Exception {
+    try {
+      if (b) {
+        throw new ChildException();
+      } else {
+        method();
+      }
+    } catch (ChildException e) {
+      System.out.println("child");
+    } catch (ParentException e) {
+      System.out.println("parent");
+    }
+  }
+
+  private static void method() throws Exception {
+    throw new ParentException();
+  }
+
+  static class ParentException extends Exception { }
+
+  static class ChildException extends ParentException { }
+}