[ann] Exceptions with interfaces in multi-catch: assignability and control flow fix

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

@@ -1,3 +1,18 @@
+/*
+ * Copyright 2000-2011 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 abstract class C {
   private static class NE { }
   private static class E extends Exception { public String s; }
@@ -6,9 +21,9 @@ abstract class C {
   private static class E3 extends E { }
   private static class E4 extends E { }
   private static class RE extends RuntimeException { }
-  private interface I<T> { }
-  private static class IE1 extends E implements I<Integer> { }
-  private static class IE2 extends E implements I<Long> { }
+  private interface I<T> { void i(); }
+  private static class IE1 extends E implements I<Integer> { public void i() { } }
+  private static class IE2 extends E implements I<Long> { public void i() { } }
   private static class F<X> { F(X x) { } }
 
   abstract void f() throws E1, E2;
@@ -18,8 +33,7 @@ abstract class C {
     try { f(); } catch (E1 | E2 e) { }
     try { f(); } catch (E2 | E1 e) { e.printStackTrace(); System.out.println(e.s); }
     try { f(); } catch (E2 | E1 e) { } catch (E e) { } catch (RE e) { }
-    try { f(); } catch (E1 | E2 e) { E ee = e; }
-    try { g(); } catch (IE1 | IE2 e) { E ee = e; I ii = e; }
+    try { g(); } catch (IE1 | IE2 e) { E ee = e; I ii = e; e.i(); }
     try { g(); } catch (IE1 | IE2 e) { F<?> f = new F<>(e); }
     try { g(); } catch (IE1 | IE2 e) { new F<I<? extends Number>>(e); }
 
@@ -33,12 +47,32 @@ abstract class C {
     try { f(); } catch (<error descr="Types in multi-catch must be disjoint: 'C.E' is a subclass of 'C.E'">E</error> | E ignore) { }
 
     try { f(); } catch (E1 | E2 | <error descr="Exception 'C.E3' is never thrown in the corresponding try block">E3</error> e) { }
-    try { f(); } catch (<error descr="Exception 'C.E3' is never thrown in the corresponding try block">E3</error> | <error descr="Exception 'C.E4' is never thrown in the corresponding try block">E4</error> | RE e) { }
+    try { f(); } catch (<error descr="Exception 'C.E3' is never thrown in the corresponding try block">E3</error> | <error descr="Exception 'C.E4' is never thrown in the corresponding try block">E4</error> | RE e) { } catch (E e) { }
+    try { <error descr="Unhandled exceptions: C.E1, C.E2">f();</error> } catch (E3 | E4 | RE e) { }
 
     try { f(); } catch (E e) { } catch (<error descr="Exception 'C.E1' has already been caught">E1</error> | <error descr="Exception 'C.E3' has already been caught">E3</error> e) { }
     try { f(); } catch (E1 | E2 e) { } catch (<error descr="Exception 'C.E2' has already been caught">E2</error> e) { }
 
-    try { f(); } catch (E1 | E2 e) { } catch (E e) { <error descr="Incompatible types. Found: 'C.E', required: 'C.E1'">E1 ee = e;</error> }
-    try { f(); } catch (E | RE e) { <error descr="Cannot assign a value to final variable 'e'">e = null</error>; }
+    try { f(); } catch (E1 | E2 e) { <error descr="Incompatible types. Found: 'C.E1 | C.E2', required: 'C.E2'">E2 ee = e;</error> }
+    try { f(); } catch (E1 | E2 e) { <error descr="Cannot assign a value to final variable 'e'">e = new E1()</error>; }
+    try { f(); } catch (E1 | E2 e) { <error descr="Incompatible types. Found: 'C.E', required: 'C.E1 | C.E2'">e = new E()</error>; }
+  }
+}
+
+class D {
+  static class E extends Exception { }
+  static interface I { void i(); }
+  static class E1 extends E implements I { public void i() { } }
+  static class E2 extends E implements I { public void i() { } }
+
+  void m(boolean f) {
+    try {
+      if (f)
+        throw new E1();
+      else
+        throw new E2();
+    } catch (E1|E2 e) {
+      System.out.println(e);
+    }
   }
 }