7039822: Project Coin: add explicit tests for the lub of an exception parameter

Reviewed-by: mcimadamore, jjg

test/tools/javac/multicatch/Neg07.java

+/*
+ * @test  /nodynamiccopyright/
+ * @bug 7039822
+ * @summary Verify typing of lub of exception parameter w.r.t getClass
+ * @author Joseph D. Darcy
+ * @compile/fail/ref=Neg07.out -XDrawDiagnostics Neg07.java
+ */
+
+public class Neg07 {
+    private static void test(int i) {
+        try {
+            thrower(i);
+        } catch (SonException | DaughterException e) {
+            Class<? extends HasFoo> clazz2 = e.getClass(); // Rejected!
+            HasFoo m = e;
+            e.foo();
+        }
+    }
+
+    private static interface HasFoo {
+        void foo();
+    }
+
+    static void thrower(int i) throws SonException, DaughterException {
+        if (i == 0)
+            throw new SonException();
+        else
+            throw new DaughterException();
+    }
+
+    private static class ParentException extends RuntimeException {}
+
+    private static class SonException
+        extends ParentException
+        implements HasFoo {
+
+        public void foo() {
+            System.out.println("SonException.foo");
+        }
+    }
+
+    private static class DaughterException
+        extends ParentException
+        implements HasFoo {
+
+        public void foo() {
+            System.out.println("DaughterException.foo");
+        }
+    }
+}

test/tools/javac/multicatch/Neg07.out

+Neg07.java:14:56: compiler.err.prob.found.req: (compiler.misc.incompatible.types), java.lang.Class<compiler.misc.type.captureof: 1, ? extends Neg07.ParentException>, java.lang.Class<? extends Neg07.HasFoo>
+1 error

test/tools/javac/multicatch/Pos10.java

+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 7039822
+ * @summary Verify lub of an exception parameter can be an intersection type
+ * @author Joseph D. Darcy
+ */
+
+public class Pos10 {
+    public static void main(String... args) {
+        test(0);
+        test(1);
+
+        if (record != 0b11)
+            throw new RuntimeException("Unexpected exception execution: " +
+                                       record);
+        if (closeRecord != 0b11)
+            throw new RuntimeException("Unexpected close execution: " +
+                                       closeRecord);
+    }
+
+    private static int record = 0;
+    private static int closeRecord = 0;
+
+    private static void test(int i) {
+        try {
+            thrower(i);
+        } catch (SonException | DaughterException e) {
+            Class<? extends ParentException> clazz = e.getClass();
+            HasFoo m = e;
+            e.foo();
+
+            try (AutoCloseable ac = e) {
+                e.toString();
+            } catch(Exception except) {
+                throw new RuntimeException(except);
+            }
+        }
+    }
+
+    private static interface HasFoo {
+        void foo();
+    }
+
+    private static void thrower(int i) throws SonException, DaughterException {
+        if (i == 0)
+            throw new SonException();
+        else
+            throw new DaughterException();
+    }
+
+    private static class ParentException extends RuntimeException {}
+
+    private static class SonException
+        extends ParentException
+        implements HasFoo, AutoCloseable {
+
+        public void foo() {
+            record |= 0b01;
+        }
+
+        @Override
+        public void close() {
+            closeRecord |= 0b01;
+        }
+    }
+
+    private static class DaughterException
+        extends ParentException
+        implements HasFoo, AutoCloseable {
+
+        public void foo() {
+            record |= 0b10;
+        }
+
+        @Override
+        public  void close() {
+            closeRecord |= 0b10;
+        }
+    }
+}