/* * Copyright (c) 2024, 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 8326404 * @summary Assertion error when trying to compile switch with fallthrough with pattern * @compile T8326404.java * @run main T8326404 */ public class T8326404 { private static final record R(T a) {} public static void main(String[] args) { assertEquals(4, run1("")); assertEquals(3, run1(new R(""))); assertEquals(2, run1(new R(42))); assertEquals(2, run1_break1("")); assertEquals(1, run1_break1(new R(""))); assertEquals(2, run1_break1(new R(42))); assertEquals(3, run2("")); assertEquals(4, run2(new R(""))); assertEquals(2, run2(new R(42))); assertEquals(1, run2_break1("")); assertEquals(2, run2_break1(new R(""))); assertEquals(2, run2_break1(new R(42))); assertEquals(2, run3("")); assertEquals(4, run3(new R(""))); assertEquals(3, run3(new R(42))); assertEquals(2, run3_break1("")); assertEquals(2, run3_break1(new R(""))); assertEquals(1, run3_break1(new R(42))); } private static int run1(Object o) { int i = 0; switch (o) { case String _: i++; case R(String _): i++; case R(Integer _): i++; default: i++; } return i; } private static int run1_break1(Object o) { int i = 0; switch (o) { case String s: i++; case R(String _): i++; break; case R(Integer _): i++; default: i++; } return i; } private static int run2(Object o) { int i = 0; switch (o) { case R(String _): i++; case String _: i++; case R(Integer _): i++; default: i++; } return i; } private static int run2_break1(Object o) { int i = 0; switch (o) { case R(String _): i++; case String _: i++; break; case R(Integer _): i++; default: i++; } return i; } private static int run3(Object o) { int i = 0; switch (o) { case R(String _): i++; case R(Integer _): i++; case String _: i++; default: i++; } return i; } private static int run3_break1(Object o) { int i = 0; switch (o) { case R(String _): i++; case R(Integer _): i++; break; case String _: i++; default: i++; } return i; } static void assertEquals(int expected, int actual) { if (expected != actual) { throw new AssertionError("Expected: " + expected + ", but got: " + actual); } } }