--- /dev/null 2016-03-28 11:24:37.175837966 -0700 +++ new/jdk/test/java/lang/StackWalker/LocalsCrash.java 2016-05-03 11:32:16.613901188 -0700 @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2016 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 8147039 + * @summary Test for -Xcomp crash that happened before 8147039 fix + * @run testng/othervm -Xcomp LocalsCrash + */ + +import org.testng.annotations.*; +import java.lang.reflect.*; +import java.util.List; +import java.util.stream.Collectors; + +public class LocalsCrash { + static Class liveStackFrameClass; + static Method getStackWalker; + + static { + try { + liveStackFrameClass = Class.forName("java.lang.LiveStackFrame"); + getStackWalker = liveStackFrameClass.getMethod("getStackWalker"); + getStackWalker.setAccessible(true); + } catch (Throwable t) { throw new RuntimeException(t); } + } + + private StackWalker walker; + + LocalsCrash() { + try { + walker = (StackWalker) getStackWalker.invoke(null); + } catch (Exception e) { throw new RuntimeException(e); } + } + + @Test + public void test00() { doStackWalk(); } + + @Test + public void test01() { doStackWalk(); } + + private synchronized List doStackWalk() { + try { + // Unused local variables will become dead + int x = 10; + char c = 'z'; + String hi = "himom"; + long l = 1000000L; + double d = 3.1415926; + + return walker.walk(s -> s.collect(Collectors.toList())); + } catch (Exception e) { throw new RuntimeException(e); } + } +}