/* * Copyright (c) 2025, Red Hat, Inc. 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 8355230 * @summary Crash in fuzzer tests: assert(n != nullptr) failed: must not be null * @run main/othervm -XX:CompileCommand=compileonly,TestNullRegionInputAtPhiMakePathDead::* -Xcomp TestNullRegionInputAtPhiMakePathDead */ public class TestNullRegionInputAtPhiMakePathDead { public static long instanceCount=-37082278491330812L; public static float fFld=1.509F; public static int iFld=89; public static long vMeth_check_sum = 0; public void mainTest() { int i19, i20=13736, i21, i24=5; boolean b2=true; double d; int i3; for (d = 5; d < 131; ++d) { i3 = 12; while (--i3 > 0) { TestNullRegionInputAtPhiMakePathDead.fFld *= -31237; } } TestNullRegionInputAtPhiMakePathDead.fFld %= 16334; TestNullRegionInputAtPhiMakePathDead.instanceCount = 0; for (i19 = 2; i19 < 281; i19++) { try { TestNullRegionInputAtPhiMakePathDead.iFld = (57 % i20); } catch (ArithmeticException a_e) {} i20 += (((i19 * TestNullRegionInputAtPhiMakePathDead.fFld) + TestNullRegionInputAtPhiMakePathDead.instanceCount) - i19); for (i21 = i19; i21 < 90; i21++) { if (b2) { } else { // CastII of b2 to false added here becomes top during igvn. It's used by a Phi // at a Region that merges paths from the switch and if. Some of those paths are // found unreachable at parse time but added to the Region anyway. switch ((((i21 >>> 1) % 4) * 5) + 115) { case 129: break; case 135: i24 |= i24; } } } } System.out.println("vMeth_check_sum: " + vMeth_check_sum); } public static void main(String[] strArr) { try { TestNullRegionInputAtPhiMakePathDead _instance = new TestNullRegionInputAtPhiMakePathDead(); for (int i = 0; i < 10; i++ ) { _instance.mainTest(); } } catch (Exception ex) { } } }