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8316414: C2: large byte array clone triggers "failed: malformed control flow" assertion failure on linux-x86

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Co-authored-by: Roberto Castañeda Lozano <rcastanedalo@openjdk.org>
Reviewed-by: thartmann
This commit is contained in:
Roland Westrelin 2023-10-04 12:06:52 +00:00
parent b0d6c8472f
commit 0a3a925ad8
2 changed files with 49 additions and 1 deletions
src/hotspot/share/opto
type.cpp
test/hotspot/jtreg/compiler/allocation
TestNewMaxLengthArray.java

2
src/hotspot/share/opto/type.cpp

@ -4750,7 +4750,7 @@ const TypeInt* TypeAryPtr::narrow_size_type(const TypeInt* size) const {
jint hi = size->_hi;
jint lo = size->_lo;
jint min_lo = 0;
jint max_hi = max_array_length(elem()->basic_type());
jint max_hi = max_array_length(elem()->array_element_basic_type());
//if (index_not_size) --max_hi; // type of a valid array index, FTR
bool chg = false;
if (lo < min_lo) {

48
test/hotspot/jtreg/compiler/allocation/TestNewMaxLengthArray.java Normal file

@ -0,0 +1,48 @@
/*
* Copyright (c) 2023, 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 8316414
* @summary C2: large byte array clone triggers "failed: malformed control flow" assertion failure on linux-x86
* @run main/othervm -Xcomp -XX:CompileOnly=TestNewMaxLengthArray::createAndClone TestNewMaxLengthArray
*/
public class TestNewMaxLengthArray {
// Maximum length of a byte array on a 32-bits platform using default object
// alignment (8 bytes).
static final int MAX_BYTE_ARRAY_LENGTH = 0x7ffffffc;
public static byte[] createAndClone() {
byte[] array = new byte[MAX_BYTE_ARRAY_LENGTH];
return array.clone();
}
public static void main(String[] a) {
try {
createAndClone();
} catch (OutOfMemoryError oome) {
}
}
}