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8390506: Several JMH benchmarks fail with java.lang.NullPointerException #32423

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333f116
JDK-8390506
lgxbslgx Aug 18, 2026
9a03885
Add --enable-preview
lgxbslgx Aug 19, 2026
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/InlineCursor.java
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Expand Up @@ -2,7 +2,7 @@
* Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
*/

package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs;
package org.openjdk.bench.valhalla.sandbox.corelibs;

import java.util.ConcurrentModificationException;
import java.util.NoSuchElementException;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/XArrayList.java
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* questions.
*/

package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs;
package org.openjdk.bench.valhalla.sandbox.corelibs;

import java.util.AbstractList;
import java.util.Arrays;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/XArrayListCursorTest.java
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@@ -1,7 +1,7 @@
/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
*/
package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs;
package org.openjdk.bench.valhalla.sandbox.corelibs;

import java.util.List;
import java.util.Iterator;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/GetX.java
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Expand Up @@ -20,7 +20,7 @@
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Setup;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/HashMap.java
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* questions.
*/

package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import java.io.IOException;
import java.io.InvalidObjectException;
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8 changes: 4 additions & 4 deletions test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/HashMapBench.java
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Expand Up @@ -21,7 +21,7 @@
* questions.
*/

package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
Expand Down Expand Up @@ -55,7 +55,7 @@
*/
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
@Fork(1)
@Fork(value = 1, jvmArgsAppend = {"--enable-preview"})
@State(Scope.Thread)
public class HashMapBench {
private IntFunction<Map<Integer, Integer>> mapSupplier;
Expand All @@ -65,8 +65,8 @@ public class HashMapBench {
private int size;

@Param(value = {
"org.openjdk.bench.valhalla.corelibs.mapprotos.HashMap",
// "org.openjdk.bench.valhalla.corelibs.mapprotos.XHashMap",
"org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos.HashMap",
// "org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos.XHashMap",
"java.util.HashMap",
})
private String mapType;
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8 changes: 4 additions & 4 deletions test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/HashMapToArray.java
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* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;


import org.openjdk.jmh.annotations.Benchmark;
Expand Down Expand Up @@ -48,7 +48,7 @@

@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Fork(1)
@Fork(value = 1, jvmArgsAppend = {"--enable-preview"})
@State(Scope.Thread)
public class HashMapToArray {

Expand All @@ -57,8 +57,8 @@ public class HashMapToArray {


@Param(value = {
"org.openjdk.bench.valhalla.corelibs.mapprotos.HashMap",
// "org.openjdk.bench.valhalla.corelibs.mapprotos.XHashMap",
"org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos.HashMap",
// "org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos.XHashMap",
"java.util.HashMap",
})
private String mapType;
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8 changes: 4 additions & 4 deletions test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/MapBase.java
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* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
Expand All @@ -40,7 +40,7 @@
import java.util.concurrent.TimeUnit;
import java.util.stream.IntStream;

@Fork(1)
@Fork(value = 1, jvmArgsAppend = {"--enable-preview"})
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@BenchmarkMode(Mode.AverageTime)
@State(Scope.Thread)
Expand All @@ -61,8 +61,8 @@ public class MapBase {

@Param(value = {
"java.util.HashMap",
"org.openjdk.bench.valhalla.corelibs.mapprotos.HashMap",
// "org.openjdk.bench.valhalla.corelibs.mapprotos.XHashMap",
"org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos.HashMap",
// "org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos.XHashMap",
// "java.util.HashMap0",
})
public String mapType;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/PutX.java
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* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Setup;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/ReplX.java
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* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Setup;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/WalkX.java
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* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.CompilerControl;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/XAbstractMap.java
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Expand Up @@ -23,7 +23,7 @@
* questions.
*/

package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import java.util.AbstractCollection;
import java.util.AbstractSet;
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2 changes: 1 addition & 1 deletion test/micro/org/openjdk/bench/valhalla/sandbox/corelibs/mapprotos/XHashMap.java
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Expand Up @@ -23,7 +23,7 @@
* questions.
*/

package org.openjdk.bench.valhalla.sandbox.corelibs.corelibs.mapprotos;
package org.openjdk.bench.valhalla.sandbox.corelibs.mapprotos;

import java.io.IOException;
import java.io.InvalidObjectException;
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