src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/Utils.java

rev 57826 : 8237521: Memory Access API fixes for 32-bit
Reviewed-by: mcimadamore, dholmes

@@ -1,7 +1,7 @@
 /*
- *  Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ *  Copyright (c) 2019, 2020, 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.  Oracle designates this

@@ -47,12 +47,13 @@
  */
 public final class Utils {
 
     private static Unsafe unsafe = Unsafe.getUnsafe();
 
-    // The maximum alignment supported by malloc - typically 16 on 64-bit platforms.
-    private final static long MAX_ALIGN = 16;
+    // The maximum alignment supported by malloc - typically 16 on
+    // 64-bit platforms and 8 on 32-bit platforms.
+    private final static long MAX_ALIGN = Unsafe.ADDRESS_SIZE == 4 ? 8 : 16;
 
     private static final JavaNioAccess javaNioAccess = SharedSecrets.getJavaNioAccess();
 
     private static final boolean skipZeroMemory = GetBooleanAction.privilegedGetProperty("jdk.internal.foreign.skipZeroMemory");