8318410: jdk/java/lang/instrument/BootClassPath/BootClassPathTest.sh fails on Japanese Windows

Backport-of: 4144ef36bcefb0ba597be9c871b15be5043ad231

Author: Kimura Yukihiro

test/jdk/java/lang/instrument/BootClassPath/BootClassPathTest.sh

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2004, 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
@@ -64,7 +64,18 @@ echo "Creating manifest file..."
 # java Setup <workdir> <premain-class>
 # - outputs boot class path to boot.dir
 
-"$JAVA" ${TESTVMOPTS} -classpath "${TESTCLASSES}" Setup "${TESTCLASSES}" Agent
+OS=`uname -s`
+case ${OS} in
+    CYGWIN*)
+        CYGWIN="CYGWIN"
+        ;;
+    *)
+        CYGWIN=""
+        ;;
+esac
+
+"$JAVA" ${TESTVMOPTS} -classpath "${TESTCLASSES}" Setup "${TESTCLASSES}" Agent "${CYGWIN}"
+
 BOOTDIR=`cat ${TESTCLASSES}/boot.dir`
 
 echo "Created ${BOOTDIR}"

test/jdk/java/lang/instrument/BootClassPath/Setup.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2004, 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
@@ -45,6 +45,10 @@ public static void main(String[] args) throws Exception {
         }
         String workDir = args[0];
         String premainClass = args[1];
+        boolean isCygwin = false;
+        if (args.length==3 && args[2].equals("CYGWIN")) {
+            isCygwin = true;
+        }
 
         String manifestFile = workDir + fileSeparator + "MANIFEST.MF";
         String bootClassPath = "boot" + suffix();
@@ -87,7 +91,12 @@ public static void main(String[] args) throws Exception {
          */
         f = new File(workDir + fileSeparator + "boot.dir");
         try (FileOutputStream out = new FileOutputStream(f)) {
-            out.write(bootDir.getBytes(defaultEncoding));
+            if (osName.startsWith("Windows") && isCygwin) {
+                out.write(bootDir.getBytes("UTF-8"));
+            }
+            else {
+                out.write(bootDir.getBytes(defaultEncoding));
+            }
         }
     }