7041232: IllegalArgumentException in sun.text.bidi.BidiBase.setLine starting from JDK 7 b64

Reviewed-by: okutsu

src/share/classes/sun/text/bidi/BidiBase.java

@@ -2889,10 +2889,6 @@ public class BidiBase {
         verifyValidPara();
         verifyRange(start, 0, limit);
         verifyRange(limit, 0, length+1);
-        if (getParagraphIndex(start) != getParagraphIndex(limit - 1)) {
-            /* the line crosses a paragraph boundary */
-            throw new IllegalArgumentException();
-        }
 
         return BidiLine.setLine(bidi, this, newBidi, newBidiBase, start, limit);
     }

test/java/text/Bidi/Bug7041232.java

+/*
+ * Copyright (c) 2011, 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 7041232
+ * @summary verify that an unexpected exception isn't thrown for unnatural data to keep backward compatibility with JDK 6.
+ */
+import java.text.*;
+
+public class Bug7041232 {
+
+    public static void main(String[] args) {
+        String UnicodeChars;
+        StringBuffer sb = new StringBuffer();
+
+        // Generates String which includes U+2028(line separator) and
+        // U+2029(paragraph separator)
+        for (int i = 0x2000; i < 0x2100; i++) {
+            sb.append((char)i);
+        }
+        UnicodeChars = sb.toString();
+
+        Bidi bidi = new Bidi(UnicodeChars, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT);
+        bidi.createLineBidi(0, UnicodeChars.length());
+    }
+
+}