Name: tb29552 Date: 04/05/2004


FULL PRODUCT VERSION :
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2-b28)
Java HotSpot(TM) Client VM (build 1.4.2-b28, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Linux 2.4.20-20.9 #1 Mon Aug 18 11:45:58 EDT 2003 i686 i686 i386 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
Matcher.find fails to return and stays in eternal loop.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
While running this class, we never get to see "done".

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class retest2 {

    public static void main(String[] argv) {

        String body = "156580451111112225588087755221111111566969655555555";
        String begin = "^\\s*";
        /* allow accented characters. 215 and 247 could be excluded */
        String word = "(\\w|\\d|[\\xC0-\\xFF]|/)+";
        String wordEnd = "\\s+|$";
        String regexp = begin;

        regexp = regexp + word + wordEnd;
        System.err.println(regexp);
        Pattern pattern = Pattern.compile(regexp);
        Matcher matcher = pattern.matcher(body);
        matcher.find();
        System.out.println("done");
    }
}


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
mather.find() should return false
ACTUAL -
matcher.find() stays in loop

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class retest2 {

    public static void main(String[] argv) {

        String body = "156580451111112225588087755221111111566969655555555";
        String begin = "^\\s*";
        /* allow accented characters. 215 and 247 could be excluded */
        String word = "(\\w|\\d|[\\xC0-\\xFF]|/)+";
        String wordEnd = "\\s+|$";
        String regexp = begin;

        regexp = regexp + word + wordEnd;
        System.err.println(regexp);
        Pattern pattern = Pattern.compile(regexp);
        Matcher matcher = pattern.matcher(body);
        matcher.find();
        System.out.println("done");
    }
}

---------- END SOURCE ----------
(Incident Review ID: 245897)
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