[jira] Commented: (HARMONY-101) NPE in java.util.regex.Pattern.compile()

["Tim Ellison (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/HARMONY-101?page=comments#action_12367228 ] 

Tim Ellison commented on HARMONY-101:
-------------------------------------

Svetlana,

Until the HARMONY-39 contribution is accepted you won't have much joy with the regex code, since there are only compile-against stubs in the regex module.

> NPE in java.util.regex.Pattern.compile()
> ----------------------------------------
>
>          Key: HARMONY-101
>          URL: http://issues.apache.org/jira/browse/HARMONY-101
>      Project: Harmony
>         Type: Bug
>   Components: Classlib
>     Reporter: Svetlana Samoilenko

>
> According to 1.4.2 and 1.5 specifications for java.util.regex.Pattern.matches(String regex,CharSequence input)                              
> An invocation of this convenience method of the form 
>         Pattern.matches(regex, input);
> behaves in exactly the same way as the expression 
>         Pattern.compile(regex).matcher(input).matches()
> Harmony throws unspecified NPE for Pattern.compile and returns false instead of true for Pattern.matches().
> Code to reproduce: 
> import java.util.regex.Pattern;
> public class test2 {
>     public static void main(String[] args) {             
>         System.out.println("boolean is true="+Pattern.matches("[,&&\\p{Punct}]", ","));
>         System.out.println("boolean is true="+Pattern.compile("[,&&\\p{Punct}]").matcher(",").matches());          
>     }
> }
>  Steps to Reproduce: 
> 1. Build Harmony (check-out on 2006-01-30) j2se subset as described in README.txt. 
> 2. Compile test2.java using BEA 1.4 javac 
> > javac -d . test2.java 
> 3. Run java using compatible VM (J9) 
> > java -showversion test2
> Output: 
> C:\tmp>C:\jrockit-j2sdk1.4.2_04\bin\java.exe -showversion test2 
> java version "1.4.2_04" 
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05) 
> BEA WebLogic JRockit(TM) 1.4.2_04 JVM (build ari-31788-20040616-1132-win-ia32, Native Threads, GC strategy: parallel) 
> boolean is true=true
> boolean is true=true
> C:\tmp>C:\harmony\trunk\deploy\jre\bin\java -showversion test2 
> (c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as applicable. 
> boolean is true=false
> java.lang.NullPointerException
>         at test2.main(test2.java:5)
> Suggested junit test case:
> ------------------------ PatternTest.java ------------------------------------------------- 
> import junit.framework.*; 
> import java.util.regex.Pattern;
> public class PatternTest extends TestCase { 
>     public static void main(String[] args) { 
>         junit.textui.TestRunner.run(PatternTest.class); 
>     } 
>     public void test_compile () { 
>         assertTrue(Pattern.matches("[,&&\\p{Punct}]", ","));
>         assertTrue(Pattern.compile("[,&&\\p{Punct}]").matcher(",").matches());                     
>      } 
> }

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