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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