java.net.InetAddress.getByAddress(null) throws NPE insread of
UnknownHostException
----------------------------------------------------------------------------------
Key: HARMONY-61
URL: http://issues.apache.org/jira/browse/HARMONY-61
Project: Harmony
Type: Bug
Components: Classlib
Reporter: Svetlana Samoilenko
According to j2se 1.4.2 specification for
java.net.InetAddress.getByAddress(byte[] addr) the method must throw
UnknownHostException if IP address is of illegal length. IPv4 address byte
array must be 4 bytes long and IPv6 byte array must be 16 bytes long. There is
no mention about NPE at all. Mentions about NPE in case of null argument were
not found in java.net package specification.
The test listed below shows that getByAddress (null) throws NPE. BEA throws
UnknownHostException.
Code to reproduce:
import java.net.*;
public class test2 {
public static void main (String[] args) {
try {
InetAddress.getByAddress (null);
} catch (UnknownHostException e) {
System.out.println("***OK. Expected UnknownHostException. " + e);
}
}
}
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)
***OK. UnknownHostException=:java.net.UnknownHostException: addr is of illegal
length
C:\tmp>C:\harmony\trunk\deploy\jre\bin\java -showversion test2
(c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as
applicable.
java.lang.NullPointerException
at java.net.InetAddress.getByAddress(InetAddress.java:735)
at java.net.InetAddress.getByAddress(InetAddress.java:713)
at test2.main(test2.java:7)
Suggested junit test case:
------------------------ InetAddressTest.java
-------------------------------------------------
import java.net.*;
import junit.framework.*;
public class InetAddressTest extends TestCase {
public static void main(String[] args) {
junit.textui.TestRunner.run(InetAddressTest.class);
}
public void test_getByAddress() {
try {
InetAddress.getByAddress (null);
fail("Assert 0: UnknownHostException must be thrown");
} catch (UnknownHostException e) {
}
}
}
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