Bugzilla – Full Text Bug Listing
| Summary: | varargs treats "null" inputs wrong at the first position | ||
|---|---|---|---|
| Product: | [Eclipse Project] JDT | Reporter: | Eric Bodden <eric> |
| Component: | Core | Assignee: | JDT-Core-Inbox <jdt-core-inbox> |
| Status: | RESOLVED DUPLICATE | QA Contact: | |
| Severity: | major | ||
| Priority: | P3 | ||
| Version: | 3.0 | ||
| Target Milestone: | --- | ||
| Hardware: | PC | ||
| OS: | Windows XP | ||
| Whiteboard: | |||
Could you please provide the build id? This is I20050219-1500.
Here my test case:
____
public class T {
/**
* @param args
*/
public static void main(String[] args) {
foo("abc",null);
foo(new Object[]{null,"abc"});
foo(null,"abc");
}
static void foo(Object... o) {
System.out.println(o[1]);
}
}
____
This outputs:
null
abc
Exception in thread "main" java.lang.NullPointerException
at T.foo(T.java:16)
at T.main(T.java:11)
(because o is null in the third case)
With latest, I get: null abc abc Closing as WORKSFORME. Reopen to close as duplicate. |
Hi. When passing "null" into a varargs method foo(Object... o) at the *first* position such as foo(null,oneObject,anotherObject), what you retrieve inside the method foo is not an array with array[0]==null, array[1]==oneObject and array[2] ==anotherObject, but simply "null" as the full array value. When I pass in foo(new Object[]{null,oneObject,anotherObject}) it works just fine. Also there is apparently no problem, when null occurs at any other position but the first, such as foo(oneObject,null,anotherObject).