Bug 78049

Summary:	[1.5][compiler] Missed error for generic array creation.
Product:	[Eclipse Project] JDT	Reporter:	R Lenard <rlenard>
Component:	Core	Assignee:	Philipe Mulet <philippe_mulet>
Status:	VERIFIED FIXED	QA Contact:
Severity:	minor
Priority:	P3
Version:	3.1
Target Milestone:	3.1 M4
Hardware:	PC
OS:	Windows 2000
Whiteboard:

Description R Lenard

2004-11-08 01:12:11 EST

I read somewhere that creation of generic arrays is not allowed and the results 
of JAVAC seem to confirm this.
% cat X.java
public class X
{
    public static void main(String[] args) {
        Comparable<String>[] X = {
        };
        System.err.println("X.toString() " + X.toString());

        Comparable<String>[] Y = new Comparable<String>[] {
        };
     }
}
% javac X.java
c:/Eclipse/Fooey/src/X.java:4: generic array creation
        Comparable<String>[] X = {
                                 ^
c:/Eclipse/Fooey/src/X.java:8: generic array creation
        Comparable<String>[] Y = new Comparable<String>[] {
                                                          ^
2 errors

However 3.1M3 doesn't detect the first as a problem.

Comment 1 Philipe Mulet

2004-11-08 06:45:23 EST

Array initializers of generic array type should indeed be rejected (currently
only rejecting array alloc expr).

Added regression test: GenericTypeTest#test393. Tricky case is array alloc
combined with trailing initializer, should only issue one error report:
e.g. new List<String[]{}

Fixed

Comment 2 Olivier Thomann

2004-12-14 15:46:55 EST

Verified in 200412140800