228446 - eval returns corrupt arrays when they are very long

Status: RESOLVED DUPLICATE of bug 225831

(Rhino Graveyard :: Core, defect)

Description

[yaar schnitman]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Build Identifier: Rhino v1.5.3

The following code works alright:
eval("var a = [['x1','y1'], ['x2','y2']];");
java.lang.System.out.println(a.length);
//prints 2
java.lang.System.out.println(a[0]);
//prints "x1, y1"
java.lang.System.out.println(typeof(a[0]));
//prints "object"

While this code produces bad results:
eval("var a = [['x1','y1'], ['x2','y3'], ..., ['x2000','y2000']];");
java.lang.System.out.println(a.length);
//prints 2000
java.lang.System.out.println(a[0]);
//prints "x1792" instead of "x1, y1"!!!!
java.lang.System.out.println(typeof(a[0]));
//prints "string" instead of "object"!!!!


Reproducible: Always

Steps to Reproduce:
We embed Rhino in a Java application, over JDK 1.4.1_05.

Comment 1

[Igor Bukanov]

Self-assigning

Comment 2

[Igor Bukanov]

It is fixed in Rhino CVS tip as bug 225831. For example, the following script
works as expected with N = 2, 2000, 20000:

var N = 20000;
var buf = Array(N + 1);
buf[0] = "var a = [";
for (var i = 1; i != N + 1; ++i) {
	buf[i] = "['x"+i+"','y"+i+"']"+(i != N ? "," : "];");
}

var script_str = buf.join("");
eval(script_str)
java.lang.System.out.println(a.length);
java.lang.System.out['println(java.lang.String)'](a[0]);
java.lang.System.out.println(typeof(a[0]));


Note that simple java.lang.System.out.println(a[0]) should not work since a[0]
is 2 element array which makes Rhino to try java.lang.System.out.println(char[])
but then the value of a[0][0] which is 'x1' is not one-char-string and can not
be converted to char. So explicit function selector should be specified.

*** This bug has been marked as a duplicate of 225831 ***

Comment 3

[Igor Bukanov]

Trageting as resolved against 1.5R5