0000121: c:forEach NoSuchElementException with len mod step != 0

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000121

[Resin]

minor

always

04-25-05 00:00

05-11-05 00:00

Reporter

sam

View Status

public

Assigned To

Priority

normal

Resolution

fixed

Status

closed

Product Version

3.0.12

Summary

0000121: c:forEach NoSuchElementException with len mod step != 0

Description

RSN-112
(rep by T Palmer)

The problem I found is when using the JSTL tag c:forEach with items and
with step > 1 (where the number of items is not divisible by the step).
For instance, this (using indexes rather than items) works:

<c:forEach var="index" begin="0" end="${fn:length(someWords)}"
step="3">

This does not:

<c:forEach var="item" items="${someWords}" step="3">

At the end of the iteration (if it doesn't line up perfectly), you get a
NoSuchElementException. This is the compiled code that causes the problem:

for (int _jsp_si_3 = _jsp_step_3; _jsp_si_3 > 1; _jsp_si_3--)
_jsp_iter_3.next();

There is no check for whether the next element exists. I think that the
behavior of this situation isn't incredibly explicit in the JSTL (1.1)
spec, but I would expect it to complete without an exception just as in
the case of the index looping mentioned earlier.

Additional Information

Attached Files

Relationships

Notes
(0000141) ferg 04-25-05 00:00	jsp/1cm6

Issue History
Date Modified	Username	Field	Change
04-25-05 00:00	sam	New Issue
11-30-05 00:00	administrator	Fixed in Version	=> 3.0.13

Mantis 1.0.0rc3[^]

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