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Bug #78308 IntlPartsIterator key is off by one when created with KEY_LEFT
Submitted: 2019-07-17 19:24 UTC Modified: 2019-07-20 11:24 UTC
From: smokey101stair at gmail dot com Assigned:
Status: Verified Package: intl (PECL)
PHP Version: Irrelevant OS:
Private report: No CVE-ID: None
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 [2019-07-17 19:24 UTC] smokey101stair at gmail dot com 
Description:
------------
When creating an IntlPartsIterator with a key_type of IntlPartsIterator::KEY_LEFT, the returned key value is off by one after the first key. So for the string "ABC" you would get 0, 2, 3, instead of the expected 0, 1, 2.

Test script:
---------------
https://3v4l.org/O8374

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 [2019-07-18 18:24 UTC] smokey101stair at gmail dot com 
Looks like passing IntlPartsIterator::KEY_RIGHT also exhibits the same problem.

https://3v4l.org/SNUAX
 [2019-07-20 11:24 UTC] cmb@php.net
-Status: Open +Status: Verified
 [2019-07-20 11:24 UTC] cmb@php.net 
Although the index is properly adjusted[1], it is than increased
once more[2].

[1] <https://github.com/php/php-src/blob/php-7.2.20/ext/intl/breakiterator/breakiterator_iterators.cpp#L162-L166>
[2] <https://github.com/php/php-src/blob/php-7.2.20/ext/intl/common/common_enum.cpp#L260>
 [2019-07-20 13:51 UTC] cmb@php.net 
The following pull request has been associated:

Patch Name: Fix #78308: IntlPartsIterator key is wrong for KEY_LEFT/KEY_RIGHT
On GitHub:  https://github.com/php/php-src/pull/4446
Patch:      https://github.com/php/php-src/pull/4446.patch
 
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