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https://issues.apache.org/jira/browse/LANG-805?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas BELOT updated LANG-805:
------------------------------

    Description: 
In commons-lang 2.6 line 250 :
{code}ch = chars[random.nextInt(gap) + start];{code}
-This line of code takes a random int to fetch a char in the _chars_ array 
regardless of its size.-
-(Besides _start_ is useless here)-

-Fixed version would be :-
{code}//ch = chars[random.nextInt(gap)%chars.length];{code}

  was:
In commons-lang 2.6 line 250 :
{code}ch = chars[random.nextInt(gap) + start];{code}
This line of code takes a random int to fetch a char in the _chars_ array 
regardless of its size.
(Besides _start_ is useless here)

Fixed version would be : 
{code}ch = chars[random.nextInt(gap)%chars.length];{code}

    
> RandomStringUtils.random(count, 0, 0, false, false, universe, random) always 
> throws java.lang.ArrayIndexOutOfBoundsException
> ----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: LANG-805
>                 URL: https://issues.apache.org/jira/browse/LANG-805
>             Project: Commons Lang
>          Issue Type: Bug
>    Affects Versions: 2.5, 2.6, 3.1
>            Reporter: Thomas BELOT
>            Priority: Blocker
>              Labels: patch
>             Fix For: 3.2, 2.7
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> In commons-lang 2.6 line 250 :
> {code}ch = chars[random.nextInt(gap) + start];{code}
> -This line of code takes a random int to fetch a char in the _chars_ array 
> regardless of its size.-
> -(Besides _start_ is useless here)-
> -Fixed version would be :-
> {code}//ch = chars[random.nextInt(gap)%chars.length];{code}

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