Re: Possible regression after upgrade to [9.0.119] (java.lang.IllegalArgumentException: newPosition > limit: (8175 > 9))

Mark Thomas <[email protected]> Wed, 1 Jul 2026 09:54:30 +0100

Newsgroups	gmane.comp.jakarta.tomcat.user
Message-ID	<[email protected]>

On 26/06/2026 10:09, Mark Thomas wrote:
> On 26/06/2026 07:57, Stankov. Yavor wrote:
> 
> <snip/>
> 
>> I'd like to ask:
>>
>>    1.  Has anyone seen a similar IllegalArgumentException originating 
>> from B2CConverter / InputBuffer after upgrading to 9.0.119?
> 
> I haven't see any other reports so far.
> 
>>    2.  Are there any known changes in the request body decoding path 
>> that could explain this behavior?
> 
> There are changes to B2CConverter (meant to improve EOF handling) that 
> might be the cause.
> 
>>    3.  Is there any additional logging or diagnostics you would 
>> recommend to determine whether this is a Tomcat issue or an 
>> application/environment issue?
> 
> It looks like a Tomcat issue. If you can provide a minimal test case 
> that recreates the issue then we can investigate further.

I have received a test case and can reproduce the issue. I am working on 
a fix. The plan is for the fix to be in the July releases.

Mark