From: Zardosht Kasheff
Date: September 29 2009 3:30pm
Subject: Re: can show engine status ever return an error?
List-Archive: http://lists.mysql.com/internals/37335
Message-Id: <2f9663ba0909290830w60dac7c8x6ba5e0b3ae456585@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Thanks Sergei,

I filed the following bug:

http://bugs.mysql.com/bug.php?id=3D47719

-Zardosht

On Tue, Sep 29, 2009 at 11:26 AM, Sergei Golubchik <serg@stripped> wrote:
> Hi, Zardosht!
>
> On Sep 29, Zardosht Kasheff wrote:
>>
>>
>> In the function ha_show_status, in handler.cc, I see the following
>> code to end the function:
>>
>> =A0 if (!result)
>> =A0 =A0 my_eof(thd);
>> =A0 return result;
>> }
>>
>> So, if the handlerton's show_status function successfully returns,
>> my_eof(thd) is called, and the assert is not hit in protocol.cc.
>> However, if show_status returns an error, then nothing is called here,
>> causing the assert.
>
> This looks like a bug to me.
>
>> Is there something simple and safe that can be done that allows
>> show_status to return an error in some cases, but not causing a crash?
>
> The simple and safe workaround that you can do is to call my_error()
> when you have an error. It will set the proper status in the
> Diagnostics_area.
>
> Regards / Mit vielen Gr=FC=DFen,
> Sergei
>
> --
> =A0 __ =A0___ =A0 =A0 ___ ____ =A0__
> =A0/ =A0|/ =A0/_ __/ __/ __ \/ / =A0 Sergei Golubchik <serg@stripped>
> =A0/ /|_/ / // /\ \/ /_/ / /__ =A0Principal Software Engineer/Server Arch=
itect
> /_/ =A0/_/\_, /___/\___\_\___/ =A0Sun Microsystems GmbH, HRB M=FCnchen 16=
1028
> =A0 =A0 =A0 <___/ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Sonnenallee 1, 85551=
 Kirchheim-Heimstetten
> Gesch=E4ftsf=FChrer: Thomas Schroeder, Wolfgang Engels, Wolf Frenkel
> Vorsitzender des Aufsichtsrates: Martin H=E4ring
>