> ------------------------------------------------------------
> revno: 3044.1.1
> revision-id: kristofer.pettersson@sun.com-20090729200708-cb0td7n9r5md0aa0
> parent: davi.arnaut@sun.com-20090728195938-qabe9ldm2l4k8xns
> committer: Kristofer Pettersson <kristofer.pettersson@sun.com>
> branch nick: mysql-5.1-bugteam
> timestamp: Wed 2009-07-29 22:07:08 +0200
> message:
>   Bug#44521 Executing a stored procedure as a prepared statement can sometimes cause
>             an assertion in a debug build.
>   
>   The reason is that the C API doesn't support multiple result sets for prepared
>   statements and attempting to execute a stored routine which returns multiple result
>   sets sometimes lead to a network error. The network error sets the diagnostic area
>   prematurely which later leads to the assert when an attempt is made to set a second
>   server state.
>   
>   This patch fixes the issue by changing the scope of the error code returned by
>   sp_instr_stmt::execute() to include any error which happened during the execution.
>   To assure that Diagnostic_area::is_sent really mean that the message was sent all
>   network related functions are checked for return status.