Bug #11834 Re-execution of prepared statement with dropped function crashes server

Description:
Re-execution of prepared statement which invokes stored function which does not
exist by the moment of re-execution causes server to crash.

How to repeat:
--disable_warnings
drop function if exists f1;
drop function if exists f2;
--enable_warnings
create function f1() returns int return 10;
create function f2() returns int return f1();
prepare stmt from "select f2()";
execute stmt;
execute stmt;
drop function f1;
# The following crashes server
execute stmt;
drop function f2;

Fixed in 5.0.10 by the same patch as bug #8406.

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source repository of that product and will be incorporated into the
next release.

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Additional info:

Documented in 5.0.10 change history; closed.

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/internals/26827