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unknown 40d596c200 Bug#29856: Insufficient buffer space led to a server crash.
The subst_spvars function is used to create query string with SP variables 
substituted with their values. This string is used later for the binary log
and for the query cache. The problem is that the
query_cache_send_result_to_client function requires some additional space
after the query to store database name and query cache flags. This 
space wasn't reserved by the subst_spvars function which led to a memory
corruption and crash.

Now the subst_spvars function reserves additional space for the query cache.


mysql-test/t/query_cache.test:
  Added a test case for the bug#29856: Insufficient buffer space led to a server crash.
mysql-test/r/query_cache.result:
  Added a test case for the bug#29856: Insufficient buffer space led to a server crash.
sql/sp_head.cc:
  Bug#29856: Insufficient buffer space led to a server crash.
  Now the subst_spvars function reserves additional space for the query cache.
2007-07-28 15:01:29 +04:00
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This is a release of MySQL, a dual-license SQL database server.
MySQL is brought to you by the MySQL team at MySQL AB.

License information can be found in these files:
- For GPL (free) distributions, see the COPYING file and
  the EXCEPTIONS-CLIENT file.
- For commercial distributions, see the LICENSE.mysql file.


For further information about MySQL or additional documentation, see:
- The latest information about MySQL: http://www.mysql.com
- The current MySQL documentation: http://dev.mysql.com/doc

Some manual sections of special interest:

- If you are migrating from an older version of MySQL, please read the
  "Upgrading from..." section first!
- To see what MySQL can do, take a look at the features section.
- For installation instructions, see the Installing and Upgrading chapter.
- For the new features/bugfix history, see the Change History appendix.
- For the currently known bugs/misfeatures (known errors) see the Problems
  and Common Errors appendix.
- For a list of developers and other contributors, see the Credits
  appendix.

A local copy of the MySQL Reference Manual can be found in the Docs
directory in GNU Info format.  You can also browse the manual online or
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file.

************************************************************

IMPORTANT:

Bug or error reports should be sent to http://bugs.mysql.com.