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29.5.2 Debugging a MySQL Client
To be able to debug a MySQL client with the integrated debug
package, you should configure MySQL with
-DWITH_DEBUG=1. See
Section 2.9.7, “MySQL Source-Configuration Options”.
Before running a client, you should set the
MYSQL_DEBUG environment variable:
shell> MYSQL_DEBUG=d:t:O,/tmp/client.trace
shell> export MYSQL_DEBUG
This causes clients to generate a trace file in
/tmp/client.trace.
If you have problems with your own client code, you should attempt to connect to the server and run your query using a client that is known to work. Do this by running mysql in debugging mode (assuming that you have compiled MySQL with debugging on):
shell> mysql --debug=d:t:O,/tmp/client.traceThis provides useful information in case you mail a bug report. See Section 1.7, “How to Report Bugs or Problems”.
If your client crashes at some 'legal' looking code, you should
check that your mysql.h include file
matches your MySQL library file. A very common mistake is to use
an old mysql.h file from an old MySQL
installation with new MySQL library.
Document created the 26/06/2006, last modified the 26/10/2018
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