'double free or corruption' when MySQL restarts (no replies)

Hello!

RHEL 5.2, mysql 5.1.46

I am having an issue where a persistent connection fail and I see a double free when the MySQL server daemon is restarted. My application works fine up until I issue the restart. I have captured the core file and examined the data in gdb. Looking at the trace below, frame 11 seems to indicate a problem with client.c. The problem disappears if I create a new connection everytime I call my doquery() function, however this is not very efficient. Has anybody experienced an issue like this?

I cut out only what I thought would be useful, I can provide the full stack trace if needed. Thanks for your assistance!
Brian


(gdb) frame 10
#10 0x000000000044b7f1 in mysql_send_query (mysql=0x40da18b0,
query=0x40da0ea0 "SELECT * FROM TableA WHERE FieldName='user' AND Source=5", length=103) at client.c:2894
2894 in client.c

(gdb) frame 11
#11 0x000000000044b859 in mysql_real_query (mysql=0x6bad, query=0x6bb0 <Address 0x6bb0 out of bounds>, length=6)
at client.c:2905
2905 client.c: No such file or directory.
in client.c
Current language: auto; currently c

(gdb) frame 12
#12 0x0000000000427df3 in doquery (conn=0x40da18b0, lm=0x1eaa15b0,
msg=0x40da0ea0 "SELECT * FROM TableA WHERE FieldName='user' AND Source=5" maxfail=60, logfreq=10, retry=1) at doquery.cpp:19
19 while(mysql_real_query(conn,msg,strlen(msg))) {