Here is the backtrace from another run (a different reason too, but similar backtrace).

Core was generated by `/usr/bin/perl problem_script.pl 972 10.30.'.
Program terminated with signal 11, Segmentation fault.
#0  my_stat (path=0x7fffbbc78110 "/usr/share/mysql/charsets/Index.xml"
+, stat_area=0x7fffbbc77fe0, my_flags=0)
    at /export/home/pb2/build/sb_0-10180689-1378750483.08/rpm/BUILD/my
+sql-5.5.34/mysql-5.5.34/mysys/my_lib.c:415
415     /export/home/pb2/build/sb_0-10180689-1378750483.08/rpm/BUILD/m
+ysql-5.5.34/mysql-5.5.34/mysys/my_lib.c: No such file or directory.
        in /export/home/pb2/build/sb_0-10180689-1378750483.08/rpm/BUIL
+D/mysql-5.5.34/mysql-5.5.34/mysys/my_lib.c

(gdb) bt

#0  my_stat (path=0x7fffbbc78110 "/usr/share/mysql/charsets/Index.xml"
+, stat_area=0x7fffbbc77fe0, my_flags=0)
    at /export/home/pb2/build/sb_0-10180689-1378750483.08/rpm/BUILD/my
+sql-5.5.34/mysql-5.5.34/mysys/my_lib.c:415

#1  0x00002ae583491d74 in my_read_charset_file (filename=0x2 <Address 
+0x2 out of bounds>, myflags=0)
    at /export/home/pb2/build/sb_0-10180689-1378750483.08/rpm/BUILD/my
+sql-5.5.34/mysql-5.5.34/mysys/charset.c:364

#2  0x00002ae583492615 in init_available_charsets () at /export/home/p
+b2/build/sb_0-10180689-1378750483.08/rpm/BUILD/mysql-5.5.34/mysql-5.5
+.34/mysys/charset.c:458

#3  0x00000032ff60c1d3 in pthread_once () from /lib64/libpthread.so.0

#4  0x00002ae583492e48 in get_charset_by_csname (cs_name=0x177201e0 "l
+atin1", cs_flags=32, flags=1571489488)
    at /export/home/pb2/build/sb_0-10180689-1378750483.08/rpm/BUILD/my
+sql-5.5.34/mysql-5.5.34/mysys/charset.c:644

#5  0x00002ae58347883f in mysql_set_character_set_with_default_collati
+on (mysql=0x1771fce0)
    at /export/home/pb2/build/sb_0-10180689-1378750483.08/rpm/BUILD/my
+sql-5.5.34/mysql-5.5.34/sql-common/client.c:2233

#6  mysql_init_character_set (mysql=0x1771fce0) at /export/home/pb2/bu
+ild/sb_0-10180689-1378750483.08/rpm/BUILD/mysql-5.5.34/mysql-5.5.34/s
+ql-common/client.c:2272

#7  0x00002ae58347b32d in mysql_real_connect (mysql=0x1771fce0, host=0
+x1771b5a0 "10.30.30.73", user=0x178cd690 "<foo>", passwd=0x178cd6e0 "
+<foobar>", db=0x1771b4d0 "<bar>", port=3306,
    unix_socket=0x0, client_flag=131074) at /export/home/pb2/build/sb_
+0-10180689-1378750483.08/rpm/BUILD/mysql-5.5.34/mysql-5.5.34/sql-comm
+on/client.c:3436

#8  0x00002ae583230fd5 in mysql_dr_connect (dbh=<value optimized out>,
+ sock=0x1771fce0, mysql_socket=0x0, host=0x1771b5a0 "10.30.30.73", po
+rt=0xe689e98 "x\265`\016", user=<value optimized out>,
    password=<value optimized out>, dbname=0x1771b4d0 "<bar>", imp_dbh
+=0x1771f700) at dbdimp.c:1892

#9  0x00002ae583232188 in my_login (my_perl=0xe301010, dbh=0xe687c48, 
+imp_dbh=0x1771f700) at dbdimp.c:2004

#10 0x00002ae583233372 in mysql_db_login (dbh=0xe687c48, imp_dbh=0x177
+1f700, dbname=0x17720ae0 "<bar>:10.30.30.73:3306", user=0x1771b2f0 "<
+foo>", password=0x178cd450 "<foobar>") at dbdimp.c:2055

#11 0x00002ae58323aa77 in XS_DBD__mysql__db__login (my_perl=0xe301010,
+ cv=<value optimized out>) at mysql.xsi:104

#12 0x000000000048906f in Perl_pp_entersub ()

#13 0x000000000048765e in Perl_runops_standard ()

#14 0x000000000043097f in Perl_call_sv ()

#15 0x00002ae55e4f15f1 in XS_DBI_dispatch () from /usr/local/lib/perl5
+/site_perl/5.10.1/x86_64-linux-thread-multi/auto/DBI/DBI.so

#16 0x000000000048906f in Perl_pp_entersub ()

#17 0x000000000048765e in Perl_runops_standard ()

#18 0x00000000004316a5 in perl_run ()

#19 0x000000000041d4ad in main ()

(gdb)
[download]