aria_pack crashes in get_statistic or produces error 132

Core was generated by `/data/repo/git/5.5/storage/maria/aria_pack /data/repo/git/5.5/mysql-test/var/my'.

Program terminated with signal 11, Segmentation fault.

#0  0x000000000040b80d in get_statistic (mrg=0x7fff5df72c10, huff_counts=0x168afd0) at 5.5/storage/maria/maria_pack.c:1066

1066		  count->counts[(uchar) *pos]++;

#0  0x000000000040b80d in get_statistic (mrg=0x7fff5df72c10, huff_counts=0x168afd0) at 5.5/storage/maria/maria_pack.c:1066

#1  0x000000000040a541 in compress (mrg=0x7fff5df72c10, result_table=0x0) at 5.5/storage/maria/maria_pack.c:574

#2  0x0000000000409742 in main (argc=0, argv=0x1646670) at 5.5/storage/maria/maria_pack.c:234

Thread 1 (Thread 0x7ffd84601720 (LWP 30617)):

#0  0x000000000040b80d in get_statistic (mrg=0x7fff5df72c10, huff_counts=0x168afd0) at 5.5/storage/maria/maria_pack.c:1066

#1  0x000000000040a541 in compress (mrg=0x7fff5df72c10, result_table=0x0) at 5.5/storage/maria/maria_pack.c:574

#2  0x0000000000409742 in main (argc=0, argv=0x1646670) at 5.5/storage/maria/maria_pack.c:234

--let $datadir = `SELECT @@datadir`

drop table if exists t;

create table t (

  f1 varchar(40) not null,

  f2 tinytext not null,

  f3 varchar(50) not null,

  index (f1)

) engine=Aria charset utf8;

insert into t 

  select 'foo1','foobar1','bar' union

  select 'foo2','foobar2','bar';

--exec $MARIA_PACK $datadir/test/t.MAI

drop table t;