about the stats on 5.2.0

[Cheng Yi]

Hi:

I have trouble using the stats API on 5.2.0

first of all the API sample provided not working. These API are not found in 
the 5.2.0 ts/ts.h file

Then I tried to guess by reading the ts.h file and write following:

int user_session_count_stat = TSStatCreate(user_session_count_name, 
TS_RECORDDATATYPE_INT, TS_STAT_NON_PERSISTENT, TS_STAT_SYNC_COUNT);

TSStatIntIncrement(user_session_count_stat, 1l);


but when I run I got 
0   traffic_server                      0x0000000105af6841 
_Z19crash_logger_invokeiP9__siginfoPv + 145
1   libsystem_platform.dylib            0x00007fff8f0f8f1a _sigtramp + 26
2   ???                                 0x00007f960acdc180 0x0 + 140282403078528
3   traffic_server                      0x0000000105b3305f TSStatIntIncrement + 
47


Please help.

Thanks.

Cheng Yi