[HP-UX]A very strange error while running a C program in HP-UX 11.0 system

grace_limi

So far I am sufferring from a strange error when running a C program in HP-UX 11.0, the error message is

===========================================================================
# ./gprs_jobok_rep

Pid 23708 received a SIGSEGV for stack growth failure.
Possible causes: insufficient memory or swap space,
or stack size exceeded maxssiz.
Memory fault(coredump)
===========================================================================

where 23708 is exactly the pid of the process gprs_jobok_rep.
To my surprise, there is actually not any evidence in the source codes leading to memory boom. The starting sections of main program are listed as the follows:

===========================================================================
void main( int argc, char *argv[])
{
   FILE *jobok_fptr, *jobok_dur_fptr;
   struct tm *tmptr;
   struct bin_taxi_diagnostics bi;
   struct bout_taxi_diagnostics bo;
   struct mdt_pkts_struct gpkt;
   long job = 0;
   time_t day_time, start_time;
   int i, j, mode = REP_WITHOUT_DEBUG;
   int day, mth, yr, num_days;
   int day_cnt, hr, tx_type, veh_id;
   unsigned char flag;
   char opt_dir[300];
   char start_date_str[11], jobok_repname[200], jobok_dur_repname[200];
   unsigned char pkttype, spkttype;

   if( argc < 5 )
   {
       printf( \"Usage: gprs_jobok_rep start_date num_days gprs_jobok_rep gprs_jobok_dur_rep\\n\" );
       printf( \"Eg.  : gprs_jobok_rep 01/07/2004 30\\n\" );
       printf( \"D - optional, to print debug statements\\n\" );
       exit( -1 );
   }
.................................................................
===========================================================================

Absolutely the program will fall into the code section with bold fond. There is no reason to get \"insufficient memory\" error. The problem has never occurred in other similar programs.