src/libMesh/chrono.c:29: error: NULL_DEREFERENCE
  pointer `ptm` last assigned on line 28 could be null and is dereferenced at line 29, column 9.
Showing all 3 steps of the trace


src/libMesh/chrono.c:23:1: start of procedure diftim()
21.   
22.   /* return elapsed time in secs. */
23. > static double diftim(time_t t2,time_t t1) {
24.     struct  tm  *ptm;
25.     double  tim;

src/libMesh/chrono.c:28:3: 
26.     int     hh1,mm1,ss1,hh2,mm2,ss2;
27.   
28. >   ptm = localtime(&t1);
29.     hh1 = ptm->tm_hour;
30.     mm1 = ptm->tm_min;

src/libMesh/chrono.c:29:3: 
27.   
28.     ptm = localtime(&t1);
29. >   hh1 = ptm->tm_hour;
30.     mm1 = ptm->tm_min;
31.     ss1 = ptm->tm_sec;