src/libMesh/memory.c:131: error: NULL_DEREFERENCE
  pointer `mstack` last assigned on line 128 could be null and is dereferenced at line 131, column 7.
Showing all 6 steps of the trace


src/libMesh/memory.c:123:1: start of procedure M_calloc()
121.      elsize bytes, and initializes the space to zeros.  
122.      Actual amount of space allocated is >=  nelem * elsize bytes. */
123. > void *M_calloc(size_t nelem, size_t elsize,char *call) {
124.     int    i;
125.   

src/libMesh/memory.c:127:9: Taking true branch
125.   
126.     /* check if first call */
127.     if ( !mstack ) {
               ^
128.       mstack = (Memstack *)calloc((1+MAXMEM),sizeof(Memstack));
129.       assert(mstack);

src/libMesh/memory.c:128:5: 
126.     /* check if first call */
127.     if ( !mstack ) {
128. >     mstack = (Memstack *)calloc((1+MAXMEM),sizeof(Memstack));
129.       assert(mstack);
130.       for (i=1; i<MAXMEM; i++)

src/libMesh/memory.c:130:10: 
128.       mstack = (Memstack *)calloc((1+MAXMEM),sizeof(Memstack));
129.       assert(mstack);
130. >     for (i=1; i<MAXMEM; i++)
131.         mstack[i].nxt    = i+1;
132.       cur   = 1;

src/libMesh/memory.c:130:15: Loop condition is true. Entering loop body
128.       mstack = (Memstack *)calloc((1+MAXMEM),sizeof(Memstack));
129.       assert(mstack);
130.       for (i=1; i<MAXMEM; i++)
                     ^
131.         mstack[i].nxt    = i+1;
132.       cur   = 1;

src/libMesh/memory.c:131:7: 
129.       assert(mstack);
130.       for (i=1; i<MAXMEM; i++)
131. >       mstack[i].nxt    = i+1;
132.       cur   = 1;
133.       stack = 0;