src/libMesh/memory.c:138: error: NULL_DEREFERENCE
  pointer `mstack` last assigned on line 128 could be null and is dereferenced at line 138, column 5.
Showing all 9 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 false. Leaving loop
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:132:5: 
130.       for (i=1; i<MAXMEM; i++)
131.         mstack[i].nxt    = i+1;
132. >     cur   = 1;
133.       stack = 0;
134.     }

src/libMesh/memory.c:133:5: 
131.         mstack[i].nxt    = i+1;
132.       cur   = 1;
133. >     stack = 0;
134.     }
135.   

src/libMesh/memory.c:137:8: Taking true branch
135.   
136.     /* store pointer, size */
137.     if ( stack < MAXMEM ) {
              ^
138.       mstack[cur].ptr  = calloc(nelem,elsize);
139.       if ( !mstack[cur].ptr )  return(0);

src/libMesh/memory.c:138:5: 
136.     /* store pointer, size */
137.     if ( stack < MAXMEM ) {
138. >     mstack[cur].ptr  = calloc(nelem,elsize);
139.       if ( !mstack[cur].ptr )  return(0);
140.