src/libMesh/memory.c:96: error: NULL_DEREFERENCE
  pointer `mstack` last assigned on line 86 could be null and is dereferenced at line 96, column 5.
Showing all 9 steps of the trace


src/libMesh/memory.c:81:1: start of procedure M_malloc()
79.   /* Allocates space for a block of at least size bytes,
80.      but does not initialize the space. */
81. > void *M_malloc(size_t size,char *call) {
82.     int   i;
83.   

src/libMesh/memory.c:85:9: Taking true branch
83.   
84.     /* check if first call */
85.     if ( !mstack ) {
              ^
86.       mstack = (Memstack *)calloc((1+MAXMEM),sizeof(Memstack));
87.       assert(mstack);

src/libMesh/memory.c:86:5: 
84.     /* check if first call */
85.     if ( !mstack ) {
86. >     mstack = (Memstack *)calloc((1+MAXMEM),sizeof(Memstack));
87.       assert(mstack);
88.       for (i=1; i<MAXMEM; i++)

src/libMesh/memory.c:88:10: 
86.       mstack = (Memstack *)calloc((1+MAXMEM),sizeof(Memstack));
87.       assert(mstack);
88. >     for (i=1; i<MAXMEM; i++)
89.         mstack[i].nxt    = i+1;
90.       cur   = 1;

src/libMesh/memory.c:88:15: Loop condition is false. Leaving loop
86.       mstack = (Memstack *)calloc((1+MAXMEM),sizeof(Memstack));
87.       assert(mstack);
88.       for (i=1; i<MAXMEM; i++)
                    ^
89.         mstack[i].nxt    = i+1;
90.       cur   = 1;

src/libMesh/memory.c:90:5: 
88.       for (i=1; i<MAXMEM; i++)
89.         mstack[i].nxt    = i+1;
90. >     cur   = 1;
91.       stack = 0;
92.     }

src/libMesh/memory.c:91:5: 
89.         mstack[i].nxt    = i+1;
90.       cur   = 1;
91. >     stack = 0;
92.     }
93.   

src/libMesh/memory.c:95:8: Taking true branch
93.   
94.     /* store pointer, size */
95.     if ( stack < MAXMEM ) {
             ^
96.       mstack[cur].ptr  = malloc(size);
97.       assert(mstack[cur].ptr);

src/libMesh/memory.c:96:5: 
94.     /* store pointer, size */
95.     if ( stack < MAXMEM ) {
96. >     mstack[cur].ptr  = malloc(size);
97.       assert(mstack[cur].ptr);
98.       mstack[cur].size = size;