source: CIVL/mods/dev.civl.com/examples/languageFeatures/undefHeapPointer.cvl@ cb4d4f4

#include<civlc.cvh>
#include<stdlib.h>

typedef struct node_t {
  struct node_t *next;
} node_t;

void main() {
  node_t *n = (node_t *)malloc(sizeof(node_t));
  int x;
  
  if (n->next == NULL) // exception: reading undefined variable
    x==1;
}