1  typedef struct libxml_xpathCallback { 
       2    void *ns_uri; 
       3  } libxml_xpathCallback; 
       4   
       5  typedef libxml_xpathCallback libxml_xpathCallbackArray[]; 
       6   
       7  libxml_xpathCallbackArray *libxml_xpathCallbacks; 
       8  
       9  void foo1(void);
      10   
      11  void 
      12  foo (void) 
      13  { 
      14    if ((*libxml_xpathCallbacks)[3].ns_uri != ((void *)0)) foo1(); 
      15  }