#define xstrndup(s, n) xstrndup_f(s, n, __FILE__, __LINE__)
/** \brief utility macro which calls malloc_trav_f */
#define xmalloc_trav(s) xmalloc_trav_f(s, __FILE__, __LINE__)
#define xstrndup(s, n) xstrndup_f(s, n, __FILE__, __LINE__)
/** \brief utility macro which calls malloc_trav_f */
#define xmalloc_trav(s) xmalloc_trav_f(s, __FILE__, __LINE__)