+static inline void *xmalloc(size_t size)
+{
+ void *p = malloc(size);
+
+ if (!p)
+ die("insufficient memory");
+
+ memset(p, 0, size);
+ return p;
+}
+
+static inline void *xcalloc(size_t count, size_t size)
+{
+ void *p = calloc(count, size);
+
+ if (!p)
+ die("insufficient memory");
+
+ return p;
+}
+
+static inline void *xrealloc(void *p, size_t size)
+{
+ p = realloc(p, size);
+ if (!p)
+ die("insufficient memory");
+
+ return p;
+}
+