#define FIRM_ADT_XMALLOC_H
#include <stddef.h>
+#include <stdlib.h>
/* xmalloc() & friends. */
void *xcalloc(size_t num, size_t size);
void *xrealloc(void *ptr, size_t size);
char *xstrdup(const char *str);
-void free(void *ptr);
#define xfree(ptr) free(ptr)