text: #pragma once
  
  #include <sys/cdefs.h>
  #include <sys/types.h>
  
  __BEGIN_DECLS
  
  void* malloc(size_t);
  void free(void*);
  void* calloc(size_t nmemb, size_t);
  void* realloc(void *ptr, size_t);
  
  void exit(int status);
  void abort();
  
  __END_DECLS
  