78       size_t pagesize = getpagesize ();  in do_test()  local
79       void *firstpage_backup = xmalloc (pagesize);  in do_test()
80       void *lastpage_backup = xmalloc (pagesize);  in do_test()
93       char *ptr_aligned = (char *) ((uintptr_t) ptr & ~(pagesize - 1));  in do_test()
98       memcpy (firstpage_backup, ptr_aligned, pagesize);  in do_test()
99       memcpy (lastpage_backup, ptr_aligned + big_size - pagesize,  in do_test()
100 	      pagesize);  in do_test()
101       xmmap (ptr_aligned - pagesize, pagesize + big_size + pagesize,  in do_test()
104       memcpy (ptr_aligned, firstpage_backup, pagesize);  in do_test()
105       memcpy (ptr_aligned + big_size - pagesize, lastpage_backup,  in do_test()
106 	      pagesize);  in do_test()
112 	if (mmap (NULL, pagesize, PROT_READ, MAP_FILE | MAP_PRIVATE, fd, 0)  in do_test()