Indirectly closedir(3) from exit(3).

libc/dirent/dnewdir.cpp

@@ -39,6 +39,7 @@ extern "C" DIR* dnewdir(void)
 		return NULL;
 	dir->flags = 0;
 	dir->free_func = dfreedir;
+	dir->closedir_indirect = closedir;
 	dregister(dir);
 	return dir;
 }

libc/include/DIR.h

@@ -59,6 +59,7 @@ struct DIR
 	int (*close_func)(void* user);
 	void (*free_func)(DIR* dir);
 	/* Application writers shouldn't use anything beyond this point. */
+	int (*closedir_indirect)(DIR*);
 	DIR* prev;
 	DIR* next;
 	struct dirent* entry;

libc/stdlib/exit.cpp

@@ -62,7 +62,7 @@ extern "C" void exit(int status)
 	pthread_mutex_lock(&__first_file_lock);
 
 	while ( __first_dir )
-		closedir(__first_dir);
+		__first_dir->closedir_indirect(__first_dir);
 	while ( __first_file )
 		fclose(__first_file);