1#define __user __attribute__((address_space(__user))) 2 3extern void fun(void *addr); 4 5static void foo(void __user *ptr) 6{ 7 return fun(ptr); 8} 9/* 10 * check-name: as-name attribute 11 * 12 * check-error-start 13as-name.c:7:20: warning: incorrect type in argument 1 (different address spaces) 14as-name.c:7:20: expected void *addr 15as-name.c:7:20: got void __user *ptr 16 * check-error-end 17 */ 18