gcc/testsuite/gcc.dg/plugin/test-uaccess.h

/* Shared header for testcases for copy_from_user/copy_to_user.  */

/* Adapted from include/linux/compiler.h  */

#define __user

/* Adapted from include/asm-generic/uaccess.h  */

extern long copy_from_user(void *to, const void __user *from, long n);
extern long copy_to_user(void __user *to, const void *from, long n);