at v4.12 21 lines 682 B view raw
1#ifndef _TOOLS_LINUX_COMPILER_H_ 2#error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." 3#endif 4 5/* 6 * Common definitions for all gcc versions go here. 7 */ 8#define GCC_VERSION (__GNUC__ * 10000 \ 9 + __GNUC_MINOR__ * 100 \ 10 + __GNUC_PATCHLEVEL__) 11 12#if GCC_VERSION >= 70000 && !defined(__CHECKER__) 13# define __fallthrough __attribute__ ((fallthrough)) 14#endif 15 16#if GCC_VERSION >= 40300 17# define __compiletime_error(message) __attribute__((error(message))) 18#endif /* GCC_VERSION >= 40300 */ 19 20/* &a[0] degrades to a pointer: a different type from an array */ 21#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))