/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _TOOLS_LINUX_COMPILER_H_ #error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." #endif /* * Common definitions for all gcc versions go here. */ #define GCC_VERSION (__GNUC__ * 10000 \ + __GNUC_MINOR__ * 100 \ + __GNUC_PATCHLEVEL__) #if GCC_VERSION >= 70000 && !defined(__CHECKER__) # define __fallthrough __attribute__ ((fallthrough)) #endif #if GCC_VERSION >= 40300 # define __compiletime_error(message) __attribute__((error(message))) #endif /* GCC_VERSION >= 40300 */ /* &a[0] degrades to a pointer: a different type from an array */ #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) #ifndef __pure #define __pure __attribute__((pure)) #endif #define noinline __attribute__((noinline)) #ifndef __packed #define __packed __attribute__((packed)) #endif #ifndef __noreturn #define __noreturn __attribute__((noreturn)) #endif #ifndef __aligned #define __aligned(x) __attribute__((aligned(x))) #endif #define __printf(a, b) __attribute__((format(printf, a, b))) #define __scanf(a, b) __attribute__((format(scanf, a, b))) #if GCC_VERSION >= 50100 #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 #endif