/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */

#ifndef _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.
 */
#ifndef GCC_VERSION
#define GCC_VERSION (__GNUC__ * 10000		\
		     + __GNUC_MINOR__ * 100	\
		     + __GNUC_PATCHLEVEL__)
#endif

#if __has_attribute(__fallthrough__)
# define fallthrough                    __attribute__((__fallthrough__))
#else
# define fallthrough                    do {} while (0)  /* fallthrough */
#endif

#if __has_attribute(__error__)
# define __compiletime_error(message) __attribute__((error(message)))
#endif

/* &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 __noreturn
#define __noreturn	__attribute__((noreturn))
#endif
#define __printf(a, b)	__attribute__((format(printf, a, b)))