[qemu.git] / compiler.h

/* public domain */

#ifndef COMPILER_H
#define COMPILER_H

#include "config-host.h"

#define QEMU_NORETURN __attribute__ ((__noreturn__))
#ifdef CONFIG_GCC_ATTRIBUTE_WARN_UNUSED_RESULT
#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#else
#define QEMU_WARN_UNUSED_RESULT
#endif

#define QEMU_BUILD_BUG_ON(x) \
    typedef char qemu_build_bug_on__##__LINE__[(x)?-1:1];

#if defined __GNUC__
# if (__GNUC__ < 4) || \
     defined(__GNUC_MINOR__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 4)
   /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
#  define GCC_ATTR __attribute__((__unused__, format(printf, 1, 2)))
#  define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
# else
   /* Use gnu_printf when supported (qemu uses standard format strings). */
#  define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
#  define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
# endif
#else
#define GCC_ATTR /**/
#define GCC_FMT_ATTR(n, m)
#endif

#endif /* COMPILER_H */
Commit	Line	Data
5c026320 LC	1	/* public domain */
	2
	3	#ifndef COMPILER_H
	4	#define COMPILER_H
	5
	6	#include "config-host.h"
	7
	8	#define QEMU_NORETURN __attribute__ ((__noreturn__))
	9	#ifdef CONFIG_GCC_ATTRIBUTE_WARN_UNUSED_RESULT
	10	#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
	11	#else
	12	#define QEMU_WARN_UNUSED_RESULT
	13	#endif
	14
	15	#define QEMU_BUILD_BUG_ON(x) \
	16	typedef char qemu_build_bug_on__##__LINE__[(x)?-1:1];
	17
	18	#if defined __GNUC__
	19	# if (__GNUC__ < 4) \|\| \
	20	defined(__GNUC_MINOR__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 4)
	21	/* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
	22	# define GCC_ATTR __attribute__((__unused__, format(printf, 1, 2)))
	23	# define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
	24	# else
	25	/* Use gnu_printf when supported (qemu uses standard format strings). */
	26	# define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
	27	# define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
	28	# endif
	29	#else
	30	#define GCC_ATTR /**/
	31	#define GCC_FMT_ATTR(n, m)
	32	#endif
	33
	34	#endif /* COMPILER_H */