attribs.h

/**
 * @file attribs.h
 * @author TheSomeMan
 * @date 2020-10-20
 * @copyright Ruuvi Innovations Ltd, license BSD-3-Clause.
 */

#ifndef ATTRIBS_H
#define ATTRIBS_H

#ifdef __cplusplus
extern "C" {
#endif

#ifdef __GNUC__
#define ATTRIBUTE(attrs) __attribute__(attrs)
#else
#define ATTRIBUTE(attrs)
#endif

#define ATTR_NORETURN                  ATTRIBUTE((noreturn))
#define ATTR_UNUSED                    ATTRIBUTE((unused))
#define ATTR_MALLOC                    ATTRIBUTE((malloc))
#define ATTR_MALLOC_SIZE(idx)          ATTRIBUTE((alloc_size(idx)))
#define ATTR_CALLOC_SIZE(nmemb, size)  ATTRIBUTE((alloc_size(nmemb, size)))
#define ATTR_RETURNS_NONNULL           ATTRIBUTE((returns_nonnull))
#define ATTR_CONST                     ATTRIBUTE((const))
#define ATTR_PURE                      ATTRIBUTE((pure))
#define ATTR_WARN_UNUSED_RESULT        ATTRIBUTE((warn_unused_result))
#define ATTR_PRINTF(idx_fmt, idx_args) ATTRIBUTE((format(printf, idx_fmt, idx_args)))
#define ATTR_NONNULL(arg_idx, ...)     ATTRIBUTE((nonnull(arg_idx, ##__VA_ARGS__)))

#if !defined(__clang__)
#if defined(__GNUC__) && (__GNUC__ >= 7)
#define ATTR_FALLTHROUGH __attribute__((fallthrough))
#else
#define ATTR_FALLTHROUGH (void)0
#endif
#else
#define ATTR_FALLTHROUGH (void)0
#endif

#ifdef __cplusplus
}
#endif

#endif // ATTRIBS_H