/*
* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2015-2018 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#if GNUC_PREREQ(3, 0)
# define SAME_TYPE(x, y) __builtin_types_compatible_p(typeof(x), typeof(y))
-# define BUILD_BUG_ON_ZERO(expr) (sizeof(int[-1 + 2 * !!(expr)]) * 0)
+# define FAIL_BUILD_ON_ZERO(expr) (sizeof(int[-1 + 2 * !!(expr)]) * 0)
/* &(a)[0] is a pointer and not an array, shouldn't be treated as the same */
-# define MUST_BE_ARRAY(a) BUILD_BUG_ON_ZERO(!SAME_TYPE((a), &(a)[0]))
+# define MUST_BE_ARRAY(a) FAIL_BUILD_ON_ZERO(!SAME_TYPE((a), &(a)[0]))
#else
# define SAME_TYPE(x, y) 0
# define MUST_BE_ARRAY(a) 0
#if GNUC_PREREQ(4, 1)
# define ALIGNOF(t_) __alignof__(t_)
#else
-# define ALIGNOF(t_) (sizeof(struct {char x_; t_ y_;}) - sizeof(t_))
+# define ALIGNOF(t_) (sizeof(struct { char x_; t_ y_; }) - sizeof(t_))
#endif
#if GNUC_PREREQ(4, 3)
# define ATTRIBUTE_ALLOC_SIZE(args) /* empty */
#endif
+#if GNUC_PREREQ(7, 0)
+# define ATTRIBUTE_FALLTHROUGH __attribute__((__fallthrough__))
+#else
+# define ATTRIBUTE_FALLTHROUGH ((void) 0)
+#endif
+
+#if GNUC_PREREQ(6, 0)
+# define DIAG_PUSH_IGNORE_TAUTOLOGICAL_COMPARE \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wtautological-compare\"");
+# define DIAG_POP_IGNORE_TAUTOLOGICAL_COMPARE \
+ _Pragma("GCC diagnostic pop");
+#else
+# define DIAG_PUSH_IGNORE_TAUTOLOGICAL_COMPARE /* empty */
+# define DIAG_POP_IGNORE_TAUTOLOGICAL_COMPARE /* empty */
+#endif
+
#endif /* !STRACE_GCC_COMPAT_H */