/*
* 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
# define ATTRIBUTE_PACKED /* empty */
#endif
+#if GNUC_PREREQ(3, 0)
+# define SAME_TYPE(x, y) __builtin_types_compatible_p(typeof(x), typeof(y))
+# 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) FAIL_BUILD_ON_ZERO(!SAME_TYPE((a), &(a)[0]))
+#else
+# define SAME_TYPE(x, y) 0
+# define MUST_BE_ARRAY(a) 0
+#endif
+
#if GNUC_PREREQ(3, 0)
# define ATTRIBUTE_MALLOC __attribute__((__malloc__))
#else
# define ATTRIBUTE_SENTINEL /* empty */
#endif
+#if GNUC_PREREQ(4, 1)
+# define ALIGNOF(t_) __alignof__(t_)
+#else
+# define ALIGNOF(t_) (sizeof(struct { char x_; t_ y_; }) - sizeof(t_))
+#endif
+
#if GNUC_PREREQ(4, 3)
# define ATTRIBUTE_ALLOC_SIZE(args) __attribute__((__alloc_size__ args))
#else
# 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 */