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-rw-r--r--lib/macros.h14
1 files changed, 13 insertions, 1 deletions
diff --git a/lib/macros.h b/lib/macros.h
index a61f80e..6369599 100644
--- a/lib/macros.h
+++ b/lib/macros.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2009-2015 Richard Braun.
+ * Copyright (c) 2009-2018 Richard Braun.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -91,4 +91,16 @@
#define __unused __attribute__((unused))
#endif
+#ifndef __used
+#define __used __attribute__((used))
+#endif
+
+#ifndef __fallthrough
+#if __GNUC__ >= 7
+#define __fallthrough __attribute__((fallthrough))
+#else /* __GNUC__ >= 7 */
+#define __fallthrough
+#endif /* __GNUC__ >= 7 */
+#endif
+
#endif /* _MACROS_H */