lib/rand: get rid of unused MAX_SEED_BUCKETS

[fio.git] / compiler / compiler.h

diff --git a/compiler/compiler.h b/compiler/compiler.h
index 8a784b9269b6a66419fc7f51cb453f047309653f..fefadeaa89fc5e4043d3024a98488f07fe9cbdb9 100644 (file)
--- a/compiler/compiler.h
+++ b/compiler/compiler.h
@@ -62,8 +62,19 @@
 #endif
 
 #ifdef FIO_INTERNAL
-#define ARRAY_SIZE(x)    (sizeof((x)) / (sizeof((x)[0])))
-#define FIELD_SIZE(s, f) (sizeof(((__typeof__(s))0)->f))
+#define FIO_ARRAY_SIZE(x)    (sizeof((x)) / (sizeof((x)[0])))
+#define FIO_FIELD_SIZE(s, f) (sizeof(((__typeof__(s))0)->f))
+#endif
+
+#ifndef __has_attribute
+#define __has_attribute(x) __GCC4_has_attribute_##x
+#define __GCC4_has_attribute___fallthrough__   0
+#endif
+
+#if __has_attribute(__fallthrough__)
+#define fio_fallthrough         __attribute__((__fallthrough__))
+#else
+#define fio_fallthrough        do {} while (0)  /* fallthrough */
 #endif
 
 #endif