tlx
attribute_fallthrough.hpp
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1 /*******************************************************************************
2  * tlx/define/attribute_fallthrough.hpp
3  *
4  * Part of tlx - http://panthema.net/tlx
5  *
6  * Copyright (C) 2015-2017 Timo Bingmann <tb@panthema.net>
7  *
8  * All rights reserved. Published under the Boost Software License, Version 1.0
9  ******************************************************************************/
10 
11 #ifndef TLX_DEFINE_ATTRIBUTE_FALLTHROUGH_HEADER
12 #define TLX_DEFINE_ATTRIBUTE_FALLTHROUGH_HEADER
13 
14 namespace tlx {
15 
16 //! \addtogroup tlx_define
17 //! \{
18 
19 /******************************************************************************/
20 // __attribute__ ((fallthrough))
21 
22 #if defined(__GNUC__) && __GNUC__ >= 7
23 #define TLX_ATTRIBUTE_FALLTHROUGH __attribute__ ((fallthrough))
24 #elif defined(__clang__)
25 #define TLX_ATTRIBUTE_FALLTHROUGH [[clang::fallthrough]]
26 #else
27 #define TLX_ATTRIBUTE_FALLTHROUGH
28 #endif
29 
30 //! \}
31 
32 } // namespace tlx
33 
34 #endif // !TLX_DEFINE_ATTRIBUTE_FALLTHROUGH_HEADER
35 
36 /******************************************************************************/