Feature #171 ยป 0042-Implement-fc__fallthrough-for-clang.patch
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for C++ code */
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#if defined(__GNUC__) && __GNUC__ >= 7
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#define fc__fallthrough __attribute__((fallthrough))
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#elif defined (__clang__) && __clang_major__ >= 12
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#define fc__fallthrough __attribute__((fallthrough))
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#else
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#define fc__fallthrough
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#endif
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