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38 lines
901 B
C++
38 lines
901 B
C++
/* -*- tab-width: 4; -*- */
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/* vi: set sw=2 ts=4 expandtab: */
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/* Copyright 2019-2018 The Khronos Group Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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/* I'm extending this beyond the purpose implied by its name rather than creating
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* a new file to hold the FALLTHROUGH declaration as this
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* file is already included in most places FALLTHROUGH
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* is needed.
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*/
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#ifndef _UNUSED_H
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#define _UNUSED_H
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#if (__cplusplus >= 201703L)
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#define MAYBE_UNUSED [[maybe_unused]]
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#elif __GNUC__ || __clang__
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#define MAYBE_UNUSED __attribute__((unused))
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#else
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// Boohoo. VC++ has no equivalent
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#define MAYBE_UNUSED
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#endif
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#define U_ASSERT_ONLY MAYBE_UNUSED
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// For unused parameters of c functions. Portable.
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#define UNUSED(x) (void)(x)
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#if !__clang__ && __GNUC__ // grumble ... clang ... grumble
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#define FALLTHROUGH __attribute__((fallthrough))
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#else
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#define FALLTHROUGH
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#endif
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#endif /* UNUSED_H */
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