mirror of
https://github.com/matrix-construct/construct
synced 2024-12-25 15:04:10 +01:00
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_CTX_SLICE_USAGE_WARNING_H
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namespace ircd::ctx {
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inline namespace this_ctx
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{
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struct slice_usage_warning;
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}}
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#ifndef NDEBUG
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struct ircd::ctx::this_ctx::slice_usage_warning
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{
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string_view fmt;
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va_rtti ap;
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ulong start;
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template<class... args>
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slice_usage_warning(const string_view &fmt, args&&... ap)
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:slice_usage_warning{fmt, va_rtti{ap...}}
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{}
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explicit slice_usage_warning(const string_view &fmt, va_rtti &&ap);
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~slice_usage_warning() noexcept;
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};
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#else
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struct ircd::ctx::this_ctx::slice_usage_warning
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{
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#if defined(__clang__)
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template<class... args>
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slice_usage_warning(const string_view &fmt, args&&...)
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{}
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#else
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// In at least gcc 6.3.0 20170519, template param packs are not DCE'ed
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// so legacy varargs are used here.
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slice_usage_warning(const string_view &fmt, ...)
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{}
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#endif
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};
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#endif
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