32 lines
1.1 KiB
C
32 lines
1.1 KiB
C
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/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_SYSTEM_FALLTHROUGH_H_
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#define RTC_BASE_SYSTEM_FALLTHROUGH_H_
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// Macro to be used for switch-case fallthrough (required for enabling
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// -Wimplicit-fallthrough warning on Clang).
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// This macro definition must not be included from public headers! Because
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// clang's diagnostic checks if there's a macro expanding to
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// [[clang::fallthrough]] defined, and if so it suggests the first macro
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// expanding to it. So if this macro is included in a public header, clang may
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// suggest it instead of the client's own macro, which can cause confusion.
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#ifdef __clang__
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#define RTC_FALLTHROUGH() [[clang::fallthrough]]
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#else
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#define RTC_FALLTHROUGH() \
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do { \
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} while (0)
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#endif
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#endif // RTC_BASE_SYSTEM_FALLTHROUGH_H_
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