forked from KolibriOS/kolibrios
49 lines
2.0 KiB
C++
49 lines
2.0 KiB
C++
/**************************************************************************
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*
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* Copyright 2014 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Including system's headers inside `extern "C" { ... }` is not safe, as system
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* headers may have C++ code in them, and C++ code inside extern "C"
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* leads to syntatically incorrect code.
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*
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* This is because putting code inside extern "C" won't make __cplusplus define
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* go away, that is, the system header being included thinks is free to use C++
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* as it sees fits.
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*
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* Including non-system headers inside extern "C" is not safe either, because
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* non-system headers end up including system headers, hence fall in the above
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* case too.
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*
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* Conclusion, includes inside extern "C" is simply not portable.
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*
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*
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* This header helps surface these issues.
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*/
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#ifdef __cplusplus
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template<class T> class _IncludeInsideExternCNotPortable;
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#endif
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