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llvm-project/libcxx/include/stdbool.h

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Add stdbool.h wrapper for libc++ Summary: According to the C++ standard <stdbool.h> isn't allowed to define `true` `false` or `bool`. However these macros are sometimes defined by the compilers `stdbool.h`. Clang defines the macros whenever `__STRICT_ANSI__` isn't defined (ie `-std=gnu++11`). New GCC versions define the macros in C++03 mode only, older GCC versions (4.9 and before) always define the macros. This patch adds a wrapper header for `stdbool.h` that undefs the required macros. Reviewers: mclow.lists, rsmith, EricWF Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D16346 llvm-svn: 261381
2016-02-20 08:16:41 +08:00
// -*- C++ -*-
//===--------------------------- stdbool.h --------------------------------===//
//
Update more file headers across all of the LLVM projects in the monorepo to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
2019-01-19 18:56:40 +08:00
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
Add stdbool.h wrapper for libc++ Summary: According to the C++ standard <stdbool.h> isn't allowed to define `true` `false` or `bool`. However these macros are sometimes defined by the compilers `stdbool.h`. Clang defines the macros whenever `__STRICT_ANSI__` isn't defined (ie `-std=gnu++11`). New GCC versions define the macros in C++03 mode only, older GCC versions (4.9 and before) always define the macros. This patch adds a wrapper header for `stdbool.h` that undefs the required macros. Reviewers: mclow.lists, rsmith, EricWF Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D16346 llvm-svn: 261381
2016-02-20 08:16:41 +08:00
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_STDBOOL_H
#define _LIBCPP_STDBOOL_H
/*
stdbool.h synopsis
Macros:
__bool_true_false_are_defined
*/
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
#include_next <stdbool.h>
#ifdef __cplusplus
#undef bool
#undef true
#undef false
#undef __bool_true_false_are_defined
#define __bool_true_false_are_defined 1
#endif
#endif // _LIBCPP_STDBOOL_H