Author: ericwf Date: Fri Feb 19 18:16:41 2016 New Revision: 261381 URL: http://llvm.org/viewvc/llvm-project?rev=261381&view=rev Log: 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 Added: libcxx/trunk/include/stdbool.h Added: libcxx/trunk/include/stdbool.h URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/stdbool.h?rev=261381&view=auto ============================================================================== --- libcxx/trunk/include/stdbool.h (added) +++ libcxx/trunk/include/stdbool.h Fri Feb 19 18:16:41 2016 @@ -0,0 +1,39 @@ +// -*- C++ -*- +//===--------------------------- stdbool.h --------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +#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 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
