llvm-project/libcxx/include/__undef_macros

// -*- C++ -*-
//===------------------------ __undef_macros ------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//


#ifdef min
#if !defined(_LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS)
#if defined(_LIBCPP_WARNING)
_LIBCPP_WARNING("macro min is incompatible with C++.  Try #define NOMINMAX "
                "before any Windows header. #undefing min")
#else
#warning: macro min is incompatible with C++.  #undefing min
#endif
#endif
#undef min
#endif

#ifdef max
#if !defined(_LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS)
#if defined(_LIBCPP_WARNING)
_LIBCPP_WARNING("macro max is incompatible with C++.  Try #define NOMINMAX "
                "before any Windows header. #undefing max")
#else
#warning: macro max is incompatible with C++.  #undefing max
#endif
#endif
#undef max
#endif
Add protection from min/max macros llvm-svn: 145407 2011-11-30 00:45:27 +08:00			`// -- C++ --`
[Libc++] Use #pragma push_macro/pop_macro to better handle min/max on Windows Summary: This patch improves how libc++ handles min/max macros within the headers. Previously libc++ would undef them and emit a warning. This patch changes libc++ to use `#pragma push_macro` to save the macro before undefining it, and `#pragma pop_macro` to restore the macros and the end of the header. Reviewers: mclow.lists, bcraig, compnerd, EricWF Reviewed By: EricWF Subscribers: cfe-commits, krytarowski Differential Revision: https://reviews.llvm.org/D33080 llvm-svn: 304357 2017-06-01 06:07:49 +08:00			`//===------------------------ __undef_macros ------------------------------===//`
Add protection from min/max macros llvm-svn: 145407 2011-11-30 00:45:27 +08:00			`//`
Update the file headers across all of the LLVM projects in the monorepo to reflect the new license. 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: 351636 2019-01-19 16:50:56 +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 protection from min/max macros llvm-svn: 145407 2011-11-30 00:45:27 +08:00			`//`
			`//===----------------------------------------------------------------------===//`

[Libc++] Use #pragma push_macro/pop_macro to better handle min/max on Windows Summary: This patch improves how libc++ handles min/max macros within the headers. Previously libc++ would undef them and emit a warning. This patch changes libc++ to use `#pragma push_macro` to save the macro before undefining it, and `#pragma pop_macro` to restore the macros and the end of the header. Reviewers: mclow.lists, bcraig, compnerd, EricWF Reviewed By: EricWF Subscribers: cfe-commits, krytarowski Differential Revision: https://reviews.llvm.org/D33080 llvm-svn: 304357 2017-06-01 06:07:49 +08:00
Add protection from min/max macros llvm-svn: 145407 2011-11-30 00:45:27 +08:00			`#ifdef min`
Add option to disable __deallocate #warning From r229162: Visual Studio's SAL extension uses a macro named __deallocate. This macro is used pervasively Using -Werror when building for Windows can force the use of -Wno-#warnings specifically because of this __deallocate #warning. Instead of forcing builds to disable all #warnings, this option allows libc++ to be built without this particular warning, while leaving other #warnings enabled. Patch by Dave Lee! llvm-svn: 275172 2016-07-12 22:39:13 +08:00			`#if !defined(_LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS)`
Remove usages of _LIBCPP_MSVC which is never defined llvm-svn: 302736 2017-05-11 05:40:58 +08:00			`#if defined(_LIBCPP_WARNING)`
Fix-it suggestion for fixing min or max defines on Windows. llvm-svn: 194891 2013-11-16 07:41:01 +08:00			`_LIBCPP_WARNING("macro min is incompatible with C++. Try #define NOMINMAX "`
			`"before any Windows header. #undefing min")`
G M: Provides the _LIBCPP_WARNING macro, to be used for MSVC only, since that compiler doesn't support #warning. llvm-svn: 191980 2013-10-05 05:14:44 +08:00			`#else`
Some minor mingw64 porting tweaks from Glen. llvm-svn: 163120 2012-09-04 02:13:11 +08:00			`#warning: macro min is incompatible with C++. #undefing min`
G M: Provides the _LIBCPP_WARNING macro, to be used for MSVC only, since that compiler doesn't support #warning. llvm-svn: 191980 2013-10-05 05:14:44 +08:00			`#endif`
Add option to disable __deallocate #warning From r229162: Visual Studio's SAL extension uses a macro named __deallocate. This macro is used pervasively Using -Werror when building for Windows can force the use of -Wno-#warnings specifically because of this __deallocate #warning. Instead of forcing builds to disable all #warnings, this option allows libc++ to be built without this particular warning, while leaving other #warnings enabled. Patch by Dave Lee! llvm-svn: 275172 2016-07-12 22:39:13 +08:00			`#endif`
Add protection from min/max macros llvm-svn: 145407 2011-11-30 00:45:27 +08:00			`#undef min`
			`#endif`

			`#ifdef max`
Add option to disable __deallocate #warning From r229162: Visual Studio's SAL extension uses a macro named __deallocate. This macro is used pervasively Using -Werror when building for Windows can force the use of -Wno-#warnings specifically because of this __deallocate #warning. Instead of forcing builds to disable all #warnings, this option allows libc++ to be built without this particular warning, while leaving other #warnings enabled. Patch by Dave Lee! llvm-svn: 275172 2016-07-12 22:39:13 +08:00			`#if !defined(_LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS)`
Remove usages of _LIBCPP_MSVC which is never defined llvm-svn: 302736 2017-05-11 05:40:58 +08:00			`#if defined(_LIBCPP_WARNING)`
Fix-it suggestion for fixing min or max defines on Windows. llvm-svn: 194891 2013-11-16 07:41:01 +08:00			`_LIBCPP_WARNING("macro max is incompatible with C++. Try #define NOMINMAX "`
			`"before any Windows header. #undefing max")`
G M: Provides the _LIBCPP_WARNING macro, to be used for MSVC only, since that compiler doesn't support #warning. llvm-svn: 191980 2013-10-05 05:14:44 +08:00			`#else`
Some minor mingw64 porting tweaks from Glen. llvm-svn: 163120 2012-09-04 02:13:11 +08:00			`#warning: macro max is incompatible with C++. #undefing max`
G M: Provides the _LIBCPP_WARNING macro, to be used for MSVC only, since that compiler doesn't support #warning. llvm-svn: 191980 2013-10-05 05:14:44 +08:00			`#endif`
Add option to disable __deallocate #warning From r229162: Visual Studio's SAL extension uses a macro named __deallocate. This macro is used pervasively Using -Werror when building for Windows can force the use of -Wno-#warnings specifically because of this __deallocate #warning. Instead of forcing builds to disable all #warnings, this option allows libc++ to be built without this particular warning, while leaving other #warnings enabled. Patch by Dave Lee! llvm-svn: 275172 2016-07-12 22:39:13 +08:00			`#endif`
Add protection from min/max macros llvm-svn: 145407 2011-11-30 00:45:27 +08:00			`#undef max`
			`#endif`