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llvm-project/libcxx/include/__undef_macros

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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
//
// The LLVM Compiler Infrastructure
//
[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
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
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