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| author | Eric Fiselier <eric@efcs.ca> | 2017-05-31 22:07:49 +0000 |
|---|---|---|
| committer | Eric Fiselier <eric@efcs.ca> | 2017-05-31 22:07:49 +0000 |
| commit | a016efb1dcda61e606e527b73791fbacf1bc9c86 (patch) | |
| tree | f98a8a9a31a14d8d72c4d549467288b5dce6e594 /libcxx/include/ratio | |
| parent | 0b69e363f65b9207d42213f546a9e2fa55c503be (diff) | |
| download | bcm5719-llvm-a016efb1dcda61e606e527b73791fbacf1bc9c86.tar.gz bcm5719-llvm-a016efb1dcda61e606e527b73791fbacf1bc9c86.zip | |
[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
Diffstat (limited to 'libcxx/include/ratio')
| -rw-r--r-- | libcxx/include/ratio | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libcxx/include/ratio b/libcxx/include/ratio index fa893637d51..27aa0ded32e 100644 --- a/libcxx/include/ratio +++ b/libcxx/include/ratio @@ -83,12 +83,14 @@ typedef ratio<1000000000000000000000000, 1> yotta; // not supported #include <climits> #include <type_traits> -#include <__undef_min_max> - #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) #pragma GCC system_header #endif +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + + _LIBCPP_BEGIN_NAMESPACE_STD // __static_gcd @@ -520,4 +522,6 @@ template <class _R1, class _R2> _LIBCPP_CONSTEXPR bool ratio_greater_equal_v _LIBCPP_END_NAMESPACE_STD +_LIBCPP_POP_MACROS + #endif // _LIBCPP_RATIO |
