From 22ca1336dcfb663d86a6892dbe1e48eee20bb6db Mon Sep 17 00:00:00 2001 From: dim Date: Wed, 5 Mar 2014 19:30:36 +0000 Subject: MFC r261283: Import libc++ 3.4 release. This contains a lot of bugfixes, and some preliminary support for C++1y. MFC r261604: HEAD is not buildable for the past day. Commit a 'quick fix' in order to permit buildworld to complete. Reviewed by: theraven MFC r261608: Apply a cleaner solution for the sign warnings that can occur when compiling libc++'s header with -Wsystem-headers on. This has also been submitted upstream. Reported by: asomers MFC r261801: An ABI incompatibility crept into the libc++ 3.4 import in r261283. It was caused by upstream libc++ commit r194536, which aimed to make the headers more standards-compliant, by making std::pair's copy constructor trivial. Unfortunately, this could cause certain C++ applications using shared libraries built against the previous version of libc++ to crash. Fix the ABI incompatibility by making std::pair's copy constructor non-trivial again. Please note: Any C++ applications or shared libraries built with libc++ between r261283 and this revision should be recompiled. Reported by: stefanf --- contrib/libc++/include/ios | 67 +++++++++++++++++++++++++++++++++++----------- 1 file changed, 51 insertions(+), 16 deletions(-) (limited to 'contrib/libc++/include/ios') diff --git a/contrib/libc++/include/ios b/contrib/libc++/include/ios index 25bbfc0..d95f18a 100644 --- a/contrib/libc++/include/ios +++ b/contrib/libc++/include/ios @@ -203,9 +203,9 @@ enum class io_errc }; concept_map ErrorCodeEnum { }; -error_code make_error_code(io_errc e); -error_condition make_error_condition(io_errc e); -storage-class-specifier const error_category& iostream_category; +error_code make_error_code(io_errc e) noexcept; +error_condition make_error_condition(io_errc e) noexcept; +storage-class-specifier const error_category& iostream_category() noexcept; } // std @@ -216,6 +216,10 @@ storage-class-specifier const error_category& iostream_category; #include <__locale> #include +#if __has_feature(cxx_atomic) +#include // for __xindex_ +#endif + #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) #pragma GCC system_header #endif @@ -319,7 +323,7 @@ public: _LIBCPP_INLINE_VISIBILITY bool bad() const; _LIBCPP_INLINE_VISIBILITY iostate exceptions() const; - _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __except); + _LIBCPP_INLINE_VISIBILITY void exceptions(iostate __iostate); void __set_badbit_and_consider_rethrow(); void __set_failbit_and_consider_rethrow(); @@ -363,7 +367,11 @@ private: int* __index_; size_t __event_size_; size_t __event_cap_; +#if __has_feature(cxx_atomic) + static atomic __xindex_; +#else static int __xindex_; +#endif long* __iarray_; size_t __iarray_size_; size_t __iarray_cap_; @@ -380,26 +388,26 @@ _LIBCPP_DECLARE_STRONG_ENUM(io_errc) _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc) template <> -struct _LIBCPP_TYPE_VIS is_error_code_enum : public true_type { }; +struct _LIBCPP_TYPE_VIS_ONLY is_error_code_enum : public true_type { }; #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS template <> -struct _LIBCPP_TYPE_VIS is_error_code_enum : public true_type { }; +struct _LIBCPP_TYPE_VIS_ONLY is_error_code_enum : public true_type { }; #endif _LIBCPP_FUNC_VIS -const error_category& iostream_category(); +const error_category& iostream_category() _NOEXCEPT; inline _LIBCPP_INLINE_VISIBILITY error_code -make_error_code(io_errc __e) +make_error_code(io_errc __e) _NOEXCEPT { return error_code(static_cast(__e), iostream_category()); } inline _LIBCPP_INLINE_VISIBILITY error_condition -make_error_condition(io_errc __e) +make_error_condition(io_errc __e) _NOEXCEPT { return error_condition(static_cast(__e), iostream_category()); } @@ -527,21 +535,21 @@ inline _LIBCPP_INLINE_VISIBILITY bool ios_base::eof() const { - return __rdstate_ & eofbit; + return (__rdstate_ & eofbit) != 0; } inline _LIBCPP_INLINE_VISIBILITY bool ios_base::fail() const { - return __rdstate_ & (failbit | badbit); + return (__rdstate_ & (failbit | badbit)) != 0; } inline _LIBCPP_INLINE_VISIBILITY bool ios_base::bad() const { - return __rdstate_ & badbit; + return (__rdstate_ & badbit) != 0; } inline _LIBCPP_INLINE_VISIBILITY @@ -553,14 +561,14 @@ ios_base::exceptions() const inline _LIBCPP_INLINE_VISIBILITY void -ios_base::exceptions(iostate __except) +ios_base::exceptions(iostate __iostate) { - __exceptions_ = __except; + __exceptions_ = __iostate; clear(__rdstate_); } template -class _LIBCPP_TYPE_VIS basic_ios +class _LIBCPP_TYPE_VIS_ONLY basic_ios : public ios_base { public: @@ -585,7 +593,7 @@ public: _LIBCPP_ALWAYS_INLINE bool bad() const {return ios_base::bad();} _LIBCPP_ALWAYS_INLINE iostate exceptions() const {return ios_base::exceptions();} - _LIBCPP_ALWAYS_INLINE void exceptions(iostate __except) {ios_base::exceptions(__except);} + _LIBCPP_ALWAYS_INLINE void exceptions(iostate __iostate) {ios_base::exceptions(__iostate);} // 27.5.4.1 Constructor/destructor: _LIBCPP_INLINE_VISIBILITY @@ -983,6 +991,33 @@ defaultfloat(ios_base& __str) return __str; } +template +class __save_flags +{ + typedef basic_ios<_CharT, _Traits> __stream_type; + typedef typename __stream_type::fmtflags fmtflags; + + __stream_type& __stream_; + fmtflags __fmtflags_; + _CharT __fill_; + + __save_flags(const __save_flags&); + __save_flags& operator=(const __save_flags&); +public: + _LIBCPP_INLINE_VISIBILITY + explicit __save_flags(__stream_type& __stream) + : __stream_(__stream), + __fmtflags_(__stream.flags()), + __fill_(__stream.fill()) + {} + _LIBCPP_INLINE_VISIBILITY + ~__save_flags() + { + __stream_.flags(__fmtflags_); + __stream_.fill(__fill_); + } +}; + _LIBCPP_END_NAMESPACE_STD #endif // _LIBCPP_IOS -- cgit v1.1