head 1.1; branch 1.1.1; access; symbols netbsd-11-0-RC5:1.1.1.2 netbsd-11-0-RC4:1.1.1.2 netbsd-11-0-RC3:1.1.1.2 netbsd-11-0-RC2:1.1.1.2 netbsd-11-0-RC1:1.1.1.2 gcc-14-3-0:1.1.1.3 perseant-exfatfs-base-20250801:1.1.1.2 netbsd-11:1.1.1.2.0.2 netbsd-11-base:1.1.1.2 gcc-12-5-0:1.1.1.2 perseant-exfatfs-base-20240630:1.1.1.2 gcc-12-4-0:1.1.1.2 perseant-exfatfs:1.1.1.1.0.2 perseant-exfatfs-base:1.1.1.1 gcc-12-3-0:1.1.1.1 FSF:1.1.1; locks; strict; comment @# @; 1.1 date 2023.07.30.05.21.20; author mrg; state Exp; branches 1.1.1.1; next ; commitid tk6nV4mbc9nVEMyE; 1.1.1.1 date 2023.07.30.05.21.20; author mrg; state Exp; branches 1.1.1.1.2.1; next 1.1.1.2; commitid tk6nV4mbc9nVEMyE; 1.1.1.2 date 2024.06.30.07.35.40; author mrg; state Exp; branches; next 1.1.1.3; commitid m7BwZsPdfJvuHYfF; 1.1.1.3 date 2025.09.13.23.45.48; author mrg; state Exp; branches; next ; commitid KwhwN4krNWa6XBaG; 1.1.1.1.2.1 date 2024.07.01.01.00.59; author perseant; state Exp; branches; next ; commitid NkoYLLCQWWw9v4gF; desc @@ 1.1 log @Initial revision @ text @// -*- C++ -*- // Copyright (C) 2020-2022 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // . /** @@file include/syncstream * This is a Standard C++ Library header. */ #ifndef _GLIBCXX_SYNCSTREAM #define _GLIBCXX_SYNCSTREAM 1 #if __cplusplus > 201703L #include #if _GLIBCXX_USE_CXX11_ABI #define __cpp_lib_syncbuf 201803L #pragma GCC system_header #include #include #include #include #include #include namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION template class basic_syncbuf : public __syncbuf_base<_CharT, _Traits> { public: using char_type = _CharT; using int_type = typename _Traits::int_type; using pos_type = typename _Traits::pos_type; using off_type = typename _Traits::off_type; using traits_type = _Traits; using allocator_type = _Alloc; using streambuf_type = basic_streambuf<_CharT, _Traits>; basic_syncbuf() : basic_syncbuf(nullptr, allocator_type{}) { } explicit basic_syncbuf(streambuf_type* __obuf) : basic_syncbuf(__obuf, allocator_type{}) { } basic_syncbuf(streambuf_type* __obuf, const allocator_type& __alloc) : __syncbuf_base<_CharT, _Traits>(__obuf) , _M_impl(__alloc) , _M_mtx(__obuf) { } basic_syncbuf(basic_syncbuf&& __other) : __syncbuf_base<_CharT, _Traits>(__other._M_wrapped) , _M_impl(std::move(__other._M_impl)) , _M_mtx(std::move(__other._M_mtx)) { this->_M_emit_on_sync = __other._M_emit_on_sync; this->_M_needs_sync = __other._M_needs_sync; __other._M_wrapped = nullptr; } ~basic_syncbuf() { __try { emit(); } __catch (...) { } } basic_syncbuf& operator=(basic_syncbuf&& __other) { emit(); _M_impl = std::move(__other._M_impl); this->_M_emit_on_sync = __other._M_emit_on_sync; this->_M_needs_sync = __other._M_needs_sync; this->_M_wrapped = __other._M_wrapped; __other._M_wrapped = nullptr; _M_mtx = std::move(__other._M_mtx); return *this; } void swap(basic_syncbuf& __other) { using _ATr = allocator_traits<_Alloc>; if constexpr (!_ATr::propagate_on_container_swap::value) __glibcxx_assert(get_allocator() == __other.get_allocator()); std::swap(_M_impl, __other._M_impl); std::swap(this->_M_emit_on_sync, __other._M_emit_on_sync); std::swap(this->_M_needs_sync, __other._M_needs_sync); std::swap(this->_M_wrapped, __other._M_wrapped); std::swap(_M_mtx, __other._M_mtx); } bool emit() { if (!this->_M_wrapped) return false; auto __s = std::move(_M_impl).str(); const lock_guard<__mutex> __l(_M_mtx); if (auto __size = __s.size()) { auto __n = this->_M_wrapped->sputn(__s.data(), __size); if (__n != __size) { __s.erase(0, __n); _M_impl.str(std::move(__s)); return false; } } if (this->_M_needs_sync) { this->_M_needs_sync = false; if (this->_M_wrapped->pubsync() != 0) return false; } return true; } streambuf_type* get_wrapped() const noexcept { return this->_M_wrapped; } allocator_type get_allocator() const noexcept { return _M_impl.get_allocator(); } void set_emit_on_sync(bool __b) noexcept { this->_M_emit_on_sync = __b; } protected: int sync() override { this->_M_needs_sync = true; if (this->_M_emit_on_sync && !emit()) return -1; return 0; } int_type overflow(int_type __c) override { int_type __eof = traits_type::eof(); if (__builtin_expect(!traits_type::eq_int_type(__c, __eof), true)) return _M_impl.sputc(__c); return __eof; } streamsize xsputn(const char_type* __s, streamsize __n) override { return _M_impl.sputn(__s, __n); } private: basic_stringbuf _M_impl; struct __mutex { #if _GLIBCXX_HAS_GTHREADS mutex* _M_mtx; __mutex(void* __t) : _M_mtx(__t ? &_S_get_mutex(__t) : nullptr) { } void swap(__mutex& __other) noexcept { std::swap(_M_mtx, __other._M_mtx); } void lock() { _M_mtx->lock(); } void unlock() { _M_mtx->unlock(); } // FIXME: This should be put in the .so static mutex& _S_get_mutex(void* __t) { const unsigned char __mask = 0xf; static mutex __m[__mask + 1]; auto __key = _Hash_impl::hash(__t) & __mask; return __m[__key]; } #else __mutex(void*) { } void swap(__mutex&&) noexcept { } void lock() { } void unlock() { } #endif __mutex(__mutex&&) = default; __mutex& operator=(__mutex&&) = default; }; __mutex _M_mtx; }; template class basic_osyncstream : public basic_ostream<_CharT, _Traits> { using __ostream_type = basic_ostream<_CharT, _Traits>; public: // Types: using char_type = _CharT; using traits_type = _Traits; using allocator_type = _Alloc; using int_type = typename traits_type::int_type; using pos_type = typename traits_type::pos_type; using off_type = typename traits_type::off_type; using syncbuf_type = basic_syncbuf<_CharT, _Traits, _Alloc>; using streambuf_type = typename syncbuf_type::streambuf_type; private: syncbuf_type _M_syncbuf; public: basic_osyncstream(streambuf_type* __buf, const allocator_type& __a) : _M_syncbuf(__buf, __a) { this->init(std::__addressof(_M_syncbuf)); } explicit basic_osyncstream(streambuf_type* __buf) : _M_syncbuf(__buf) { this->init(std::__addressof(_M_syncbuf)); } basic_osyncstream(basic_ostream& __os, const allocator_type& __a) : basic_osyncstream(__os.rdbuf(), __a) { this->init(std::__addressof(_M_syncbuf)); } explicit basic_osyncstream(basic_ostream& __os) : basic_osyncstream(__os.rdbuf()) { this->init(std::__addressof(_M_syncbuf)); } basic_osyncstream(basic_osyncstream&& __rhs) noexcept : __ostream_type(std::move(__rhs)), _M_syncbuf(std::move(__rhs._M_syncbuf)) { __ostream_type::set_rdbuf(std::__addressof(_M_syncbuf)); } ~basic_osyncstream() = default; basic_osyncstream& operator=(basic_osyncstream&&) noexcept = default; syncbuf_type* rdbuf() const noexcept { return const_cast(&_M_syncbuf); } streambuf_type* get_wrapped() const noexcept { return _M_syncbuf.get_wrapped(); } void emit() { if (!_M_syncbuf.emit()) this->setstate(ios_base::failbit); } }; template inline void swap(basic_syncbuf<_CharT, _Traits, _Allocator>& __x, basic_syncbuf<_CharT, _Traits, _Allocator>& __y) noexcept { __x.swap(__y); } using syncbuf = basic_syncbuf; using wsyncbuf = basic_syncbuf; using osyncstream = basic_osyncstream; using wosyncstream = basic_osyncstream; _GLIBCXX_END_NAMESPACE_VERSION } // namespace std #endif // _GLIBCXX_USE_CXX11_ABI #endif // C++2a #endif /* _GLIBCXX_SYNCSTREAM */ @ 1.1.1.1 log @initial import of GCC 12.3.0. major changes in GCC 11 included: - The default mode for C++ is now -std=gnu++17 instead of -std=gnu++14. - When building GCC itself, the host compiler must now support C++11, rather than C++98. - Some short options of the gcov tool have been renamed: -i to -j and -j to -H. - ThreadSanitizer improvements. - Introduce Hardware-assisted AddressSanitizer support. - For targets that produce DWARF debugging information GCC now defaults to DWARF version 5. This can produce up to 25% more compact debug information compared to earlier versions. - Many optimisations. - The existing malloc attribute has been extended so that it can be used to identify allocator/deallocator API pairs. A pair of new -Wmismatched-dealloc and -Wmismatched-new-delete warnings are added. - Other new warnings: -Wsizeof-array-div, enabled by -Wall, warns about divisions of two sizeof operators when the first one is applied to an array and the divisor does not equal the size of the array element. -Wstringop-overread, enabled by default, warns about calls to string functions reading past the end of the arrays passed to them as arguments. -Wtsan, enabled by default, warns about unsupported features in ThreadSanitizer (currently std::atomic_thread_fence). - Enchanced warnings: -Wfree-nonheap-object detects many more instances of calls to deallocation functions with pointers not returned from a dynamic memory allocation function. -Wmaybe-uninitialized diagnoses passing pointers or references to uninitialized memory to functions taking const-qualified arguments. -Wuninitialized detects reads from uninitialized dynamically allocated memory. -Warray-parameter warns about functions with inconsistent array forms. -Wvla-parameter warns about functions with inconsistent VLA forms. - Several new features from the upcoming C2X revision of the ISO C standard are supported with -std=c2x and -std=gnu2x. - Several C++20 features have been implemented. - The C++ front end has experimental support for some of the upcoming C++23 draft. - Several new C++ warnings. - Enhanced Arm, AArch64, x86, and RISC-V CPU support. - The implementation of how program state is tracked within -fanalyzer has been completely rewritten with many enhancements. see https://gcc.gnu.org/gcc-11/changes.html for a full list. major changes in GCC 12 include: - An ABI incompatibility between C and C++ when passing or returning by value certain aggregates containing zero width bit-fields has been discovered on various targets. x86-64, ARM and AArch64 will always ignore them (so there is a C ABI incompatibility between GCC 11 and earlier with GCC 12 or later), PowerPC64 ELFv2 always take them into account (so there is a C++ ABI incompatibility, GCC 4.4 and earlier compatible with GCC 12 or later, incompatible with GCC 4.5 through GCC 11). RISC-V has changed the handling of these already starting with GCC 10. As the ABI requires, MIPS takes them into account handling function return values so there is a C++ ABI incompatibility with GCC 4.5 through 11. - STABS: Support for emitting the STABS debugging format is deprecated and will be removed in the next release. All ports now default to emit DWARF (version 2 or later) debugging info or are obsoleted. - Vectorization is enabled at -O2 which is now equivalent to the original -O2 -ftree-vectorize -fvect-cost-model=very-cheap. - GCC now supports the ShadowCallStack sanitizer. - Support for __builtin_shufflevector compatible with the clang language extension was added. - Support for attribute unavailable was added. - Support for __builtin_dynamic_object_size compatible with the clang language extension was added. - New warnings: -Wbidi-chars warns about potentially misleading UTF-8 bidirectional control characters. -Warray-compare warns about comparisons between two operands of array type. - Some new features from the upcoming C2X revision of the ISO C standard are supported with -std=c2x and -std=gnu2x. - Several C++23 features have been implemented. - Many C++ enhancements across warnings and -f options. see https://gcc.gnu.org/gcc-12/changes.html for a full list. @ text @@ 1.1.1.1.2.1 log @Sync with HEAD. @ text @d287 1 a287 1 basic_osyncstream& operator=(basic_osyncstream&&) = default; @ 1.1.1.2 log @import GCC 12.4.0. this includes at least 85 GCC PRs fixed, 2 C, 17 C++, 16 libstdc++-v3, at least 13 target-specific (x86, arm64, riscv mostly), and at least 24 optimisation PRs. @ text @d287 1 a287 1 basic_osyncstream& operator=(basic_osyncstream&&) = default; @ 1.1.1.3 log @initial import of GCC 14.3.0. major changes in GCC 13: - improved sanitizer - zstd debug info compression - LTO improvements - SARIF based diagnostic support - new warnings: -Wxor-used-as-pow, -Wenum-int-mismatch, -Wself-move, -Wdangling-reference - many new -Wanalyzer* specific warnings - enhanced warnings: -Wpessimizing-move, -Wredundant-move - new attributes to mark file descriptors, c++23 "assume" - several C23 features added - several C++23 features added - many new features for Arm, x86, RISC-V major changes in GCC 14: - more strict C99 or newer support - ia64* marked deprecated (but seemingly still in GCC 15.) - several new hardening features - support for "hardbool", which can have user supplied values of true/false - explicit support for stack scrubbing upon function exit - better auto-vectorisation support - added clang-compatible __has_feature and __has_extension - more C23, including -std=c23 - several C++26 features added - better diagnostics in C++ templates - new warnings: -Wnrvo, Welaborated-enum-base - many new features for Arm, x86, RISC-V - possible ABI breaking change for SPARC64 and small structures with arrays of floats. @ text @d3 1 a3 1 // Copyright (C) 2020-2024 Free Software Foundation, Inc. d32 1 a32 3 #pragma GCC system_header #include // iostreams d35 1 d37 3 a39 2 #define __glibcxx_want_syncbuf #include a40 1 #ifdef __cpp_lib_syncbuf // C++ >= 20 && HOSTED && CXX11ABI d315 2 a316 2 #endif // __cpp_lib_syncbuf @