| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // XFAIL: with_system_cxx_lib=macosx10.14 |
| // XFAIL: with_system_cxx_lib=macosx10.13 |
| // XFAIL: with_system_cxx_lib=macosx10.12 |
| // XFAIL: with_system_cxx_lib=macosx10.11 |
| // XFAIL: with_system_cxx_lib=macosx10.10 |
| // XFAIL: with_system_cxx_lib=macosx10.9 |
| |
| // <istream> |
| |
| // template <class charT, class traits = char_traits<charT> > |
| // class basic_istream; |
| |
| // basic_istream<charT,traits>& operator>>(basic_streambuf<charT,traits>* sb); |
| |
| #include <istream> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| template <class CharT> |
| class testbuf |
| : public std::basic_streambuf<CharT> |
| { |
| typedef std::basic_streambuf<CharT> base; |
| std::basic_string<CharT> str_; |
| public: |
| testbuf() |
| { |
| } |
| testbuf(const std::basic_string<CharT>& str) |
| : str_(str) |
| { |
| base::setg(const_cast<CharT*>(str_.data()), |
| const_cast<CharT*>(str_.data()), |
| const_cast<CharT*>(str_.data() + str_.size())); |
| } |
| |
| std::basic_string<CharT> str() const |
| {return std::basic_string<CharT>(base::pbase(), base::pptr());} |
| |
| protected: |
| |
| virtual typename base::int_type |
| overflow(typename base::int_type ch = base::traits_type::eof()) |
| { |
| if (ch != base::traits_type::eof()) |
| { |
| std::size_t n = str_.size(); |
| str_.push_back(static_cast<CharT>(ch)); |
| str_.resize(str_.capacity()); |
| base::setp(const_cast<CharT*>(str_.data()), |
| const_cast<CharT*>(str_.data() + str_.size())); |
| base::pbump(static_cast<int>(n+1)); |
| } |
| return ch; |
| } |
| }; |
| |
| int main(int, char**) |
| { |
| { |
| testbuf<char> sb("testing..."); |
| std::istream is(&sb); |
| testbuf<char> sb2; |
| is >> &sb2; |
| assert(sb2.str() == "testing..."); |
| assert(is.gcount() == 10); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| { |
| testbuf<char> sb(" "); |
| std::basic_istream<char> is(&sb); |
| testbuf<char> sb2; |
| is.exceptions(std::istream::eofbit); |
| bool threw = false; |
| try { |
| is >> &sb2; |
| } catch (std::ios_base::failure&) { |
| threw = true; |
| } |
| assert(threw); |
| assert(!is.bad()); |
| assert( is.eof()); |
| assert(!is.fail()); |
| } |
| { |
| testbuf<wchar_t> sb(L" "); |
| std::basic_istream<wchar_t> is(&sb); |
| testbuf<wchar_t> sb2; |
| is.exceptions(std::istream::eofbit); |
| bool threw = false; |
| try { |
| is >> &sb2; |
| } catch (std::ios_base::failure&) { |
| threw = true; |
| } |
| assert(threw); |
| assert(!is.bad()); |
| assert( is.eof()); |
| assert(!is.fail()); |
| } |
| |
| { |
| testbuf<char> sb; |
| std::basic_istream<char> is(&sb); |
| testbuf<char> sb2; |
| is.exceptions(std::istream::failbit); |
| bool threw = false; |
| try { |
| is >> &sb2; |
| } catch (std::ios_base::failure&) { |
| threw = true; |
| } |
| assert(threw); |
| assert(!is.bad()); |
| assert( is.eof()); |
| assert( is.fail()); |
| } |
| { |
| testbuf<wchar_t> sb; |
| std::basic_istream<wchar_t> is(&sb); |
| testbuf<wchar_t> sb2; |
| is.exceptions(std::istream::failbit); |
| bool threw = false; |
| try { |
| is >> &sb2; |
| } catch (std::ios_base::failure&) { |
| threw = true; |
| } |
| assert(threw); |
| assert(!is.bad()); |
| assert( is.eof()); |
| assert( is.fail()); |
| } |
| |
| { |
| testbuf<char> sb; |
| std::basic_istream<char> is(&sb); |
| is.exceptions(std::istream::failbit); |
| bool threw = false; |
| try { |
| is >> static_cast<testbuf<char>*>(0); |
| } catch (std::ios_base::failure&) { |
| threw = true; |
| } |
| assert(threw); |
| assert(!is.bad()); |
| assert(!is.eof()); |
| assert( is.fail()); |
| } |
| { |
| testbuf<wchar_t> sb; |
| std::basic_istream<wchar_t> is(&sb); |
| is.exceptions(std::istream::failbit); |
| bool threw = false; |
| try { |
| is >> static_cast<testbuf<wchar_t>*>(0); |
| } catch (std::ios_base::failure&) { |
| threw = true; |
| } |
| assert(threw); |
| assert(!is.bad()); |
| assert(!is.eof()); |
| assert( is.fail()); |
| } |
| #endif |
| |
| return 0; |
| } |