1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14 10 // UNSUPPORTED: libcpp-has-no-filesystem-library 11 12 // Filesystem is supported on Apple platforms starting with macosx10.15. 13 // UNSUPPORTED: with_system_cxx_lib=macosx10.14 14 // UNSUPPORTED: with_system_cxx_lib=macosx10.13 15 // UNSUPPORTED: with_system_cxx_lib=macosx10.12 16 // UNSUPPORTED: with_system_cxx_lib=macosx10.11 17 // UNSUPPORTED: with_system_cxx_lib=macosx10.10 18 // UNSUPPORTED: with_system_cxx_lib=macosx10.9 19 20 // <fstream> 21 22 // plate <class charT, class traits = char_traits<charT> > 23 // class basic_fstream 24 25 // void open(const filesystem::path& s, ios_base::openmode mode = ios_base::in|ios_base::out); 26 27 #include <fstream> 28 #include <filesystem> 29 #include <cassert> 30 #include "test_macros.h" 31 #include "platform_support.h" 32 33 int main(int, char**) { 34 std::filesystem::path p = get_temp_file_name(); 35 { 36 std::fstream stream; 37 assert(!stream.is_open()); 38 stream.open(p, 39 std::ios_base::in | std::ios_base::out | std::ios_base::trunc); 40 assert(stream.is_open()); 41 double x = 0; 42 stream << 3.25; 43 stream.seekg(0); 44 stream >> x; 45 assert(x == 3.25); 46 } 47 std::remove(p.c_str()); 48 { 49 std::wfstream stream; 50 assert(!stream.is_open()); 51 stream.open(p, 52 std::ios_base::in | std::ios_base::out | std::ios_base::trunc); 53 assert(stream.is_open()); 54 double x = 0; 55 stream << 3.25; 56 stream.seekg(0); 57 stream >> x; 58 assert(x == 3.25); 59 } 60 std::remove(p.c_str()); 61 62 return 0; 63 } 64