forked from OSchip/llvm-project
59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <fstream>
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// template <class charT, class traits = char_traits<charT> >
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// class basic_ofstream
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// void open(const char* s, ios_base::openmode mode = ios_base::out);
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#include <fstream>
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#include <cassert>
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int main()
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{
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char temp[L_tmpnam];
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tmpnam(temp);
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{
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std::ofstream fs;
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assert(!fs.is_open());
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char c = 'a';
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fs << c;
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assert(fs.fail());
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fs.open(temp);
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assert(fs.is_open());
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fs << c;
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}
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{
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std::ifstream fs(temp);
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char c = 0;
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fs >> c;
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assert(c == 'a');
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}
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remove(temp);
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{
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std::wofstream fs;
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assert(!fs.is_open());
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wchar_t c = L'a';
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fs << c;
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assert(fs.fail());
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fs.open(temp);
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assert(fs.is_open());
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fs << c;
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}
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{
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std::wifstream fs(temp);
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wchar_t c = 0;
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fs >> c;
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assert(c == L'a');
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}
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remove(temp);
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}
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