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f9c9d254cf
This patch fixes test failures that occur on Windows because the tests attempt to generate two distinct temp file names but get the same name both time. The fix for this is to create the first temp file before requesting a second temporary file name. This ensures that the second name will be unique. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302382 91177308-0d34-0410-b5e6-96231b3b80d8
92 lines
2.6 KiB
C++
92 lines
2.6 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_fstream
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// void swap(basic_fstream& rhs);
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#include <fstream>
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#include <utility>
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#include <cassert>
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#include "platform_support.h"
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std::pair<std::string, std::string> get_temp_file_names() {
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std::pair<std::string, std::string> names;
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names.first = get_temp_file_name();
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// Create the file so the next call to `get_temp_file_name()` doesn't
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// return the same file.
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std::FILE *fd1 = std::fopen(names.first.c_str(), "w");
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names.second = get_temp_file_name();
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assert(names.first != names.second);
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std::fclose(fd1);
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std::remove(names.first.c_str());
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return names;
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}
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int main()
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{
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std::pair<std::string, std::string> temp_files = get_temp_file_names();
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std::string& temp1 = temp_files.first;
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std::string& temp2 = temp_files.second;
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assert(temp1 != temp2);
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{
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std::fstream fs1(temp1.c_str(), std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc);
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std::fstream fs2(temp2.c_str(), std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc);
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fs1 << 1 << ' ' << 2;
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fs2 << 2 << ' ' << 1;
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fs1.seekg(0);
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fs1.swap(fs2);
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fs1.seekg(0);
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int i;
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fs1 >> i;
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assert(i == 2);
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fs1 >> i;
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assert(i == 1);
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i = 0;
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fs2 >> i;
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assert(i == 1);
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fs2 >> i;
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assert(i == 2);
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}
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std::remove(temp1.c_str());
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std::remove(temp2.c_str());
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{
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std::wfstream fs1(temp1.c_str(), std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc);
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std::wfstream fs2(temp2.c_str(), std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc);
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fs1 << 1 << ' ' << 2;
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fs2 << 2 << ' ' << 1;
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fs1.seekg(0);
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fs1.swap(fs2);
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fs1.seekg(0);
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int i;
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fs1 >> i;
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assert(i == 2);
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fs1 >> i;
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assert(i == 1);
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i = 0;
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fs2 >> i;
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assert(i == 1);
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fs2 >> i;
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assert(i == 2);
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}
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std::remove(temp1.c_str());
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std::remove(temp2.c_str());
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}
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