簡單的Boost文件系統訪問沖突

Question

我試圖使用boost::filesystem列出當前目錄中的項目，但得到：

Unhandled exception at 0x6B59DF8D (msvcr110.dll) in BoostTest.exe: 0xC0000005: Access violation reading location 0x9BE3B7A1.

這是我的代碼：

#include <iostream>
#include <boost/filesystem.hpp>

using namespace boost::filesystem;

int main() {
    std::cout << "Hello World!\n";
    auto end_it = directory_iterator();
    for(auto it = directory_iterator(current_path()); it != end_it; it++) {
        std::cout << it->path() << std::endl;
    }
    std::cin.get();
    return 0;
}

我剛剛從mingw切換到vs2012，我認為這可能是鏈接錯誤或類似的錯誤。 我正在鏈接這些32位庫：

• boost_filesystem-vc110-mt-1_52.lib

這些文件位於可執行文件的目錄中：

• boost_filesystem-vc110-mt-1_52.dll
• boost_system-vc110-mt-1_52.dll

從此網站下載： http ： //boost.teeks99.com/

並將平台設置為“ Win32”。

這是Visual Studio 2012窗口中的日志：

'BoostTest.exe' (Win32): Loaded 'C:\Users\Ell\Programming\C++\BoostTest\Debug\BoostTest.exe'. Symbols loaded.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ntdll.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\kernel32.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\KernelBase.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Users\Ell\Programming\C++\BoostTest\Debug\boost_filesystem-vc110-mt-1_52.dll'. Module was built without symbols.
'BoostTest.exe' (Win32): Loaded 'C:\Users\Ell\Programming\C++\BoostTest\Debug\boost_system-vc110-mt-1_52.dll'. Module was built without symbols.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcp110.dll'. Symbols loaded.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcr110.dll'. Symbols loaded.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\advapi32.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcrt.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\sechost.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\rpcrt4.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\sspicli.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\cryptbase.dll'. Cannot find or open the PDB file.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcp110d.dll'. Symbols loaded.
'BoostTest.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcr110d.dll'. Symbols loaded.
First-chance exception at 0x6B59DF8D (msvcr110.dll) in BoostTest.exe: 0xC0000005: Access violation reading location 0x9BF7B7A1.
Unhandled exception at 0x6B59DF8D (msvcr110.dll) in BoostTest.exe: 0xC0000005: Access violation reading location 0x9BF7B7A1.
The program '[5292] BoostTest.exe' has exited with code 0 (0x0).

我的平台是帶有Visual Studio 2012 64位編譯器的Windows 7 64位。

我只在linux和mingw上開發過，所以很可能我鏈接不正確或類似的東西-可能是體系結構問題（盡管我印象中32位應用程序使用32位庫）。 任何幫助表示贊賞！

Answer 1

這不是解決您發布的問題的答案，但至少可以（通過確認我構建了您發布的示例並且可以與32位庫一起使用）有所幫助（我希望）：

Hello World! 

"C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\TestOperator\Debug" 
"C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\TestOperator\ReadMe.txt"
"C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\TestOperator\stdafx.cpp" 
"C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\TestOperator\stdafx.h" 
"C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\TestOperator\targetver.h"
 "C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\TestOperator\TestOperator.cpp" 
"C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\TestOperator\TestOperator.vcxproj"
 "C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\TestOperator\TestOperator.vcxproj.filters"

我從上面引用的站點下載了libs（32/64），並且按照This，出現了64位版本的鏈接錯誤。 （我有64位操作系統，編譯器等。）當我與32位版本鏈接時，它們都如上所述正常工作。

您收到的有關PDB文件的警告只是表明這些lib / dll中不提供調試信息的消息-因此，基本上，基本上，您沒有做任何我認為不對的事情。

如果Boost引發異常，則可以使用以下方法獲取更多信息：

#include <boost/exception/diagnostic_information.hpp>

...

catch(...)
{
    std::cerr << "Unhandled exception!" << std::endl <<
    boost::current_exception_diagnostic_information();
    return 0;
}

最后一件事可能是幫助添加

#define BOOST_LIB_DIAGNOSTIC

返回主cpp文件的開頭，然后查看輸出窗口，以確切地了解正在鏈接的庫是什么：

1>  stdafx.cpp
1>  TestOperator.cpp
1>  Linking to lib file: libboost_system-vc110-mt-gd-1_52.lib
1>  Linking to lib file: libboost_filesystem-vc110-mt-gd-1_52.lib
1>  TestOperator.vcxproj -> C:\Users\john\Documents\Visual Studio 2012\Projects\TestOperator\Debug\TestOperator.exe
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========