c - 第一次机会异常 : KernelBase. dll

Question

我正在尝试使用 VS2012 Pro 构建并运行这段程序。

#include "stdafx.h"

int _tmain(int argc, _TCHAR* argv[])
{
    STARTUPINFO si;
    PROCESS_INFORMATION pi;

    //allocate memory
    ZeroMemory(&si, sizeof(si));
    si.cb = sizeof(si);
    ZeroMemory(&pi, sizeof(pi));

    //create child process
    if (!CreateProcess(NULL,    //use command line
             L"mspaint.exe",    //command line
             NULL,    //don't inherit process handle
             NULL,    //don't inherit thread handle
             FALSE,    //disable handle inheritance
             0,        //no creation flags
             NULL,    //use parent's environment block
             NULL,    //use parent's existing directory
             &si,
             &pi))
    {
        fprintf(stderr, "Create Process Failed");
        return -1;
    }
    WaitForSingleObject(pi.hProcess, INFINITE);
    CloseHandle(pi.hProcess);
    CloseHandle(pi.hThread);

    return 0;
}

我收到此错误:

'ConsoleApplication1.exe' (Win32): Loaded 'G:\workspace\VS2012\ConsoleApplication1\Debug\ConsoleApplication1.exe'. Symbols loaded.

'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ntdll.dll'. Cannot find or open the PDB file.

'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\SysWOW64\kernel32.dll'. Cannot find or open the PDB file.

'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\SysWOW64\KernelBase.dll'. Cannot find or open the PDB file.

'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcr110d.dll'. Symbols loaded.

First-chance exception at 0x763919E3 (KernelBase.dll) in ConsoleApplication1.exe: 0xC0000005: Access violation writing location 0x00CB586E.

Unhandled exception at 0x763919E3 (KernelBase.dll) in ConsoleApplication1.exe: 0xC0000005: Access violation writing location 0x00CB586E.

The program '[6992] ConsoleApplication1.exe' has exited with code 0 (0x0).

请注意，我构建它时没有出现任何错误(文件 stdafx.h 包含我需要的所有 header )。

我搜索了这个错误，但找不到任何解决方案，而且这只是一个简单的程序，所以我不明白这里有什么问题:(。

请帮助我。

Answer 1

来自 CreateProcessW 文档，特别是关于第二个参数:

The Unicode version of this function, CreateProcessW, can modify the contents of this string. Therefore, this parameter cannot be a pointer to read-only memory (such as a const variable or a literal string). If this parameter is a constant string, the function may cause an access violation

因此，在回答您的问题时，不要将常量字符串文字作为第二个参数传递给该函数，否则您将得到 AV。