如何解决AccessViolationException
您能否帮助解决下面提到的问题：
以下是代码片段：
托管代码 (VC++) - 包装器代码：
方法 1：
void displayString(std::string abc)
{
std::string xyz=abc;
std::cout<<xyz;
}
方法 2：
void sendData(System::String^ input)
{
char* inputData = (char*)Marshal::StringToHGlobalAnsi(input).ToPointer();
std::string argData = inputData;
displayString(argData); //Working fine
//passing string instance to unmanaged code
/* while execution the below line the system throws: _CrtIsValidHeapPointer(pUserData), _BLOCK_TYPE_IS_VALID(pHead->nBlockUse), HEAP CORRUPTION DETECTED, and finally AccessViolationException */
sendDisplayString(argData); //AccessViolationException
sendDisplayString("Hello"); //AccessViolationException
}
非托管代码 C++ dll：
void sendDisplayString(std::string input)
{
std::cout<<input;
}
注意：在所有提供的链接中搜索，但没有此问题的解决方案。所有链接都会路由到 MSDN 编组页面。
提前致谢。
Could you please help in resolving the below mentioned issue:
Following are the code snippet:
Managed code (VC++) - wrapper code:
Method-1:
void displayString(std::string abc)
{
std::string xyz=abc;
std::cout<<xyz;
}
Method-2:
void sendData(System::String^ input)
{
char* inputData = (char*)Marshal::StringToHGlobalAnsi(input).ToPointer();
std::string argData = inputData;
displayString(argData); //Working fine
//passing string instance to unmanaged code
/* while execution the below line the system throws: _CrtIsValidHeapPointer(pUserData), _BLOCK_TYPE_IS_VALID(pHead->nBlockUse), HEAP CORRUPTION DETECTED, and finally AccessViolationException */
sendDisplayString(argData); //AccessViolationException
sendDisplayString("Hello"); //AccessViolationException
}
unmanaged code C++ dll:
void sendDisplayString(std::string input)
{
std::cout<<input;
}
Note: Searched in all provided link but there is no resolution for this issue. All the links route to MSDN marshalling page.
Thanks in advance.
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我想它回答了您的问题：http://support.microsoft.com/kb/172396
I guess it answers your question: http://support.microsoft.com/kb/172396