When the function is invoked Dll appears stack (STACK) clearance issue -> Fault Module Name: StackHash_0a9e

In a file named test.dll, there is a Max () function definition is:

#ifdef BUILD_DLL
#define DLL_EXPORT __declspec(dllexport) __stdcall
#else
#define DLL_EXPORT __declspec(dllimport) __stdcall
#endif

int DLL_EXPORT Max(int x, int y);

 

When I c in the program, set a pointer type to a function: when int (* func) (int, int)

HMODULE h = LoadLibrary("test.dll");
if(h)
{
    int (*func)(int, int)  =(int (*)(int, int))GetProcAddress(h, "Max");

    printf("max(1,2):%d\n", func(1,2));
}

After calling this function func (1,2), windows not immediately error, when the program exits windows will complain:

 

If the function pointer when defined, plus WINAPI, there is no problem:

#define WINAPI __stdcall

HMODULE h = LoadLibrary("test.dll");
if(h)
{
    int (WINAPI *func)(int, int)  =(int (WINAPI *)(int, int))GetProcAddress(h, "Max");

    printf("max(1,2):%d\n", func(1,2));
}

 

Finally, my guess is that before the code is not added to the reasons WINAPI after the program exits, windows will complain, should be related to the dll in the __stdcall.

It should be involved in  cleanup stack (STACK) in  question.

 

Relevant information:

_cdecl 和_stdcall：https://www.cnblogs.com/52yixin/archive/2011/06/29/2093634.html

_stdcall 与 _cdecl：https://blog.csdn.net/nightwizard2030/article/details/86596635

_stdcall differs _cdecl: https://blog.csdn.net/leehong2005/article/details/8607536

 

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