access violation 0xC0000005 when calling func in dll
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access violation 0xC0000005 when calling func in dll hi,guys: ask for your kind help. thanks in advance. typedef int (WINAPI * _DLL_FOO)(int, char **, int, char **, LPDCL, LPUSERFUNCTIONS); ...... _DLL_FOO m_PFoo; ...... LoadLibrary successfully。 m_PFoo = (_DLL_FOO)GetProcAddress(m_hDll, "Foo"); //successfully 326: retval = (*m_PFoo)(infc, infv, exfc, exfv, m_lpDCL, m_lpUserFunctions); 004440D2 mov esi,esp 004440D4 mov eax,dword ptr [ebp-4] 004440D7 mov ecx,dword ptr [eax+0B8h] 004440DD push ecx 004440DE mov edx,dword ptr [ebp-4] 004440E1 mov eax,dword ptr [edx+0BCh] 004440E7 push eax 004440E8 mov ecx,dword ptr [ebp-10h] 004440EB push ecx 004440EC mov edx,dword ptr [ebp-8] 004440EF push edx 004440F0 mov eax,dword ptr [ebp-14h] 004440F3 push eax 004440F4 mov ecx,dword ptr [ebp-0Ch] 004440F7 push ecx 004440F8 mov edx,dword ptr [ebp-4] 004440FB call dword ptr [edx+0B0h] <== here access violation 0xC0000005 00444101 cmp esi,esp 00444103 call __chkesp (00451fa0) 00444108 mov dword ptr [ebp-11Ch],eax 327： when failure edx+0B0h ＝＝ 0x009796b0 009796b0：B0 D4 11 02 CD CD CD CD 38 7B 14 00 78 A4 14 00 00 00 11 02 CD CD CD CD 38 7B 14 00 78 A4 14 00 The address of func m_PFoo is 0x0211D4B0, it's all right. What 's the problem with my program and how to fix it ? Thank you very much !
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access violation 0xC0000005 when calling func in dll hi,guys: ask for your kind help. thanks in advance. typedef int (WINAPI * _DLL_FOO)(int, char **, int, char **, LPDCL, LPUSERFUNCTIONS); ...... _DLL_FOO m_PFoo; ...... LoadLibrary successfully。 m_PFoo = (_DLL_FOO)GetProcAddress(m_hDll, "Foo"); //successfully 326: retval = (*m_PFoo)(infc, infv, exfc, exfv, m_lpDCL, m_lpUserFunctions); 004440D2 mov esi,esp 004440D4 mov eax,dword ptr [ebp-4] 004440D7 mov ecx,dword ptr [eax+0B8h] 004440DD push ecx 004440DE mov edx,dword ptr [ebp-4] 004440E1 mov eax,dword ptr [edx+0BCh] 004440E7 push eax 004440E8 mov ecx,dword ptr [ebp-10h] 004440EB push ecx 004440EC mov edx,dword ptr [ebp-8] 004440EF push edx 004440F0 mov eax,dword ptr [ebp-14h] 004440F3 push eax 004440F4 mov ecx,dword ptr [ebp-0Ch] 004440F7 push ecx 004440F8 mov edx,dword ptr [ebp-4] 004440FB call dword ptr [edx+0B0h] <== here access violation 0xC0000005 00444101 cmp esi,esp 00444103 call __chkesp (00451fa0) 00444108 mov dword ptr [ebp-11Ch],eax 327： when failure edx+0B0h ＝＝ 0x009796b0 009796b0：B0 D4 11 02 CD CD CD CD 38 7B 14 00 78 A4 14 00 00 00 11 02 CD CD CD CD 38 7B 14 00 78 A4 14 00 The address of func m_PFoo is 0x0211D4B0, it's all right. What 's the problem with my program and how to fix it ? Thank you very much !
I don't think you need that pointer to call the function since it's already a pointer, so 326 becomes:
retval = (m_PFoo)(infc, infv, exfc, exfv, m_lpDCL, m_lpUserFunctions);Ian Mariano - http://www.ian-space.com/
"We are all wave equations in the information matrix of the universe" - me