saloperie de compilateur

/// Code de base

int a()
{
    printf("aaaaaaaaaaa\n");
    return 1;
}

int _tmain(int argc, _TCHAR* argv[])
{
    try
    {
        MockRepository mocks;
        mocks.ExpectCallFunc(a).Return(2);
        a();
    }
    catch (std::exception &e)
    {
        printf("%s\n", e.what());
    }
    return 0;
}



Dessamblé en debug la partie interessante dans le main
    try
    {
00412641  mov         dword ptr [ebp-4],0
        MockRepository mocks;
00412648  lea         ecx,[mocks]
0041264E  call        HippoMocks::MockRepository::MockRepository (41190Bh)
00412653  mov         dword ptr [ebp-184h],eax
00412659  mov         byte ptr [ebp-4],1
        mocks.ExpectCallFunc(a).Return(2);
0041265D  mov         eax,dword ptr [`wmain'::`2'::__LINE__Var (433004h)]
00412662  add         eax,4
00412665  push        eax
00412666  push        offset string "d:\\ambroise\\d\xe9veloppement\\dll_es"... (42D918h)
0041266B  push        offset string "%d\n" (42D914h)
00412670  mov         ecx,dword ptr [Once+4 (433684h)]
00412676  push        ecx
00412677  mov         edx,dword ptr [Once (433680h)]
0041267D  push        edx
0041267E  push        offset a (4115B9h)
00412683  lea         ecx,[mocks]
00412689  call        HippoMocks::MockRepository::RegisterExpect_<0,int> (41168Bh)
0041268E  mov         dword ptr [ebp-184h],eax
00412694  push        2
00412696  mov         ecx,dword ptr [ebp-184h]
0041269C  call        HippoMocks::TCall<int,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType,HippoMocks::NullType>::Return (4117FDh)
        a();
004126A1  call        a (4115B9h)
    }


La même en release
    try
    {
        MockRepository mocks;
0040240B  lea         eax,[ebp-64h]
0040240E  xor         ebx,ebx
00402410  push        eax
00402411  mov         dword ptr [ebp-4],ebx
00402414  call        HippoMocks::MockRepository::MockRepository (401940h)
00402419  mov         byte ptr [ebp-4],1
        mocks.ExpectCallFunc(a).Return(2);
0040241D  mov         ecx,dword ptr [HippoMocks::base_tuple `RTTI Type Descriptor'+34h (407320h)]
00402423  mov         edx,dword ptr [HippoMocks::base_tuple `RTTI Type Descriptor'+30h (40731Ch)]
00402429  push        ecx
0040242A  push        edx
0040242B  lea         eax,[ebp-64h]
0040242E  push        eax
0040242F  call        HippoMocks::MockRepository::RegisterExpect_<0,int> (403890h)
00402434  push        8
00402436  mov         esi,eax
00402438  call        operator new (403F68h)
0040243D  add         esp,4
00402440  cmp         eax,ebx
00402442  je          main+73h (402453h)
00402444  mov         dword ptr [eax],offset HippoMocks::ReturnValueWrapper<int>::`vftable' (405468h)
0040244A  mov         dword ptr [eax+4],2
00402451  jmp         main+75h (402455h)
00402453  xor         eax,eax
        a();
00402455  push        offset string "aaaaaaaaaaa\n" (4052FCh)
0040245A  mov         dword ptr [esi+4],eax
0040245D  call        dword ptr [__imp__printf (405120h)]
00402463  add         esp,4
    }