dinput/tests: Check IDirectInputDevice2AImpl_GetObjectInfo error codes.

dlls/dinput/device.c

@@ -1457,9 +1457,9 @@ HRESULT WINAPI IDirectInputDevice2AImpl_GetObjectInfo(
     DIDEVICEOBJECTINSTANCEW didoiW;
     HRESULT res;
 
-    if (!pdidoi ||
-        (pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCEA) &&
-         pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCE_DX3A)))
+    if (!pdidoi) return E_POINTER;
+    if (pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCEA) &&
+        pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCE_DX3A))
         return DIERR_INVALIDPARAM;
 
     didoiW.dwSize = sizeof(didoiW);
@@ -1492,9 +1492,9 @@ HRESULT WINAPI IDirectInputDevice2WImpl_GetObjectInfo(
 
     TRACE("(%p) %d(0x%08x) -> %p\n", This, dwHow, dwObj, pdidoi);
 
-    if (!pdidoi ||
-        (pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCEW) &&
-         pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCE_DX3W)))
+    if (!pdidoi) return E_POINTER;
+    if (pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCEW) &&
+        pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCE_DX3W))
         return DIERR_INVALIDPARAM;
 
     switch (dwHow)

dlls/dinput/joystick.c

@@ -580,12 +580,18 @@ HRESULT WINAPI JoystickAGenericImpl_GetObjectInfo(LPDIRECTINPUTDEVICE8A iface,
     JoystickGenericImpl *This = impl_from_IDirectInputDevice8A(iface);
     HRESULT res;
     DIDEVICEOBJECTINSTANCEW didoiW;
-    DWORD dwSize = pdidoi->dwSize;
+    DWORD dwSize;
+
+    if (!pdidoi) return E_POINTER;
+    if (pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCEA) &&
+        pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCE_DX3A))
+        return DIERR_INVALIDPARAM;
 
     didoiW.dwSize = sizeof(didoiW);
     res = JoystickWGenericImpl_GetObjectInfo(IDirectInputDevice8W_from_impl(This), &didoiW, dwObj, dwHow);
     if (res != DI_OK) return res;
 
+    dwSize = pdidoi->dwSize;
     memset(pdidoi, 0, pdidoi->dwSize);
     memcpy(pdidoi, &didoiW, FIELD_OFFSET(DIDEVICEOBJECTINSTANCEW, tszName));
     pdidoi->dwSize = dwSize;

dlls/dinput/mouse.c

@@ -802,12 +802,18 @@ static HRESULT WINAPI SysMouseAImpl_GetObjectInfo(LPDIRECTINPUTDEVICE8A iface,
     SysMouseImpl *This = impl_from_IDirectInputDevice8A(iface);
     HRESULT res;
     DIDEVICEOBJECTINSTANCEW didoiW;
-    DWORD dwSize = pdidoi->dwSize;
+    DWORD dwSize;
+
+    if (!pdidoi) return E_POINTER;
+    if (pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCEA) &&
+        pdidoi->dwSize != sizeof(DIDEVICEOBJECTINSTANCE_DX3A))
+        return DIERR_INVALIDPARAM;
 
     didoiW.dwSize = sizeof(didoiW);
     res = SysMouseWImpl_GetObjectInfo(IDirectInputDevice8W_from_impl(This), &didoiW, dwObj, dwHow);
     if (res != DI_OK) return res;
 
+    dwSize = pdidoi->dwSize;
     memset(pdidoi, 0, pdidoi->dwSize);
     memcpy(pdidoi, &didoiW, FIELD_OFFSET(DIDEVICEOBJECTINSTANCEW, tszName));
     pdidoi->dwSize = dwSize;

dlls/dinput/tests/device.c

@@ -158,6 +158,16 @@ static void test_object_info(IDirectInputDeviceA *device, HWND hwnd)
     hr = IDirectInputDevice_GetDeviceData(device, sizeof(buffer[0]), buffer, &cnt, 0);
     ok(hr == DI_OK, "GetDeviceData() failed: %08x\n", hr);
 
+    hr = IDirectInputDevice_GetObjectInfo(device, NULL, 16, DIPH_BYOFFSET);
+    ok(hr == E_POINTER, "IDirectInputDevice_GetObjectInfo returned %08x, expected %08x\n", hr, E_POINTER);
+
+    obj_info.dwSize = 1;
+    hr = IDirectInputDevice_GetObjectInfo(device, &obj_info, 16, DIPH_BYOFFSET);
+    ok(hr == DIERR_INVALIDPARAM, "IDirectInputDevice_GetObjectInfo returned %08x, expected %08x\n", hr, DIERR_INVALIDPARAM);
+    obj_info.dwSize = 0xdeadbeef;
+    hr = IDirectInputDevice_GetObjectInfo(device, &obj_info, 16, DIPH_BYOFFSET);
+    ok(hr == DIERR_INVALIDPARAM, "IDirectInputDevice_GetObjectInfo returned %08x, expected %08x\n", hr, DIERR_INVALIDPARAM);
+
     /* No need to test devices without axis */
     obj_info.dwSize = sizeof(obj_info);
     hr = IDirectInputDevice_GetObjectInfo(device, &obj_info, 16, DIPH_BYOFFSET);