ole32/pointermoniker: Fix argument handling in RelativePathTo().

dlls/ole32/pointermoniker.c

@@ -368,20 +368,16 @@ static HRESULT WINAPI PointerMonikerImpl_CommonPrefixWith(IMoniker *iface, IMoni
         return MK_E_NOPREFIX;
 }
 
-/******************************************************************************
- *        PointerMoniker_RelativePathTo
- ******************************************************************************/
-static HRESULT WINAPI
-PointerMonikerImpl_RelativePathTo(IMoniker* iface,IMoniker* pmOther, IMoniker** ppmkRelPath)
+static HRESULT WINAPI PointerMonikerImpl_RelativePathTo(IMoniker *iface, IMoniker *other, IMoniker **result)
 {
-    TRACE("(%p,%p,%p)\n",iface,pmOther,ppmkRelPath);
+    TRACE("%p, %p, %p.\n", iface, other, result);
 
-    if (ppmkRelPath==NULL)
-        return E_POINTER;
+    if (!result)
+        return E_INVALIDARG;
 
-    *ppmkRelPath = NULL;
+    *result = NULL;
 
-    return E_NOTIMPL;
+    return other ? E_NOTIMPL : E_INVALIDARG;
 }
 
 /******************************************************************************

dlls/ole32/tests/moniker.c

@@ -3497,7 +3497,7 @@ todo_wine
 
 static void test_pointer_moniker(void)
 {
-    IMoniker *moniker, *moniker2, *prefix, *inverse, *anti, *c;
+    IMoniker *moniker, *moniker2, *moniker3, *prefix, *inverse, *anti, *c;
     struct test_factory factory;
     IEnumMoniker *enummoniker;
     DWORD hash, size;
@@ -3726,6 +3726,23 @@ todo_wine
     IMoniker_Release(moniker2);
     IMoniker_Release(c);
 
+    /* RelativePathTo() */
+    hr = create_moniker_from_desc("I1", &moniker3);
+    ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
+    hr = IMoniker_RelativePathTo(moniker, NULL, NULL);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#x.\n", hr);
+    moniker2 = (void *)0xdeadbeef;
+    hr = IMoniker_RelativePathTo(moniker, NULL, &moniker2);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#x.\n", hr);
+    ok(!moniker2, "Unexpected pointer.\n");
+    hr = IMoniker_RelativePathTo(moniker, moniker3, NULL);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#x.\n", hr);
+    moniker2 = (void *)0xdeadbeef;
+    hr = IMoniker_RelativePathTo(moniker, moniker3, &moniker2);
+    ok(hr == E_NOTIMPL, "Unexpected hr %#x.\n", hr);
+    ok(!moniker2, "Unexpected pointer.\n");
+    IMoniker_Release(moniker3);
+
     IMoniker_Release(moniker);
 }