Re: [PATCH 0/6] MR9403: vccorlib140: Implement stringification functions.

[Piotr Caban (＠piotr)]

Piotr Caban (@piotr) commented about dlls/vccorlib140/vccorlib.c:
> {
> - FIXME("(%p, %d): stub!\n", obj, try_stringable);
> - return NULL;
> - IInspectable *inspectable;
> - IPropertyValue *propval;
> - IStringable *stringable;
> - HSTRING val = NULL;
> - HRESULT hr = S_OK;
> -
> - TRACE("(%p, %d)\n", obj, try_stringable);
> -
> - if (!obj) return NULL;
> - /* If try_stringable is true, native will first query for IStringable, and then IPrintable (which is just an alias
> -
> * for IStringable). */
> - if (try_stringable && (SUCCEEDED(IUnknown_QueryInterface(obj, &IID_IStringable, (void **)&stringable)) ||
> -
>                       SUCCEEDED(IUnknown_QueryInterface(obj, &IID_IPrintable, (void **)&stringable))))

Did you check what happens if QueryInterface succeeds and sets stringable to NULL?