Huw Davies (@huw) commented about dlls/uiautomationcore/uia_provider.c:
+ IServiceProvider_Release(sp); + } + + if (SUCCEEDED(hr) && acc2) + return acc2; + + IAccessible_AddRef(acc); + return acc; +} + +/* + * Compare role, state, child count, and location properties of the two + * IAccessibles. If all four are successfully retrieved and are equal, this is + * considered a match. + */ +static BOOL msaa_acc_prop_match(IAccessible *acc, IAccessible *acc2, BOOL *matched) You're essentially returning a tri-state here, split over two `BOOL`s. It might be better to return an `HRESULT` using `S_OK`, `S_FALSE` and something else to signify a hard mismatch. At the very least expand the comment to explain what the two `BOOL`s mean.
-- https://gitlab.winehq.org/wine/wine/-/merge_requests/216#note_1800