Function InvokeOSLGetErrDescUPP 

pub unsafe extern "C-unwind" fn InvokeOSLGetErrDescUPP(
    app_desc_ptr: *mut *mut AEDesc,
    user_upp: OSLGetErrDescUPP,
) -> i16

Available on crate features AEDataModel and AEObjects only.

Safety

• app_desc_ptr must be a valid pointer.
• user_upp must be implemented correctly.