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54557f062e
Both Window and XSyncCounter are XIDs which on 64 bit X clients are 8 bytes wide. But the values on the wire are 32 bit so, for these types, we always copy 4 bytes into results->prop. As such copying them out with a cast such as *(Window *) means that we are actually reading 8 bytes which depending on whether the higher addressed 4 bytes are zero means that sometimes this works while others it gives us a bogus value. https://bugzilla.gnome.org/show_bug.cgi?id=756074