id summary reporter owner description type status priority milestone component version resolution keywords cc difficulty 453 Allow unsigned-integer64 as an FFI return type Moritz Heidkamp felix winkelmann As of 4.6.3, {{{unsigned-integer64}}} is available as an FFI type for function arguments and locations but it is not yet as a return type. I see that this belongs into the {{{foreign-result-conversion}}} procedure in {{{support.scm}}} but I don't really know how exactly the conversion has to be done. enhancement closed minor compiler 4.6.x fixed