This was resolved in this commit trio: https://github.com/rakudo/rakudo/commit/22f00cd72deaaaafbaeb1ad83187309854e33739 https://github.com/perl6/nqp/commit/b083e3471a25bf376fa89b5ec53969b870eb6ac2 https://github.com/MoarVM/MoarVM/commit/1288e7edde60b8c88afb85029dc089092db80168
｢testneeded｣ On 2017-02-03 15:04:00, timo wrote: > There's a github issue that relates to this. Applying this change to > our tommath makes expmod(42, -1, 1) terminate successfully. > > https://github.com/libtom/libtommath/issues/67
