[gambit-list] Segfault while running Gambit; values/receive efficiency

Hi, Well, first of all this segfaults: qp6 napito: ./napito-base.scm Segmentation fault which I guess is a bug. But also, I got a bit carried away trying to remove function calls in matrix multiplication. I'd appreciate some advice - if the code worked, would it be efficient? In particular, do the values/receive pairs get "compiled away"? I hope the code is fairly obvious - I'm trying to unpack a list with contains the non-zero elements from a typical 2D geometric transform and then do the matrix multiplication on a point. Thanks, Andrew